Which of the following is a non-renewable resource?
a. uranium b. water c. wind d. biomass e. radiant solar
a
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Does Venus have auroras around its poles, like Earth? Why or why not?
A) no, because it lacks a global magnetic field B) yes, because it is bombarded by charged particles from the Sun C) no, because its atmosphere is too thick D) yes, because strong winds generate light near its poles
A 1.0-kg object moving 9.0 m/s collides with a 2.0-kg object moving 6.0 m/s in a direction that is perpendicular to the initial direction of motion of the 1.0-kg object. The two masses remain together after the collision, and this composite object then collides with and sticks to a 3.0-kg object. After these collisions, the final composite (6.0-kg) object remains at rest. What was the speed of
the 3.0-kg object before the collisions? a. 15 m/s b. 10 m/s c. 5.0 m/s d. 20 m/s e. 25 m/s
Two loudspeakers placed 6.00 m apart are driven in phase by an audio oscillator having a frequency range from 1595 Hz to 2158 Hz
A point P is located 4.70 m from one loudspeaker and 3.60 m from the other speaker. The speed of sound in the room is 344 m/s. At what frequency (or frequencies) of the oscillator does the sound reaching point P interfere destructively? (There could be more than one correct choice.) A) 2100 Hz B) 1720 Hz C) 1630 Hz D) 2130 Hz E) 2030 Hz
Charge of uniform density 12 nC/m is distributed along the x axis from x = 2.0 m to x = 5.0 m. What is the electric potential (relative to zero at infinity) at the origin (x = 0)?
a. 91 V b. 99 V c. 82 V d. 74 V e. 140 V