A 5.00 kg ball is traveling at 4.0 m/s and strikes a wall. The ball bounces off the wall with a velocity of 4.0 m/s in the opposite direction. If the contact with the wall by the ball lasts for 0.10 seconds, then the magnitude of the impulse on the ball is

A. 24 kg m/s.
B. 30 kg m/s.
C. 36 kg m/s.
D. 40 kg m/s.
E. 50 kg m/s.


D. 40 kg m/s.

Physics & Space Science

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Many objects in the sky, including the Sun, primarily emit blackbody radiation because they are mostly:

A) composed of only electrons. B) opaque. C) composed of only protons. D) translucent.

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Which of the following telescopes is best suited for studying the hottest intergalactic gas (10 million K) in a cluster of galaxies?

Which of the following telescopes is best suited for studying the hottest intergalactic gas (10 million K) in a cluster of galaxies?

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Which of the following statements regarding the determination of surface habitability and subsurface habitability of a planet is correct?

A) both surface and subsurface habitability can be determined only from robotic space probes B) surface habitability can be determined remotely by studying reflected starlight from a planet, while determining subsurface habitability would require a robotic space probe C) both surface and subsurface habitability can be determined by analyzing reflected starlight D) subsurface habitability can be determined remotely by studying reflected starlight from a planet, while determining surface habitability would require a robotic space probe

Physics & Space Science

Earth's magnetic field affects cosmic rays by

A) deflecting them. B) slowing their speeds. C) destroying them. D) absorbing them.

Physics & Space Science