A metal rod of length L in a region of space where a constant magnetic field points into the page rotates clockwise about an axis through its center at constant angular velocity ?. While it rotates, the point(s) at lowest potential is(are)
a.
A.
b.
B.
c.
C.
d.
D.
e.
A and E.
c
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Fundamental Forces: If a new force were discovered with a range on the order of 10-18 m, predict the approximate mass of the exchange particle. (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
Fill in the blank(s) with the appropriate word(s).
The singularity of a black hole is where general relativity predicts the density to become infinite
Indicate whether the statement is true or false
A 70-kg swimmer dives horizontally off a 500-kg raft. The diver's speed immediately after leaving the raft is 6.0 m/s. A micro-sensor system attached to the edge of the raft measures the time interval during which the diver applies an impulse to the raft just prior to leaving the raft surface. If the time interval is read as 0.25 s, what is the magnitude of the average horizontal force by diver
on the raft? a. 110 N b. 420 N c. 2 000 N d. 1 700 N e. 24 N
Is it possible to add energy to an isolated material and not have the material's temperature change?
1.No, the material's temperature will always go up when energy is added to it. 2.No, the material's temperature will sometimes go up and sometimes go down when energy is added, but it will always change. 3.Yes, temperature change is not a function of energy added to a material. 4.Yes, in some cases a material's temperature will change when energy is added to the material. In other cases, the material's temperature will not change when energy is added.