The only force acting on a 2.0-kg body moving along the x axis is given by Fx = (2.0x) N, where x is in m. If the velocity of the object at x = 0 is +3.0 m/s, how fast is it moving at x = 2.0 m?
a. 4.2 m/s
b. 3.6 m/s
c. 5.0 m/s
d. 5.8 m/s
e. 2.8 m/s
b
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a. Cyan b. Red c. Blue d. Yellow
Determine the magnitude and sense (direction) of the current in the 500-? resistor when I = 30 mA.
A. 56 mA left to right B. 56 mA right to left C. 48 mA left to right D. 48 mA right to left E. 26 mA left to right
The number of stars in the Milky Way Galaxy is approximately ________
A) a few hundred million B) a few hundred billion C) a few hundred D) a few hundred thousand
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H. When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
a.
E.
b.
F.
c.
G.
d.
H.
e.
A.