The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T that are perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed up out of the page, the direction of the magnetic field at P is closest to the direction of
A. E.
B. F.
C. G.
D. H.
E. A
Answer: E
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An astronaut on the Moon drops a feather and a hammer at the same time. Which hits the ground first?
A. The hammer hits first due to its larger mass. B. The feather hits first since there is no air resistance on the Moon. C. The feather hits first due to the decreased weight of the hammer. D. The feather and the hammer hit the ground at the same time.
An object is placed 100 cm in front of a diverging lens with a focal length of magnitude 25 cm. A converging lens having a focal length of magnitude 33.33 cm is placed 30 cm past the first lens. Where is the final image formed?
A) 3.0 meters before the second lens B) 100 cm after the second lens C) 30 cm after the second lens D) 20 cm in front of the first lens E) 3.0 cm before the second lens
If the temperature of a gas in a container goes from 0 C to 300 C, the pressure will
A stay the same B. double C. become 300 times greater D. become infinite
The amount of neutrinos measured from Earth were __________
Fill in the blank(s) with the appropriate word(s).