As a bowling ball that rolls off the edge of a table falls, its vertical component of motion
A) decreases.
B) remains constant.
C) increases.
Answer: C
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Compare the planar atom density of the {100}-type planes with the {111}-type planes in the FCC structure of copper that has a lattice parameter of 0.361 nm.
What will be an ideal response?
Based on current estimates of the value of Hubble's constant, approximately how old is the universe?
A) 10 billion years old B) 12 billion years old C) 14 billion years old D) 18 billion years old E) 20 billion years old
The primary reason the Moon lacks an atmosphere is because
A. the Moon lacks sufficient gravity to retain an atmosphere. B. the Moon is made up of the wrong kinds of rocks to release atmospheric gases. C. there is no life on the Moon. D. Earth's gravity pulls away any atmosphere the Moon collects.
An object of mass 2.00 kg starts at rest from the top of a rough inclined plane of height 20.0 m as shown in Fig. 8-9
If the work done by the force of friction is -150 J, what is the speed of the object as it reaches the bottom of the inclined plane? Use g = 10.0 m/s2. A) 15.8 m/s B) 150 m/s C) 10.0 m/s D) 20.0 m/s E) 200 m/s