What is the radius of curvature of the path of a 3.0-keV proton in a perpendicular magnetic field of magnitude 0.80 T?
a. 9.9 mm
b. 1.1 cm
c. 1.3 cm
d. 1.4 cm
e. 7.6 mm
a
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Refraction occurs for both sound and light. When refraction occurs there is a change in
1) frequency. 2) wavelength. 3) speed. 4) all of the above. When sound travels faster near the ground than above, bending of sound tends to be 5) upward. 6) downward. 7) neither of these.
Suppose you put a chocolate layer on pieces of candy. Compared with the amount of chocolate used to cover 1 pound of large pieces, if you cover 1 pound of smaller pieces you'll use
A) less chocolate. B) the same amount of chocolate. C) more chocolate. D) makes no difference
A wrench is placed at 30 cm in front of a concave lens with a focal length of magnitude 10 cm. What is the magnification of the wrench?
A) 0.25 B) -0.25 C) 0.67 D) -0.67 E) 4.0
A 2 kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s, and they stick together. After the collision, the velocity of the combined bodies is __________ m/s pointing __________
Fill in the blank(s) with correct word