Answer:
N/A
Explanation:
Please word this better.
Answer:4.0
Explanation:
I got it wrong and it said this was the answer
if the mass of the objects stays the same and their distance from eachother decreases, then the force of gravity between the two objects
A steel ball was launched horizontally off a ramp at a height of 1.5m above the ground. How many seconds does it take the projectile to hit the ground?
The time taken for the projectile to hit the the ground from a ramp of height 1.5 m is 0.55 seconds.
What is time?Time can be defined as an ongoing and continuous sequence of events that occur in succession, from past through the present, and to the future.
To calculate the time it takes the projectile to hit the ground, we use the formula below.
Formula:
h = ut+gt²/2.......... Equation 1Where:
h = Height of the rampg = acceleration due to gravityu = Initial velocityt = timeFrom the question,
Given:
h = 1.5 mg = 9.8 m/s²u = 0 m/sSubstitute these values into equation 1 and solve for t.
1.5 = (0×t)+(9.8t²)/21.5×2 = 9.8t²t² = 3/9.8t² = 0.3061t = √0.3061t = 0.55 seconds.Hence, the time taken is 0.55 seconds.
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James has an old kettle with a power rating of 1. 4 kw. He buys a new kettle with a power rating of 2. 0 kw. How does this affect the time it takes to boil a fixed volume of water?.
The old kettle with a power rating of 1.4kw, and the one with a power rating of 2.0kw. With this condition, this will affect the time it takes to boil a fixed volume of water quicker than before.
In electrical engineering and mechanical engineering, the power rating of equipment is the highest power input allowed to flow through particular equipment. According to the particular discipline, the term power may refer to electrical or mechanical power.
How does power rating affect the time it takes to boil a fixed volume of water?
Since, the power rating is higher, logically it has higher power than before. Since it is a fixed volume of water, so the only difference is power rating. With greater power, it will take shorter amount of time to boil the same water by volume.
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how to build slide out table top under existing table height, and is spring loaded to match table height??
Desktop risers or toppers, commonly referred to as standing desk converters, are movable devices that you install on top of your current workstation.
You can choose to stand instead of removing or shifting your current desk thanks to them.They come in a variety of sizes, designs, and price ranges and often have a desktop surface with a separate keyboard tray.
Because they are frequently the least expensive and most straightforward way to start standing, standing desk converters are something you should think about if you want to keep your current workstation.
The appropriate standing desk converter for you will depend on your height, computing setup, available space, and spending limit.
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please help and explain
(a) The time taken for the ball to reach the maximum height is 1 second.
(b) The maximum height reached by the ball is 25 m.
What is the time of motion of the ball?
The time taken for the ball to reach the maximum height is calculated as follows;
h = -16t² + 32t + 9
dh/dt = -32t + 32
dh/dt = v
where;
v is velocityat maximum height, the final velocity, v = 0
0 = -32t + 32
32t = 32
t = 32/32
t = 1 s
The maximum height reached by the ball is calculated as follows;
h = -16t² + 32t + 9
h = -16(1)² + 32(1) + 9
h = 25 m
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Students in a physical science class are measuring the velocity of a model car. Their data is shown in the table.
Based on the data table, what would the acceleration be at 3. 5 seconds?
Based on the data table, the acceleration of this model car at 3. 5 seconds is equal to: D. 10 m/s/s.
How to determine the acceleration at 3.5 seconds?By critically observing the data provided in the data table, we can logically deduce that there exist a proportional relationship between the velocity of this model car (in m/s) and the time taken (in seconds).
Mathematically, a proportional relationship can be represented with the following mathematical expression:
v = kt
Where:
v represents the velocity of this model car (in m/s).t represents the time.k represents the constant of proportionality.Next, we would determine the constant of proportionality (k) as follows:
Constant of proportionality (k) = v/t
Constant of proportionality (k) = 10/1
Constant of proportionality (k) = 10.
For the velocity at time, t = 3.5 seconds, we have the following:
Velocity, v = kt
Velocity, v = 10 × 3.5
Velocity, v = 35 m/s.
Mathematically, the acceleration of a physical object can be calculated by using this formula:
Acceleration = change in velocity/change in time
Substituting the given parameters into the formula, we have;
Acceleration = (35 - 15)/(3.5 - 1.5)
Acceleration = 20/2.0
Acceleration = 10 m/s/s.
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Answer:
10 m/s
Explanation:
which wave has the longer wavelength? calculate the wave- length. which wave has the higher frequency and larger photon energy? calculate these values. which wave has the faster velocity? what type of electromagnetic radiation are illustrated?
Electromagnetic radiation consists of electromagnetic field waves that propagate through space and carry electromagnetic radiation energy. These include X-rays, gamma rays, microwaves, infrared rays, light, and radio waves. In the electromagnetic spectrum, all of these waves are included.
For the wavelength:
Wave A has four crests, thus its wavelength can be calculated as follows:
λ = L/4
Where, λ = wavelength of a wave
L = total length of wave (1.6 × 10⁻³ m)
λ = 1.6 × 10⁻³ /4
λ = 4.1 × 10⁻⁴ m
Wave B has eight crests, thus its wavelength can be calculated as:
λ = L/8
Where, λ = wavelength of the wave
L = total length of wave (1.6 × 10⁻³ m)
λ = 1.6 × 10⁻³/8
λ = 2.0 × 10⁻⁴ m
This, explains that wave A has a higher wavelength.
Also, the wavelength in the range of 10⁻⁴m corresponds to the infrared region.
For the frequency:
ν = c/λ
Where, ν = frequency
c = speed of light (2.99 × 10⁸ m/s)
λ = wavelength
Wave A has a wavelength of 4.1 × 10⁻⁴ m, so the frequency of the photon will be:
ν = 2.99 × 10⁸/4.1 × 10⁻⁴
ν = 7.49 × 10¹¹ s⁻¹
Wave B has a wavelength of 2.0 × 10⁻⁴ m, so the frequency of photon will be:
ν = 2.99 × 10⁸/2.0 × 10⁻⁴
ν = 1.49 × 10¹² s⁻¹
Hence, wave B has a higher frequency.
For photon energy:
E = hν
Where, E = photon energy
h = plank's constant (6.626 × 10⁻³⁴ Js)
ν = frequency
Wave A has a frequency of 7.49 × 10¹¹ s⁻¹:
E = (6.626 × 10⁻³⁴)(7.49 × 10¹¹)
E = 4.96 × 10⁻²³ J
Wave A has a frequency of 1.49 × 10¹² s⁻¹:
E = (6.626 × 10⁻³⁴)(1.49 × 10¹²)
E = 49.93 × 10⁻²² J
Hence, wave B has greater energy.
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The speed of sound in air is 343 meters per second. You see lightning and hear thunder 12 seconds later. a. Is there a proportional relationship between the amount of time that passes and your distance from a lightning strike? Explain. b. Estimate your distance from the lightning strike.
a) there is a proportional relationship between the amount of time and distance from a lightning strike.
b)The distance from the lightning strike is 4,116 meter.
The speed of sound in air = 343 meters per second
Time to see lightning = 12 second.
a)Time and distance are directly proportional to each other.
as we know:
distance = speed x time
distance ∝ speed
distance ∝ time
b)The distance can be calculated as :
Distance = Speed x Time
Distance = 343 x 12
Distance = 4,116 meter.
a) there is a proportional relationship between the amount of time and distance from a lightning strike.
b)The distance from the lightning strike is 4,116 meter.
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How much sound energy does the source emit in one hour if its power output remains constant?.
93.6 joule is the energy if source emit in one hour and its power output remains constant
I= 0.026 W/m^2
t= 3600 sec
power= energy/time
energy=power×time
energy= 0.026×3600
energy=93.6 joule
Energy is the ability to perform work in physics. Different shapes, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc., may be assumed by it. Other instances of energy being transmitted from one body to another include heat and work. Energy is always distributed after it has been transferred in accordance with its type. Thus, heat transfer could result in thermal energy, whereas work could result in mechanical energy.
Motion is a trait shared by all forms of energy. For instance, if a body is moving, it possesses kinetic energy. Due to the object's design, which integrates potential energy, a tensioned object, such a spring or bow, has the ability to move even when at rest.
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A 750 kg car is at rest at a red light. If the light turns green and it zooms away with an acceleration of 7. 8 m/s2 how fast will it be traveling in 7 seconds? express your answer in meters per second.
A 750kg car with an acceleration of 7.8m/s^2 will be as fast as 54.6m/s when it travels for 7 seconds.
It is a rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down.
How to calculate the speed of 750kg car when traveling in 7 seconds?
Vf = Vo + a*t
Vo = initial speed = 0 (the car is at rest at a red light)
Vf = final speed
a = acceleration = 7.8m/s^2
t =time = 7s
Vf = Vo + a*t
Vf = 0 + 7.8 * 7
Vf = 54.6m/s
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two cars travel towards one another. car a travels at a speed of 30 mph to the right (the positive x direction). car b travels at 10 mph to the left. let vab be the velocity of car a as seen by the driver of car b (i.e. the velocity of a relative to b). vba is the the velocity of
-20 mph is the the relative velocity of vba
Va=30 mph
Vb=10 mph
Vab= Vb - Va = 20 mph
Vba=Va - Vb= -20 mph
An object's relative velocity is the speed at which it moves in relation to another object. It serves as a method of determining how swiftly two objects are traveling with respect to one another. Relative velocity is essential to comprehending physics because it helps us grasp how objects move and interact with one another. Relative velocity can be estimated for a variety of interactions. An object's relative velocity is the speed at which it moves in relation to another object. It serves as a method of determining how swiftly two objects are traveling with respect to one another. Relative velocity is essential to comprehending physics because it helps us grasp how objects move and interact with one another.
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How does the observed pitch of the buzzer change as it moves towards the observer?.
The observed frequency increases and ear hears a higher pitch.
The Doppler Effect is the change in wave frequency caused by the relative motion of a wave source and its observer. Christian Johann Doppler discovered it and described it as the process of increasing or decreasing starlight based on the relative movement of the star.
The Doppler effect, also known as the Doppler shift, is a phenomenon that occurs when the source of waves moves in relation to an observer. A common physical demonstration of the Doppler Effect is an ambulance crossing you with its siren blaring. The Doppler effect is important in astronomy because it allows us to calculate the velocity of light-emitting objects in space, such as stars or galaxies.
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AP Physics Help. 13 points!!
There have 3 forces acting on the helicopter.
There have 2 forces acting on the load.
Magnitude of net force = 200 N.
Magnitude of acceleration of the system = 0.0833 m/s².
The speed of the system is increasing.
Given parameters:
Mass of the helicopter, M = 2000 kg
Mass of the load; m = 400 kg
Thrust force; F = 26000 N.
Hence, there have 3 forces acting on the helicopter: weight of the helicopter, weight of the load, and thrust.
There have 2 forces acting on the load: weight of the load and thrust.
Total mass of the system = M +m = 2000 kg + 400 kg = 2400 kg.
Magnitude of net force = Thrust - weight of the system
= F - (M + m)g
= 26000 - (2000 + 400) × 10
= 200 N.
Magnitude of acceleration of the system = Magnitude of net force / Total mass of the system
= 200/2400 m/s².
= 0.0833 m/s².
Hence, the speed of the system is increasing.
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if star a has a core temperature t, and star b has a core temperature 3t, how does the rate of fusion of star a compare to the rate of fusion of star b?
Star b will have better fusion rate as compared to star a.
What is nuclear fusion reaction?
It is the reaction which powers the sun and other stars. In this reaction, two small nuclei fuse together to form one single heavier nucleus. During this process, large amount of heat is being liberated out.
The rate of fusion reaction increases rapidly with temperature until it reaches a point where it maximizes and then falls. Hence, it depends upon the numeric value of temperature taken. The star with temperature 3t will have a good fusion rate as compared to the star a with t temperature. There are many other things as well, which has to be kept in mind and it comes later on in the reaction.
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describe what happens when a star forms. begin with a dense core of material in a molecular cloud and trace the evolution up to the time the newly formed star reaches the main sequence.
In general, collapse causes central heating, which ultimately causes temperatures conducive to hydrogen ignition. Particularly, material from the molecular cloud's outer reaches transforms gravitational potential energy into kinetic energy as it falls inward toward the cloud's core when gravity outweighs pressure.
The material is either added to the central protostar or spun out into the protoplanetary disc when it reaches the centre of the cloud, converting its kinetic energy into thermal energy. As more material is added, the protostar gets hotter and brighter.
When the centre of the object reaches temperatures of 10-15 million K and nuclear fusion starts, its central pressure and temperature likewise rise. Other angular momentum-related processes shape the material surrounding the collapsing core in the interim and regulate the volume of material engaged in the collapse.
what is kinetic energy?
Kinetic energy is a type of energy that is present in every object or particle that is moving. When work, which entails the exchange of electrons, is done on an object by applying a net force, that object acquires kinetic energy.
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A dense core of material in a molecular cloud begins to collapse due to gravity.
What is gravity?
Gravity is indeed a fundamental interaction in physics that causes all objects with mass or energy to attract one another. The electromagnetic force, the weak interaction, and the strong interaction are all significantly stronger than gravity, which is by far the weakest of a four fundamental interactions. As a result, this has no appreciable impact on subatomic particle level phenomena. However, at the macroscopic level, gravity is the most important interaction between objects and governs the movement of planets, stars, galaxies, or even light. The Moon's gravity causes sublunar tides in the oceans, just as gravity on Earth gives weight to physical objects.
As it collapses, it heats up and the central regions become hotter than the surrounding material. This causes the central regions to become more dense and the surrounding material to be expelled. The star continues to collapse and heat up until it reaches the main sequence, where it stabilizes and begins to produce energy through nuclear fusion.
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as more resistors are added in series to a constant voltage source, the power supplied by the source series/parallel circuits: as more resistors are added in series to a constant voltage source, the power supplied by the source decreases. increases. does not change. increases for a time and then starts to decrease.
The work energy of speed is 1304.2.
What is work energy?
Work energy is the most fundamental quantity of physics. Work is said to be done when a force applied to an object cause a displacement of a object.
Solution -
As per the given-
Mass of runner m = 74kg
Initial velocity of runner u=4.8 m/s
Final velocity of runner v =0
Coefficient of friction ¥=0.7
Let's d be the distance moved by runner till the stop.
a- mechanical energy lost due to friction
As friction does negetive work causing the runner to stop.
As we know,
Mechanical energy lost= Kinetic energy of runner
Mechanical energy lost = 1/2 mv^2 = 1/2 ×74×4.8^2=852.2
Distance move by runner- Work done by friction = mechanical energy lost
-¥×mg×d =852.2 j
-0.7×74×9.8×d = -491.2
Solving the equation we get
1304.2.
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A square coil, enclosing an area with sides 6. 4 cm long, is wrapped with 3,038 turns of wire. A uniform magnetic field perpendicular to its plane is turned on and increases to 0. 47 t during an interval of 1. 2 s. What is the magnitude of the induced voltage in the coil?.
The magnitude of the induced voltage in the coil is 0.25 V. The induced emf will be strong enough to counteract the underlying voltage shift.
Lentz's Law states that a coil will create or induce a back emf of V if a voltage of V is applied to it when it is not carrying any current. The same holds true if a coil is already carrying current; the back emf will then adapt to any applicable change in voltage (V) for the same reason. The voltage in inductors can be discontinuous, but the current is always a continuous function of time.
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Radiation dosage is commonly measured in
A) rads.
B) rems.
C) joules.
D) none of the above
Radiation dosage is usually measured in rads.
What is radiation damage?When ionizing radiation enters a human body or object, it stores energy. The energy absorbed by exposure to radiation is called dose. Radiation dose size is expressed in three ways: absorbed, equivalent and effective.
The energy absorbed by the human body after being exposed to radiation is called the absorbed dose. Absorbed dose is measured in units called Grays (Gy). A dose of 1 Gray corresponds to 1 Joule of energy stored in 1 kilogram of matter. Radiation has always been around us. In fact, life evolved in a world containing significant amounts of ionizing radiation. It comes from space, earth, and even from within our own bodies. Natural background radiation doses vary by location and habits.
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A block of mass m is attached to a modified atwood machine and is accelerated upward at 3a by a constant force f0. What is the weight of the block? responses.
The weight of the block is F₀ × g/(g + 3a)
What is the difference between weight and mass?Mass of an object is the same everywhere in the universe. Weight, on the other hand, varies by location. Mass is measured in kilograms. We usually say kilograms for weight, but strictly speaking, it must be measured in Newtons, which is a unit of force. Weight equals mass multiplied by applied gravity. i.e. W = mg
For the given case:
Mass of block = m
Acceleration = 3a
Force = F₀
So, F₀ - mg = m × 3a
F₀ = mg + m3a
F₀ = m(g + 3a)
m = F₀/(g + 3a)
Now, weight = mg
Where, g = 9.8 m/s²
W = F₀/(g + 3a) × g
W = F₀ × g/(g + 3a)
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A charming friend of yours who has been reading a little bit about astronomy accompanies you to the campus observatory and asks to see the kind of star that our sun will ultimately become, long, long after it has turned into a white dwarf. Why is the astronomer on duty going to have a bit of a problem satisfying her request?.
The astronomer on duty going to have a bit of a problem satisfying her request after a white dwarf cools off it turns too bloodless and darkish to emit visible light.
According to astronomers, The fate of the left-over center relies upon its mass. If the left-over middle is about 1. four to 5 instances the mass of our solar, it'll crumble right into a neutron big name. If the middle is bigger, it's going to crumble right into a black hollow.
The growth and contraction of pulsating variables may be measured with the aid of using the Doppler effect. The traces inside the spectrum shift in the direction of the blue because the floor of the megastar moves in the direction of us after which shifts to pink as the floor shrinks again. Gold is uncommon in the course of the Universe as it's a tremendously hefty atom, such as seventy-nine protons and 118 neutrons.
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5) When a ball is rolling halfway down a hill is there still potential energy?
Explanation:
Select the type or types of energy the ball has at the top of the hill.
gravitational potential energy
Select the type or types of energy the ball has halfway down the hill.
gravitational potential energy
rotational kinetic energy
kinetic energy
Select the type or types of energy the ball has on the level ground.
kinetic energy
Cotivational Kinitics Energy
Explanation:
Please write an explanation of the collapsing can experiment. Make sure you draw a diagram and include what is happening with the gas pressure.
(Don't draw it just someone might have the same question).
The crushing can experiment shows the relationship between the gases in a can and the air pressure.
What is the collapsing can experiment?Before we can understand the crushing can experiment, we need to bear at the back of our minds that in the kinetic molecular theory of gases, we are told that gas molecules are in constant random motion and that they collide with the walls of the container.
Now, in the crushing can experiment, we have steam that is held at a high temperature so that the molecules are moving rapidly and exerting pressure on the walls of the container. This pressure that is exerted by the gases in the can counterbalances the air pressure.
If the can is cooled such that the gases are less mobile and exert less pressure, then the air pressure on the can would exceed the pressure exerted by the gases inside the can and the can would squeeze.
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the two main classes of forces are
Forces can be divided into primarily into two types of forces: Contact Forces. Non-contact Forces.
In physics, pressure is an influence that can trade the motion of an item. A force can reason an item with mass to exchange its velocity (e.g. transferring from a country of rest), i.e., to boost up. force can also be described intuitively as a push or a pull. A pressure has each importance and route, making it a vector quantity. it's far measured in the SI unit of newton (N). force is represented by way of the image F (previously P).
The unique form of Newton's 2d law states that the internet force appearing upon an object is equal to the fee at which its momentum changes with time. If the mass of the item is constant, this law means that the acceleration of an item is at once proportional to the net force performing on the item, is in the path of the net force, and is inversely proportional to the mass of the object.
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the visible surface of the sun is composed of solid matter.
a. true
b. false
This statement is FALSE, the visible surface of the sun is composed of solid matter.
The sun is made totally out of plasma, the fourth nation of depending after gasoline, liquid, and strong, and the most energetic. As you could consider, the sun is tremendously hot. It varies among nine,900-27,000,000°F in temperature among the “surface” (the outer limb of its environment where it becomes obvious to light as opposed to opaque), and the middle.
Unlike the gasoline massive planets, which probably have a strong middle, the sun is made nearly out of hydrogen and helium, the lightest of all the elements, and at no point, internal should either of those exist as a solid at the one’s temperatures, despite the awesome pressures that exist in the solar. It’s plasma all the way down, even at the center where the density is ten instances that of gold.
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Give one concrete example of the following concepts in relation to your daily routine at home.
1. Law of Inertia
2. Law of Acceleration
3. Law of Interaction
4. Work and Power
5. PE to KE
6. Sound and Light
7. Heat and Electricity
Answer:
Example for 1. Law of Inertia
Falling forward while getting down from a moving bus:
When a passenger gets down from a moving bus, their upper body is still in motion, and when it comes in contact with the ground which is at rest, their body topples forward due to the inertia of motion.
Example for 2. Law of Acceleration
Hitting a Ball:
A ball develops a certain amount of acceleration after being hit. The acceleration with which the ball moves is directly proportional to the force applied to it. This means that the harder you hit the ball, the faster it will move
Example for 3. Law of Interaction
Walking:
Whenever people walk, their foot exerts a force on the ground. The ground then exerts an equal force which points in the opposite direction. It is this force (force due to friction) that allows the person to move forward.
Example for 4. Work and Power
As P=F.v
Cycling:
A person riding a bicycle possesses some amount of energy. This energy is utilized by the cyclist to do work on the paddles of the bicycle by applying some force and enabling the bicycle to move forward.
Example for 5. PE to KE
An apple hanging on a tree:
It has the potential energy due to its raised position. When the apple falls from the tree. The falling apple has the kinetic energy. Thus the potential energy stored in the apple in its raised position changes into the kinetic energy when the apple is falling. This kinetic energy does work on stone as the apple strikes the stone, and it makes the stone to move into the ground.
Example for 6. Sound and Light
TV:
We see TV takes electrical energy as input and produces. light energy, sound energy.
Example for 7. Heat and Electricity
The electric heaters:
An electric heater is an electrical device that converts an electric current into heat.
consider two identical wind turbines with a hub height of 40 m, one located in flat agricultural land and one located above a forest. what is the ratio of output power for the two turbines if the wind velocity is 10 m/s at a height of 100 m in both cases?
The ratio of output power for the two turbines is:
P₁/P₂ = 8.87³/ 8.34³
P₁ = 1.203 P₂
What is power?Power, the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, which is equivalent to 1 joule per second. Power is a scalar quantity.
Now let's discuss about the mentioned case:
For flat agricultural land:
Given,
Height (h₁) = 100 m
Wind velocity = 10 m/s
Height of wind turbines (h₂) = 40 m
For flat agricultural land let's consider the roughness to be of class 1.
So, f₀ = 0.03 ( coefficient of friction)
∴ v₂ = v₁ × ln (h₂/f₀) / ln (h₁/f₀)
= 10 × ln(40/0.03) / ln(100/0.03)
= 10 × 7.195/8.112
= 8.87 m/s
For forest land:
Given,
Height (h₁) = 100 m
Wind velocity = 10 m/s
Height of wind turbines (h₂) = 40 m
For forest and let's consider the roughness to be of class 3.
So, f₀' = 0.4 ( coefficient of friction)
∴ v₂' = v₁ × ln (h₂/f₀') / ln (h₁/f₀')
= 10 × ln(40/0.4) / ln(100/0.4)
= 10 × 4.605/5.521
= 8.34 m/s
Now, power output (P): ¹/₂ ρAv³C
Where, P = power
ρ = density of air
A = swept area
C = power coefficient
v = wind speed
P₁/P₂ = ¹/₂ ρAv₂'³C / ¹/₂ ρAv₂'³C
P₁/P₂ = 8.87³/ 8.34³
P₁ = 1.203 P₂
P₁ = Power of wind turbine in flat agricultural land
P₂ = Power of wind turbine in forest
Using above explanation we can conclude that the wind turbine in flat agricultural land produces more power than the wind turbine in forest.
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A wavelength of 510nm corresponds to an approximate frequency of 6×1014s−1. What is the approximate energy of one photon of this light?.
The energy emitted by a photon is equal to 7,72 × 10⁻¹⁰ J.
To answer this sola we use the photon energy formula:
E = h(c/λ)
Where:
Wavelength: λ = 510 nm = 5.1 x 10⁻¹⁰ mApproximate frequency: c = 6 × 10¹⁴ Planck'sconstant: h = 6.6 × 10⁻³⁴ JsOnce the values are known, enter them into the formula:
E = h(c/λ)
[tex]E = 6,6 * 10^{-34} \frac{6*10^{14} }{5,1 *10^{-10}}[/tex]
[tex]E = 6,6 * 10^{-34}(1,17 *10^{24})[/tex]
[tex]E = 7,72*10^{-10} J[/tex]
So, we can conclude that the approximate energy of one photon of this light is 7,72 × 10⁻¹⁰ J.
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The Eatern coat of South America and the wetern coat of Africa are eparated by the Atlantic Ocean. If cientit find the ame type of plant foil on the eatern coat of South America and wetern coat of Africa, which of thee would be the bet concluion
It can be concluded that at one time in the past, South America and Africa were once one. Beside of the same type of plant foil on the eastern coast of South America and western coat of Africa, we can identify other similar reason that the coastlines of South America and Africa on opposite sides of the Atlantic Ocean seem to fit together.
Is it true that once upon a time South America and Africa is a continent?Yes, is it. Let's back to 1915, a German scientist named Alfred Wegener, proposed that continents could move around on the earth’s surface. He said that in the past there is a supercontinent in the earth named Pangea Continent. Not only South America and Africa, but also all of the continents were all together in the past.
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which of the following would increase the magnitude of the centripetal force acting on an object traveling in a horizontal, circular path? select two correct answers.
The magnitude of the centripetal force acting on an object traveling in a horizontal, circular path is increases mass, velocity and radius of the path.
centripetal force:
It is a type of force which acting on a object on circular path that keeps the object moving on that path.
Centripetal force is calculated as:
F = 1/2(mv²)
where,
F = centripetal force
m = mass of the object
v = velocity of the object.
From the above relation centripetal force is directly proportional to the mass and velocity and inversely proportional to the radius.
The given question is incomplete. The complete question is
Which of the following would increase the magnitude of the centripetal force acting on an object traveling in a horizontal, circular path?
The magnitude of the centripetal force acting on an object traveling in a horizontal, circular path is increases mass, velocity and radius of the path.
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Complete the equation to show how pyridine, c5h5n , acts as a brønsted-lowry base in water.
The reaction which occurs between water and pyridine is
C5H5H + H2O → C5H5NH+ + OH-
pyridine is a basic heterocyclic organic compound with a structure like benzene with one methine group replaced by a nitrogen
pyridine reacts with water where it may oxidizes water
The following reaction occurs when water is reacted with pyridine is
C5H5H + H2O → C5H5NH+ + OH-
C5H5N + H+ → C5H5NH+
pyridine is a hydrogen ion acceptor as new bonds are formed between nitrogen to form a new compound
Bronsted-Lowry acids, on the other hand, are solutions that act as a proton or hydrogen ion donors
pyridine is the proton acceptor and water is the proton donor as it donates its proton to pyridine. To learn more about bronsted-lowry acids see more https://brainly.com/question/14407412?referrer=searchResults
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