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tester [92]
2 years ago
14

Astronaut John's mass is 75 kg. He is floating at rest in the space station holding a 5.0 kg pillow. When his friend Bill enters

the room, John throws the pillow at Bill with a velocity of 25 m/s. Immediately after letting go of the pillow, what is John's velocity?
A.
1.7 m/s towards Bill
B.
1.7 m/s away from Bill
C.
15 m/s towards Bill
D.
15 m/s away from Bill
Physics
1 answer:
Murljashka [212]2 years ago
4 0

Answer:

my name is Deepika Pandey anion I am 9 years old my father name is Dinesh Pandey my name is and my sister name is sister name is a

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a roller coaster moves on a certain section of it's track with an average speed of 13 m/s. how much distance does it cover in 5.
viva [34]
  • Speed=13m/s
  • Time=5.8s

\\ \sf\longmapsto Speed=\dfrac{Distance}{Time}

\\ \sf\longmapsto Distance=Speed\times Time

\\ \sf\longmapsto Distance=13(5.8)

\\ \sf\longmapsto Distance=75.4m

7 0
3 years ago
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Describe and explain how the movement and arrangement of the particles in a block of ice change as the ice melts to form liquid
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Answer:

Ice is water in solid phase, in this phase, the particles are very close together and relatively in fixed positions.

As the temperature starts to increase (thermal energy), also does the kinetic energy of the particles (so we have a change from thermal energy to kinetic energy), so they start to move "more", and the position of the particles starts to be less "fixed". There is a point where the particles have enough energy, and this point is where the phase of the water changes from solid to liquid phase (the fusion point). After this point the water can not hold his shape, and takes the shape of the container where it is.

4 0
3 years ago
A capacitor of capacitance C has charge Q and stored energy is U if the charge is increased to 2Q then energy will be A)4U B)2U
Lubov Fominskaja [6]

Answer:

2u

Explanation:

2u

W = Vq

q = CV

W = V.CV

W = CV²

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V = √(W/C)

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8 0
3 years ago
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Viktor [21]

Answer:

1200 W

Explanation:

Power is given by the ratio between work done and time taken:

P=\frac{W}{t}

where W is the work done and t the time taken.

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5 0
3 years ago
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The mass of an object changes as the distance from the center of gravity changes.
Alchen [17]

Answer:

true

Explanation:

this is the answer to this question

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