A 30.00 kg mass falls from a height of 4.000 m. The momentum of the mass just before it hits the ground is

A. 144.2 kg m/s.
B. 187.8 kg m/s.
C. 320.0 kg m/s.
D. 442.4 kg m/s.
E. 502.1 kg m/s.


B. 187.8 kg m/s.

Physics & Space Science

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____________________ formed as Mercury cooled and shrank

Fill in the blank(s) with correct word

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Suppose the x-position of an oscillating object is given by . What is the object’s speed at time t = 0?

A. A
B. Zero
C.
D.
E.
F. Something else (specify)
T. We are not given enough information to answer.

Physics & Space Science

Lunar eclipses can occur only during a

A) new Moon. B) first quarter Moon. C) full Moon. D) third quarter Moon.

Physics & Space Science

Magnetism had been a known phenomenon for some time before its relation to electric currents was found. That a current in a wire produces a magnetic field was discovered by:

a. Ampere. c. Ærsted. b. Maxwell. d. Tesla.

Physics & Space Science