Which of the following is a unit conversion?
A) 10-9s
B) 106W
C) 1000 g
D) 1 in = 2.54 cm
E) 0.062 yd = 6.2 × 10-2 yd
D
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Coulomb's Law: Two tiny particles having charges of +5.00 ?C and +7.00 ?C are placed along the x-axis. The +5.00-µC particle is at x = 0.00 cm, and the other particle is at x = 100.00 cm. Where on the x-axis must a third charged particle be placed so that it does not experience any net electrostatic force due to the other two particles?
A. 4.58 cm B. 45.8 cm C. 50 cm D. 9.12 cm E. 91.2 cm
A box is being pulled across a rough floor at a constant speed. What can you say about the work done by friction?
a) friction does no work at all b) friction does negative work c) friction does positive work
Briefly summarize the stages of life for a low-mass star
What will be an ideal response?
Exhibit 15-1
A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, air is trapped above the dashed line in the bunker.
?
?
Use this exhibit to answer the following question(s).
Refer to . The gauge pressure at point A, in Pa, is
a.
3.92 × 105.
b.
4.90 × 105.
c.
5.39 × 105.
d.
5.88 × 105.
e.
6.89 × 105.