You go skydiving in the upper atmosphere and you want to deploy your parachute
when you reach the speed of sound, 343 m/s. How many seconds should you wait after
stepping out of the plane before deploying your chute? Ignore air friction.
Please answer, No links please, i need a real answer!
The table shows the mass and melting point of some substances.
Melting Point of Substances
Mass Melting Point of Tin Melting Point of Lead
(kg)
(°C)
(°C)
1
W
Y
N
232
327
Part 1: What will be the values of W and Y for 1 kg of each substance?
Part 2: Explain your answer for Part 1.
Answer:
W= 116 Y= 163
Explanation:
This is because the cutting the mass in half would make it half of the temp of the mass 1 kg higher.
Answer: W=116 Y=163
Explanation:
We have to divide 2 by 232 and 327
232/2= 116 327/2=163
which form of energy in the circuit lights the bulb.?
Answer:
electric energy.......
Which of the following occurs during the process of a liquid changing to a gas (boiling)?
The temperature increases.
The temperature remains the same.
The temperature decreases.
Answer:
the process that occurs when liquid changes to gas(boiling) is temperature increases
Answer:
The temperature increases
Explanation:
When a substance is converted from liquid state to gaseous state the particles get excited.The excitement raises the temperature of the substanceYou toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.0 m/s.
(a) How much time does it take for the tennis ball to reach its maximum height? (s)
(b) What is the maximum height above the ground that the tennis ball reaches? (m)
(c) When the tennis ball is at a height of 2.4 m above the ground, what is its speed? (m/s)
a). 1.2 s
b). 3.81 m
c) v= 6.8 m/s
d) v= 27.05 m/s
What is speed?Speed is define as the distance per unit time. It is also define as how fast an object is moving.
According to the question:
Height = 1.5 m , speed = 7.0 m/s.
a)By using 1st equation of motion
[tex]V = V_{0} + g*t.\\V = 0 \\V_{0} = 7.0 m/s.g = -9.8 m/s^2\\0 = 7 + (-9.8 m/s^2)*t\\t = 1.2 s[/tex]
b.
[tex]h = 1.5 + V_{0} *t + 0.5g*t^2\\V_{0} = 7.8 m/s\\t = 1.2s , g = -9.8 m/s^2\\h = 3.81 m[/tex]
c.
[tex]V^2 = V_{0} ^2 + 2g*d\\V_{0} = 7.8 m/s\\g= -9.8 m/s^2.\\d= 2.2-1.5 = 0.7 m\\V = 6.8 m/s[/tex]
d.
[tex]V^2 = V_{0} ^2 + 2g*h\\V_{0} = 0\\g = +9.8 m/s^2.\\h = 6.8 m\\V = 27.05 m/s[/tex]
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Why is gravitational force and gravity not the same thing?
Will give 45 points to who ever solves this
Answer:
1)m=230 kg
w= 2254( approximately 2300) newtons
g= 9.8 m/s^2(approximately 10)
2)m= 90.5( approximately 88.7) kg
w= 887 N
g= 9.8 m/s^2(approximately 10)
3) m= 420 kg
w= 4,116 (approximately 4220
g= 9.8 m/s^2(approximately 10)
4) m=15kg
w=55.5N
g=3.7 m/s^2
Explanation:
The wanswers given in brackets is to signify the results of using 10m/s^2 as the gravity if u have any misunderstanding text back
What is the definition of the word equality in your own words?
Answer:
Equality is the state of being equal in rights word and oportunities
Disilicon Trisulfide formula?
Electronic signals can travel very long distances in _______ fibers, due to total internal reflection.
Answer:Optical
Explanation:
The bungee cord has an unstretched length of 20.0 m. The mass of the student is 50.0 kg. The gravitational field strength is 9.8 N/kg.
Answer:
a) g.p.e.=mass × gravitational field strength × height
b) Eᵖ= 50 × 9.8 × 20
9800 (J)
Please guide me for uniform speed
Explanation:
uniform speed is just the consistent ratio of distance to time. it can a
so be thought as the speed of an object that does not change. an example is when a car moves at a speed of 60km/hrs without changing its speed. it keeps on moving at the same speed it started with
hope this becomes helpful
thanks
Calculate the tension on the rope.
A. 57.89 N
B. 32.73 N
C. 69.84 N
D. 12.55 N
Hi there!
[tex]\large\boxed{\text{B. 32.73N}}[/tex]
To calculate the tension, we must calculate the acceleration of the system.
Begin with a summation of forces:
∑F = -M₁gsinФ + T - T + M₂g
Simplify and solve for acceleration: (Tensions cancel out)
[tex]a = \frac{-M_1gsin\theta + T - T + M_2g}{M_1+M_2}[/tex]
Plug in values. Let g = 10 m/s²
[tex]a = \frac{-3(10)(sin30)+8(10)}{3+8} = 5.91 m/s^{2}[/tex]
Now, to find tension, let's sum up the forces acting on ONE block. For simplicity, we can look at the hanging block:
∑F = -T + W
ma = -T + W
Rearrange to solve for T:
T = W - ma
We know the acceleration, so plug in the values:
T = (8)(10) - (8)(5.91) = 32.73 N
Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to____
which aided in the formation of____
1. A.Increase
B. Decrease
C. Remain constant
2. A. Chloroplast
B. Roots
C. Soil
Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to increases which aided in the formation of soil.
What is photosynthesis ?The process in which use of solar energy occur by plants, algae and certain bacteria convert them into chemical energy and starch called as photosynthesis.
Photosynthesis occur in chloroplast of the green plant which has its own DNA, genes and synthesize their own proteins.
photosynthetic Pigments are also involve in this process which is responsible for trapping sunlight present in chlorophyll pigment of chloroplast, like chlorophyll a, b and c.
some of the Bacteria have chlorophyll known as bacteriochlorophyll which can absorb infrared rays, Carotenoids which are yellow, orange or red-coloured pigments that absorb bluish-green light., Xanthophyll, Phycobilins.
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_______is the force that keeps us all stuck to the surface of our planet.
Answer:
gravity
Explanation:
The truck now weighs 147,000 N what is the new mass of the truck
Answer:
14700kg
Explanation:
If you divide it by 10
1) ¿Cuáles son los
beneficios de lograr
niveles aceptables de
aptitud física
relacionada con las
habilidades?
Answer: Controlar el sobrepeso bajas grasa , te pone de buen homor , te da mas energia , Te ayuda mantenerte saludable y combatir enfermedades.
Explain swimming based on one of the laws of motion?
Answer:
Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. Thus, swimmers must stroke downward in the water to stay afloat and propel forward. This movement is equal and opposite to the force the water exerts against the swimmer to stop them from moving.
__________ is the process of sediment being placed in a new location
When sediment is carried away, this process is called ________
please help :
Answer:
deposition and erosion
Answer:
1: Deposition
--
2: Erosion
Explanation:
Hope this helps! <3
Answer it ASAP I need it today
Activity 4: Write the uses of each knife listed below.
1. Vegetable peeler-
2. Fruit and salad knives-
3. Citrus knife-
4. Kitchen knife-
5. Pairing knife-
Answer:
1. Vegetable peeler- >tool used to remove the layers of flesh from vegetables and firm fruits
2. Fruit and salad knives->efficiently cut and slice through vegetables and fruits
3. Citrus knife->Citrus and fruit knives are perfect for cutting, slicing, peeling, chopping, and extracting
4. Kitchen knife->used for cutting meat, dicing vegetables, disjointing some cuts, slicing herbs, and chopping nuts and many more
5. Pairing knife->The small but mighty paring knife is used to cut, chop and slice fruits and vegetables
Explanation:
hope it's helpful to you ☺️
Answer:
1. Vegetable peeler -
A kitchen tool used to remove the layers of flesh from vegetables and firm fruits, such as apples, by peeling off thin narrow shavings..
2. Fruit and salad knives -
Made with a serrated blade, the salad knife can be used safely on non-stick surfaces to cut not only vegetables but a wide variety of foods such as fruits, cakes, bars, and breads. It is also referred to as a lettuce knife..
3. Citrus knife -
Citrus knives are perfect for cutting, slicing, peeling, chopping, and extracting..
4. Kitchen knife -
Knives are used for cutting meat, dicing vegetables, disjointing some cuts, slicing herbs, and chopping nuts, but there are a number of different varieties for separate purposes, including carving, slicing and bread knives for specific ingredients..
5. Paring knife -
Small but mighty paring knife is used to cut, chop and slice fruits and vegetables, but they can also be used for a multitude of other kitchen tasks..
Explanation:
Hope it helps you..
Y-your welcome in advance..
(;ŏ﹏ŏ)(ㆁωㆁ)
1. True or False: Most things in motion are accelerating, few things in real life move at a constant speed.
2. Slowing down is negative acceleration or ____________.
(I need Helpppppp pleaseee)
how can light travel from a source to another location?
Answer:
directly from the source through empty space
when is/was gravitational contraction an important energy generation mechanism for the sun?
Answer: It was important when the Sun was forming from a shrinking interstellar cloud of gas.
Hope this helps!!
This process is thought to have been the main source of energy for the sun in the early stages of its development before nuclear fusion reactions in the sun's core became the dominant source of energy.
What is Gravitational contraction?Gravitational contraction is the process by which a celestial body, such as a star, generates energy through the release of gravitational potential energy as it contracts and becomes denser.
Here,
This process is thought to have been the main source of energy for the sun in the early stages of its development before nuclear fusion reactions in the sun's core became the dominant source of energy.
As the sun contracted and became denser, the temperature and pressure in its core increased, leading to the initiation of nuclear fusion reactions. These reactions transformed hydrogen into helium and released a tremendous amount of energy in the form of light and heat, which has sustained the sun for billions of years.
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Describe in your own words a situation where chemical energy is transformed to potential energy.
Answer:
The potential energy stored in molecules can be converted to chemical energy, which can ultimately be converted to kinetic energy, enabling an organism to move. Eventually, most of energy used by organisms is transformed into heat and dissipated.
Explanation:
un paracadutista di massa 70kg scende per 100m a velocità costante.
quanta energia dissipa la resistenza del mezzo?
Answer:
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Another engineer is running a series of experiments with hydraulic systems. If she doubles the area of the input piston, what happens to the amount of pressure transmitted by the system?
Answer:
The pressure remains the same.
F = P * A the amount of force transmitted would double if only the input area is changed. Pressure is the same at all points in the system.
diamond sparkles in dim light give reason
Answer: As the light moves through the diamond, it is scattered and fractured, creating the sparkle that diamonds are known for. This is the refraction. ... This refraction and dispersion also creates natural light and dark areas in the refracted light, depending on where the light hits along the planes of the diamond
Explanation:
2. What is the mass of an object if it accelerates at 3 m/s2 and has a force of 1 N?
Answer:
hey what is this 2 in between the question
please tell
A current of 0.8 A flows through the motor for 3 minutes. Calculate the total charge in this time.
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The given terms are :
Current = 0.8 Amperes
Time = 3 minutes = 3 × 60 = 180 seconds
we know that,
[tex]current = \dfrac{charge}{time} [/tex]now, let's solve for charge (q) :
[tex]0.8 = \dfrac{q}{180} [/tex][tex]q = 180 \times 0.8[/tex][tex]q = 144 \: [/tex]Total Charge (q) = 144 Coulombs
why do we place window downward and ventilation upward?
Answer:
Doors, Windows & Ventilator is a part of building component which is allow to Air & light move & circulate inward & outward, with in door Human or any other material can be move inside or outside also. here types of doors & windows & ventilation are given with necessity of location, function etc.
Window ventilators are used for ensuring a supply of fresh air from the outside into the interior. They are used in rooms with natural ventilation, mechanical extract ventilation or hybrid ventilation. ... It automatically adjusts the inflow of fresh air depending on the level of relative humidity in the room.
Explanation: