A long nonconducting cylinder (radius = 12 cm) has a charge of uniform density (5.0 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the axis of the cylinder
a. 20 N/C
b. 27 N/C
c. 16 N/C
d. 12 N/C
e. 54 N/C
b
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A simple pendulum has a mass of 0.50 kg and a length of 1.0 m. It is displaced through an angle of 30° and then released. After a time, the maximum angle of swing is only 10°. How much energy has been lost to friction?
a. 2.0 J c. 0.66 J b. 1.6 J d. 0.58 J
Elliptical galaxies, with older stars, will be more likely to have evolved intelligences than the stars close to us in the Milky Way
Indicate whether the statement is true or false
An athlete competing in long jump leaves the ground with a speed of 9.14 m/s at an angle of 35.0° above the horizontal. How long does the athlete stay in the air?
A) 0.501 s B) 0.876 s C) 1.07 s D) 2.53 s E) 0.535 s
The volume of a gas changes from 0.750 m3 to 0.320 m3 at a constant pressure of 1.5 × 10^5 Pa. How much work is done by the gas on its environment?
a. 4.8E+4 J b. –6.5E+4 J c. –4.8E+4 J d. 6.5E+4 J