Free Fall: A 10-kg rock and a 20-kg rock are thrown upward with the same initial speed v0 and experience no significant air resistance. If the 10-kg rock reaches a maximum height h, what maximum height will the 20-kg ball reach?
A. h/4
B. h/2
C. h
D. 2h
E. 4h
Answer: C
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Diffraction Gratings: A diffraction grating has 5150 lines per centimeter ruled on it. What is the angular separation between the first- and the third-order bright spots on the same side of the central maximum when the grating is illuminated by a beam of light with wavelength 633 nm?
Fill in the blank(s) with the appropriate word(s).
Charon's orbit
A) is retrograde. B) lies exactly in Pluto's orbital plane. C) is highly inclined to Pluto's orbital plane. D) is perpendicular to Pluto's equator. E) has not been determined yet.
A proton initially moves left to right along the x axis at a speed of 7.0 × 10^3 m/s. It moves into an electric field, which points in the negative x direction, and travels a distance of 0.70 m before coming to rest. What acceleration magnitude does the proton experience?
a. 7.0E+3 m/s2 b. 3.5E+7 m/s2 c. 1.8E+9 m/s2 d. 1.4E+12 m/s2 e. 2.5E+9 m/s2
Exhibit 12-1
The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track.
?
?
Use this exhibit to answer the following question(s).
Refer to . How many revolutions does she complete in the first 12 minutes?
a.
4
b.
8
c.
12
d.
16
e.
32