The magnetic field at the center of the arc is 4 × 10^(-4) T.
To find the answer, we need to know about the magnetic field due to a circular arc.
What's the mathematical expression of magnetic field at the center of a circular arc?According to Biot savert's law, magnetic field at the center of a circular arc is B=(μ₀ I/4π)× (arc/radius²) As arc is given as angle × radius, soB=( μ₀I/4π)×(angle/radius)
What will be the magnetic field at the center of a circular arc, if the arc has current 26.9 A, radius 0.6 cm and angle 0.9 radian?B=(μ₀ I/4π)× (0.9/0.006)
= (10^(-7)× 26.9)× (0.9/0.006)
= 4 × 10^(-4) T
Thus, we can conclude that the magnitude of magnetic field at the center of the circular arc is 4 × 10^(-4) T.
Learn more about the magnetic field of a circular arc here:
brainly.com/question/15259752
#SPJ4
A series combination of a 48.0-mF capacitor and a resistor are connected to a 12-V battery. After one second, the voltage across the capacitor is 10 V. What is the resistance of the resistor
The resistance of the resistor is .
Given:- A series combination of a 48.0-mF capacitor and a resistor are connected to a battery. After one second, the voltage across the capacitor is .
To Find:- We have to find the value of the resistance of the resistor.
By using the concept of the resistance it will be solved.
According to the problem,
The value of the resistance of the resistor is .
#SPJ4
Using the information from the previous problem (A 2kg ball rotates on the end of a 1.4m long string. The ball makes 5 revolutions in 4.4s.), calculate the centripetal force on the ball.
Group of answer choices
A) 140.9N
B) 1.1N
C) 110.4N
D) 5.7N
The centripetal force on the ball is 140.9 N; option A
What is the centripetal force on the ball?The centripetal force on the ball is given by the formula below:
F = mv²/rwhere;
m is massv is linear velocity r is radiusThe linear velocity, v = wr
v = 5 * 2π/4.4 * 1.4 = 9.93 m/s
F = 10² * 2/1.4 = 140.9 N
In conclusion, the centripetal force is derived from the mass, velocity and radius of the path.
Learn more about centripetal force at: https://brainly.com/question/20905151
#SPJ1
What happens when the gravity of a massive star's collapsing core is able to overcome neutron degeneracy pressure
when the gravity of a massive star's collapsing core is able to overcome neutron degeneracy pressure, then The core contracts and becomes black hole.
What is degeneracy pressure:
The degeneracy pressure found in the interior of a white dwarf or neutron star. The degeneracy pressure is greatly needed in the interior of these stars to counteract the pressure due to gravity.Some neutron stars may have a surface layer of highly degenerate matter that is compressed to great density, but still has some protons
Unlike the main body of the neutron star which is Neutronium, matter compressed until it is all neutrons, packed together. Essentially a huge atomic nucleus.
The star cools and all remaining matter is bound by gravitation into a neutron star.
This object is composed primarily of degenerate neutron matter, this star will collapse into a black hole because gravity will overcome the neutron degeneracy pressure.
hence, when the gravity of a massive star's collapsing core is able to overcome neutron degeneracy pressure, The core contracts and becomes a black hole.
Learn more about degeneracy pressure here
https://brainly.com/question/14439838
#SPJ4
A 480 g peregrine falcon reaches a speed of 75 m/s in a vertical dive called a stoop. If we assume that the falcon speeds up under the influence of grav- ity only, what is the minimum height of the dive needed to achieve this speed
The minimum height of the dive needed to achieve the given speed is v = 69 m/s is 242.9 m.
Given information:
The mass of peregrine falcon is, m = 480
The final speed reached by the peregrine falcon in a vertical dive is, v = 69 m/s
It is given that the falcon is diving vertically downward. It can be compared with the same situation as the free-falling object under the effect of gravity only. So, the initial velocity of the falcon will be u = 0 m/s as the motion starts with rest.
The value of the gravitational acceleration of gravity is, g = 9.80 m/s²
Now, using the third equation of motion, the minimum height required for the final speed will be,
v² - u² = 2gh
69² - 0² = 2 × 9.8 × h
h = 242.9m.
Therefore, the minimum height of the dive needed to achieve the given speed is 242.9 m.
Learn more about falcon speeds at
https://brainly.com/question/12449855
#SPJ4
Which arrow represents the substance’s change of state?
Answer:
Its P path describes the change of state i.e from solid to liquid.
What is solid ?
"A solid is that state of matter which has a fixed shape, mass, and volume. It suffers very small changes in volume by changing the temperature. It can not be compressed, e.g. — Sand, Wood, Copper, Ice, etc."
What is liquid ?
"A liquid is a sample of matter that conforms to the shape of a container in which it is held, and which acquires a defined surface in the presence of gravity. The term liquid is also used in reference to the state, or condition, of matter having this property."
If the strength of the earth's electric field is 100 N/CN/C , how does the magnitude of the electric force on the droplet compare to the weight force
Magnitude of electric force = 15 x 10⁻¹⁰ N
Magnitude of weight force = 64.092 x 10⁻⁶ N
Given
Diameter of rain drop = 2.5mm
Radius = 1.25 mm = 1.25 × 10⁻³ m/sec
Drop has a charge = +15pC
15pC = 15×10⁻¹²C
Electric field (E) = 100 N/C
Electric force on the charge
= charge x electric field = qE
= 15 x 10⁻¹² x 100
= 15 x 10⁻¹⁰ N.
This force will act in upward direction as the force on the positive charge will always acts in the direction of the electric field.
Volume of rain droplet(V) = 4/3 π R³
Volume V = 4/3 x 3.14 x ( 1.25 x 10⁻³)³
= 6.54 × 10⁻⁹m³
As Density of water = 1000 kg / m³
Density =Mass/Volume
So, Mass of rain droplet = 1000 x 6.54 x 10⁻⁹ kg
= 6.54 x 10⁻⁶ kg .
Now, Weight(W) = mg
= 6.54 x 10⁻⁶ x 9.8
= 64.092 x 10⁻⁶ N.
As the electric force is 15 × 10⁻¹⁰ N
So, weight force is more than the electric force.
Hence, the magnitude of the electric force on the droplet is less as compare to the weight force.
Learn more about Electric force & weight here https://brainly.com/question/13258339
#SPJ4
Two workers are sliding 440 kg crate across the floor. One worker pushes forward on the crate with a force of 390 N while the other pulls in the same direction with a force of 260 N using a rope connected to the crate. Both forces are horizontal, and the crate slides with a constant speed. What is the crate's coefficient of kinetic friction on the floor
The kinetic coefficient of friction of the crate is 0.1506
Let's assume that both workers are applying positive pressure to the crate. A body cannot change its state of motion whether it is at rest or moves uniformly, according to Newton's First Law (at constant velocity). The magnitude of the friction force must therefore equal the total of the two external forces. The crate's equilibrium equations are as follows:
∑Fₓ = P + T - μ . N = 0
∑[tex]F_{y}[/tex] = N - W = 0
Where:
[tex]P[/tex] - Pushing force, measured in newtons.
[tex]T[/tex] - Tension, measured in newtons.
μ- Coefficient of kinetic friction, dimensionless.
[tex]N[/tex]- Normal force, measured in newtons.
W - Weight of the crate, measured in newtons.
The system of equations is now reduced by algebraic means:
P + T - μ . W = 0
We finally clear the coefficient of kinetic friction and apply the definition of weight :
μ [tex]=\frac{P + T}{m.g}[/tex]
We know that P = 390 N, T = 260 N, m = 440 kg and [tex]g= 9.807 \frac{m}{s^2}[/tex] ;
μ = 0.1506
Therefore, the kinetic coefficient of friction of the crate is 0.1506
Learn more about kinetic friction here:
https://brainly.com/question/19392943
#SPJ4
A boy is leaning into a wall with a horizontal force of 15 N. Which of the following best describes the vector force the wall is applying to the boy?
A
–7.5 N
B
15 N
C
0 N
D
–15 N
The vector force the wall is applying to the boy is -15 N; option D
What is a reaction force?A reaction force is a force which is equal in magnitude but oppositely directed to a force acting in a particular direction.
The reaction force on the boy is equal in magnitude to the weight of the boy but has an opposite direction.
In conclusion, the vector force applied by the wall on the boy is -15 N.
Learn more about reaction force at: https://brainly.com/question/1013858
#SPJ1
calculate the kinetic energy of 200kg object that is moving with a speed 15ms.
Answer:
See below
Explanation:
Kinetic Energy = 1/2 * m * v^2
= 1/2 * 200 * (15)^2 = ________ joules
The kinetic energy of the 200 kg object moving with a speed of 15 m/s is 11250 Joules (J).
Given:
Mass of the object (m) = 200 kg
Speed of the object (v) = 15 m/s
For the kinetic energy (KE) of an object, we use the formula:
KE = (1/2) × m × v²
where:
KE is the kinetic energy,
m is the mass of the object,
v is the speed of the object.
The kinetic energy of the object:
KE = (1/2) × 200 × (15 )²
KE = (1/2) × 200 × 225
KE = 11250
KE = 11250 Joules (J)
Therefore, the kinetic energy of the 200 kg object moving with a speed of 15 m/s is 11250 Joules (J).
To know more about kinetic energy:
https://brainly.com/question/30107920?referrer=searchResults
#SPJ3
To develop a model of blackbody radiation that correctly modeled the behavior of emission intensity versus wavelength, Planck applied quantization of:\
Max Planck utilized the concept of energy quantization in order to develop a model for blackbody radiation that accurately fit experimental results.
Electromagnetic waves emitted by using a blackbody are referred to as blackbody radiation. A blackbody is bodily found out through a small hole within the wall of a hollow space radiator.
The depth of blackbody radiation depends on the wavelength of the emitted radiation and the temperature T of the blackbody.
When the temperature of a black frame increases, it is discovered that the wavelength similar to most electricity changes from 0.26 μm to 0. Thirteen μm Then the ratio of the emissive power of the body at the respective temperature is.
Learn more about Electromagnetic waves here: https://brainly.com/question/25847009
#SPJ4
if a man pulls a box with a forcce of 90N at an angle of 45 degrees then what are x and y components of the force
The x and y components of the force will be 63.6 N and 63.6 N respectively.
What is velocity?The change of distance with respect to time is defined as speed. Speed is a scalar quantity. It is a time-based component. Its unit is m/sec.
The given data in the problem is
Force, F=90 N
Angle,θ = 45°
The force of 90N at an angle of 45 degrees;
The force is resolved in the x and y direction as;
[tex]\rm F_x = 90 cos 45 ^ 0 \\\\ F_x = 63.6 \ N[/tex]
[tex]\rm F_y = 90 sin 45^0 \\\\ F_y =63.6 \ N[/tex]
Hence x and y components of the force will be 63.6 N and 63.6 N respectively.
To learn more about the velocity, refer to the link: https://brainly.com/question/862972.
#SPJ1
Flexible cord sets and power-supply cords shall not be concealed behind building __________________, or run through doorways, windows, or similar openings.
Flexible cord sets and power-supply cords shall not be concealed behind building , structural ceilings, suspended or dropped ceilings, floors or walls, or run through doorways, windows, or similar openings.
Hence Option (b) All of these is correct
Flexible cord and flexible cable usage are now outlined in Section 400.10, while prohibited uses are listed in Section 400.12.
Note 5 under 400.12 now includes a new exclusion for flexible wires and cords (uses not permitted).
Flexible cables, flexible cord sets, and power supply cords are not permitted in areas that are "concealed by walls, floors, or ceilings or positioned above suspended or dropped ceilings," according to Note 5.
The following uses for flexible cables, flexible cord sets, and power supply cords are prohibited as well:
(1) As an alternative to a structure's fixed wiring.
(2) Run-through openings in structural ceilings, floors, suspended ceilings, or dropped ceilings.
(3) When run through windows, doorways, or comparable openings.
(4) If attached to building surfaces.
Hence, Option (b) All of these is correct .
Learn more about Flexible cords here https://brainly.com/question/3950810
#SPJ4
An object has a mass of 20.41 kg and an acceleration of 8.22 m/s2. What is the force acting on the object?
Answer: 167.7702 N (Newtons)
Explanation: I had this type of work, so I hope I am correct.
Answer:
~ 168 N
Explanation:
F = m a
= 20.41 * 8.22 = 167.7702 N
An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring constant of the bow
Answer: An archer pulls her bowstring back 0.400m by exerting a force that increases uniformly from zero to 230N. The equivalent spring constant of the bow will be 575N/m
Explanation: To find the answer, we have to know about the Simple Harmonic Motion.
What is Simple Harmonic Motion?A particle is said to execute simple harmonic motion, if it moves to and fro about mean position under the action of restoring force. The restoring force is directly proportional to its displacement from the mean position and always directed towards the mean position.If x is the displacement from the mean position, and F is the restoring force, then[tex]F[/tex]∝[tex]-x[/tex]
[tex]F=-kx[/tex] where, k is called the spring constant.
How to approach the problem?Given that, an archer pulls her bowstring back 0.400m by exerting a force that increasing from zero to 230N.Here, from the question given, we can write, [tex]x=-0.400m[/tex] and [tex]F=230N[/tex].Thus, our spring constant k will be,[tex]k=-F/x= (230)/ (0.400) =575 N/m.[/tex]
Thus, we can conclude that, the equivalent spring constant of the bow will be 575N/m.
Learn more about the Simple Harmonic Motion here:
https://brainly.com/question/28019840
#SPJ4
Directly detecting an Earth-size planet around one of the nearest stars (besides the Sun) is roughly equivalent to trying to take a picture of a ball point from a pen at a distance of about ________ kilometers.
The ballpoint from a pen at a distance of about 4000 kilometers.
Alpha Centauri is the closest star device. Distance from Earth 4,365 al (forty 000 billion kilometers. The solar (yellow famous person) distance from Earth is 150 000 000 km, the exoplanet distance from Alpha Centauri b (orange famous person) 6 000 000 km.
Shifts in starlight from Proxima Centauri, found over extra than 2 years, screen its 1/3 planet. Astronomers have observed a 3rd planet orbiting Proxima Centauri, the star closest to the solar.
Proxima Centauri, the nearest megastar to our own, remains forty,208,000,000,000 km away. (Or about 268,770 AU.)
Learn more about the nearest stars here https://brainly.com/question/21107590
#SPJ4
hello friends,i need ur help on this,topic of Motion in straight line.
hurryy up please.
and keep answering correctly.
Answer:
V = a * t for uniformly accelerated motion starting at zero speed
V = 4 s * 9.8 m/s^2 = 39.2 m/s
S = V0 t + 1/2 a t^2 = 1/2 a t^2
S = 1/2 * 9.8 m/s^2 * 16 s^2 = 78.4 m
Check:
Average speed = 39.2 / 2 = 19.6 m/s
S = 4 * 19.6 = 78.4 m
A 200-N scaffold is held up by a wire at each end. The scaffold is 18 m long. A 650-N box sits 3.0 m from the left end. What is the tension in each wire
The tension on the left wire 642N and the tension on right wire is 208N
Given that the force of scaffold is 200- N and the length of the scaffold is 18m
We need to find the tension in each wire
Tension Force is the force that is transmitted through a cable, rope, wire or string when it is pulled tight by forces acting from opposite ends
Here
∑ [tex]T_b=0[/tex]
∴ [tex]W_B(15m)+W_S(9m)-T_L(18m) = 0[/tex]
∴ [tex]T_L = \frac{W_B(15m)+W_S (9m)}{18m}\\ T_L = \frac{650(15)+200(9)}{18}\\ T_L = 642 N[/tex]
Hence the tension on the left side is 642N
∑[tex]T_a[/tex] = 0
[tex]T_R(18m)-W_B(3m)-W_S(9m)=0[/tex]
∴[tex]T_R =\frac{W_B(3m)+W_S(9m)}{18m}[/tex]
∴[tex]T_R = \frac{650(3)+200(+9)}{18}\\[/tex]
∴[tex]T_R = 208N[/tex]
Hence the tension on the right side is 208N
Learn more about Tension here
https://brainly.com/question/24994188
#SPJ4
A stone is dropped from the top of a cliff. It hits the ground below after 3.25 s. How high is the cliff
The height of the cliff above the ground is 51.76 m.
Height of the cliffh = vt + ¹/₂gt²
where;
v is initial vertical velocityt is time of motiong is acceleration due to gravityh = 0 + ¹/₂gt²
h = ¹/₂gt²
h = ¹/₂(9.8)(3.25)²
h = 51.76 m
Thus, the height of the cliff above the ground is 51.76 m.
Learn more about height here: https://brainly.com/question/1739912
#SPJ1
After rubbing on the apparatus, your pith pall became negatively charged. What type of charge does the apparaTapus now have
The apparatus must be Positively Charged.
Charge interaction:
As from the charge interaction we came to know that when we rub two objects together then there will be three possibility.1. opposite charge objects attract each other
2. like charge object repel each other
3. neutral object with any charges will attract each other.
These happens due to friction generated on rubbing of object which in reverse create electron and get transfer.So, In the question it said that after rubbing on apparatus pith ball
become negative charge which means it has gained the electron.
Thus, the apparatus must have lose electron and would be
positively charged.
Learn more about pith ball here:
https://brainly.com/question/1131516
#SPJ4
Point charges q1and q2 of +12nc and -12nc,respectively are placed 10.0cm apart.compute the resultant electric field(magnitude field)
The electric field due to charge q1 and q2 at the middle point of the line joining the charges q1 and q2 is 8.64*10^(4) N/C.
Note: You have not given the point where the resultant magnetic field has to be calculated. Most probably it is asked to find the electric field at the middle point of the line joining the point charges.
Electric field: The electric force exerted on a unit charge is called the electric field. Electric field due to a charge is calculated using the formula,
E=kq/r^2
where k is a constant whose value is 9*10^(9) N m^2/ C^(2), q is the charge and r is the distance from the charge to the point where the electric field has to be calculated. In the given case, the electric field has to be calculated at the middle point of the line joining charges q1 and q2.
Calculation of electric field due to charge q1:
Given that q1=+12 nC or q1=+12*10^(-9) C and the distance of the charge q1 from the center d1=10.0/2 cm or d1=5*10^(-2) m, the magnitude of the electric field E1 due to charge q1 is,
E1=kq1 /d1^(2)
E1=9*10^(9)*12*10^(-9) / (5*10^(-2))^2
E1=4.32*10^(4) N/C
The direction of the electric field E1 at the middle point is towards the negative charge.
Calculation of electric field due to charge q2:
Given that q2=-12 nC or q1=-12*10^(-9) C and the distance of the charge q2 from the center d2=10.0/2 cm or d2=5*10^(-2) m, the magnitude of the electric field E2 due to charge q2 is,
E2=kq2 /d2^(2)
E2=9*10^(9)*12*10^(-9) / (5*10^(-2))^2
E2=4.32*10^(4) N/C
The direction of the electric field E2 at the middle point is towards the negative charge.
Total electric field:
The total electric field is given by the addition of the electric field. The direction of the electric field is the same for both charges, hence total electric field E is,
E=E1+E2
E=4.32*10^(4) +4.32*10^(4)
E=8.64*10^(4) N/C
Learn more about electric field,
https://brainly.com/question/9699355
#SPJ4
What is the value of the current intensity that crosses a wire of 10 ohms if the voltage applied to the extremes of the wire is 110 V
11 A is the amount of current that crosses the wire.
According to Ohm's law,
If all other physical parameters and temperatures remain constant, the voltage across a conductor is directly proportional to the current flowing through it.
V ∝ I
V= IR where,
V = Voltage across a conductor
I = Current flowing through the conductor
R= Resistance and also known as constant of proportionality
Given,
Resistance of wire(R) = 10 ohms
Voltage applied(V) = 110V
Current(I) = ?
According to the formula
110V = I × 10Ω
I = 110/10 = 11 A
Hence, current intensity of 11 A crosses a wire of 10 ohms if the voltage applied to the extremes of the wire is 110 V
Learn more about Ohm's law here https://brainly.com/question/14296509
#SPJ4
What do simple machines increase?
O movement
O force
O gravity
O mechanical advantage
Answer:
Mechanical advantage
Explanation:
Machines help us in giving more output than the input incurred so it only increases mechanical advantage, all the other quantities are dependent on the mechanical advantage.
In a given lightning flash, the potential difference between a cloud and the ground is 1.5 times 109 V and the quantity of charge transferred is 23.7 C. What is the decrease in energy of the transferred charge
Answer:
The decrease in energy for a lightning flash, with a potential difference between a cloud and the ground, is [tex]1.5 \times 10^{9}\text{ V}[/tex] and the quantity of charge transferred is 23.7 C is [tex]$3.555 \times 10^{10} \text{ J}$[/tex].
Explanation:
In a lightning flash, the potential difference between a cloud and the ground is [tex]1.5 \times 10^{9}\text{ V}[/tex] and the quantity of charge transferred is 23.7 C.
It is required to determine the decrease in energy of the transferred charge.
It is known that the decrease in energy is calculated by multiplying the potential difference by the quantity of charge. Mathematically it is expressed as:
[tex]\Delta U=q \Delta V[/tex]
In this problem, the value of q is 23.7 C and the value of [tex]\Delta V[/tex] is [tex]1.5 \times 10^{9}\text{ V}[/tex].
Therefore the decrease in energy is:
[tex]$$\begin{aligned}\Delta U&=q \Delta V\\&=23.7\times 1.5 \times 10^{9} \text{ J}\\&=3.555\times 10^{10} \text{ J}\end{aligned}$$[/tex]
To know more about the decrease in energy of a transferred charge, refer to:
https://brainly.com/question/14838517
#SPJ4
Which best describes a possible transfer of energy
A mechanical wave transfers energy through matter.
What is Mechanical wave?A mechanical wave is a wave that is an oscillation of matter and is responsible for the transfer of energy through a medium.
Answer: Like all waves, mechanical waves transport energy. This energy propagates in the same direction as the wave. A wave requires an initial energy input; once this initial energy is added, the wave travels through the medium until all its energy is transferred. In contrast, electromagnetic waves require no medium, but can still travel through one.
A wave is a transmission of a disturbance from one point to another. Wave involves transmission of energy from one point to another through a materials medium.
Mechanical waves vibrate in matter and transfer energy. Explore the production and propagation of mechanical waves and discover the factors that affect mechanical waves including elasticity, tension, temperature, and density
Therefore,
A mechanical wave transfers energy through matter.
A complete question is is given below:
What best describes a possible transfer of energy?
a. A mechanical wave transfers energy through matter.
b. A longitudinal wave transfers energy perpendicular to wave motion.
c. A transverse wave transfers energy parallel to wave motion.
d. A sound wave does not need a medium to transfer energy through.
Learn more about mechanical wave here:
https://brainly.com/question/3101711
#SPJ1
If the red and green balls fall off opposite sides of the table, the green ball will make a louder
sound. why?
select one:
o a. the green ball has more potential energy, meaning it had less kinetic energy.
potential energy equals sound energy.
o b. the green ball has more mass, so it had more kinetic energy. the kinetic energy
transferred to sound energy.
o c. the green ball was moving at a faster rate, and speed of movement determines the
loudness of the sound.
od. the red ball has less potential energy, so the green ball had more potential energy.
as energy transferred from one ball to the other, sound was created.
B. The green ball has more mass, so it had more kinetic energy, the kinetic energy transferred to sound energy.
What is kinetic energy?
This is the energy possessed by a moving object, and it depends on mass and speed of the object.
K.E = 0.5mv²
where;
m is mass of the objectv is the speed of the objectThus, we can conclude that, the green ball has more mass, so it had more kinetic energy, the kinetic energy transferred to sound energy.
Learn more about kinetic energy here: https://brainly.com/question/25959744
#SPJ1
A stack of 1500 bricks covers a ground area of 2.750m by 1.350m.the average mass of bricks is 3.200kg.calculate the total force on the ground
The total force on the ground due to the bricks is 47,040 N.
Total force on the ground
The total force on the ground due to weight of the bricks is calculated as follows;
Fₙ = mg
where;
Fₙ is normal forcem is mass of the brickesg is acceleration due to gravityFₙ = (1500 x 3.2) x 9.8
Fₙ = 47,040 N
Thus, the total force on the ground due to the bricks is 47,040 N.
Learn more about total force here: https://brainly.com/question/14361879
#SPJ1
How can we change direction of light? name this phenomenon. grade 6 please helppp
The direction of the light can be changed by reflection from a reflecting surface and by the refraction of the light through a medium of different refractive index.
What is reflection?
The phenomenon of the light in which the light ray bounces back from the surface on which they fall is called the reflection.
Now when the light ray falls on a surface that is well polished like the mirror, then the light ray changes its direction. So by using the combination of mirrors, the direction of the light ray can be changed.
What is refraction?
Refraction is a phenomenon in which light rays change their path slightly when it is passing through a transparent medium with a different refractive index.
The concave and convex lens uses this property of light. So by using the convex and concave lens, the direction of the light ray can be changed.
Learn more about refraction.
https://brainly.com/question/13088981
#SPJ4
from the same height (and at the same time), one ball is dropped and another ball is fired horizontally. which one will hit the ground first
Both balls will take the same amount of time to hit the ground if they are dropped and fired from the same height.
What is Projectile motion:
It is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity. The object is called a projectile, and its path is called its trajectory.For a ball fired horizontally from same height and time, there is only a vertical acceleration on it towards the ground.
This acceleration is equal to the acceleration due to gravity (g = 9.81 m/s^2).
A ball dropped from the same height will also experience the same vertical acceleration downwards as the horizontal acceleration.
Therefore,
Both balls will take the same amount of time to hit the ground if they are dropped and fired from the same height.
Learn more about Projectile motion here:
https://brainly.com/question/11049671
#SPJ4
How does light travel? (1 Point)
A) "Light can only travel in a vacuum and the speed varies depending on whether the source is moving or stationary"
B) "Light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving"
C) "Light only travels in a medium and light travels when a sound source is stationary"
D) "Light only travels in a vacuum and travels faster when the sound source is moving"
Light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving which is denoted as option B.
What is Light?
This is referred to the portion of the electromagnetic spectrum which is perceived by the human eyes.
It has a constant speed and can travel in an air or vacuum. This theefrore makes it the most appropriate choice ion this scenario.
Read more about Light here https://brainly.com/question/1363382
#SPJ1
When the liquid line is restricted, the supply of refrigerant to the metering device is reduced. What is the effect on suction pressure and superheat
Answer:
The suction pressure decreases and the superheat increases when the liquid line is restricted and the supply of refrigerant to the metering device is reduced.
Explanation:
1. The five components of refrigeration are:
Fluid refrigerantCompressorCondenser coilEvaporator coilExpansion device.The compressor limits the vapor released by the refrigerant. This
causes a rise in pressure (in refrigerant), which then pushes the
vapor into the coils on the outside of the refrigerator.
2. Now when the cooler air meets the warm gas present in the coils, it
gets converted into liquid form.
3. Thus, when the liquid form is at high pressure, the refrigerant then
cools down as it flows through the coils placed in the fridge ( in both
freezing and normal sections).
4. The refrigerant also absorbs the warm air present in the fridge, which
causes it to evaporate and flow back through the compressor and the
cycle repeats in the same form.
Thus, when the liquid line is restricted and the supply of refrigerant to the metering device is reduced it causes a decrease in suction pressure and an increase in superheat.
Learn more about refrigeration here:
https://brainly.com/question/9046279
#SPJ4