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In a college homecoming competition, 16 students lift asports car. While holding the car off the ground, each studentexerts an upward force of 400 N.
(a) What is the mass of the car in kilograms?
(b) What is the weight in pounds?
An energy-efficient lightbulb, taking in 24.0 W of power, can produce the same level of brightness as a conventional lightbulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10 000 h and its purchase price is $4.20, whereas..
A thin metal film of length 2.80 cm, width of 0.700 cm, and thickness of 30.0 micrometers is used to measure the Hall effect. Calculate the drift velocity of the charge carriers
During the "heavy bombardment" period of our solar system astroids slammed into earth with large speeds thus resluting in earth becoming warmer. What form did the energy take before it was heat
a charge of 3.10?c is held fixed at the origin. a second charge of 3.10?c is released from rest at the position 1.25 m
a 6.0 kg block is placed near the top of a frictionless ramp which makes an angle of 34deg to the horizontal. a
a satellite would have a mass of 200 kg on the surface of the moon. determine the weight of the satellite in pounds
A skateboarder, starting from rest, rolls down a 12.2-m ramp. When she arrives at the bottom of the ramp her speed is 8.61 m/s. Determine the magnitude of her acceleration, assumed to be constant
A train on one track moves in the same direction as a second train on the adjacent track. The first train, which is ahead of the second train and moves with a speed of 30.4 m/s, blows a horn whose frequency is 124 Hz. If the frequency heard on the se..
Suppose a 61 kg boy and a 43 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
the temperature of a plastic cube is monitored while the cube is pushed 2.4 m across a floor at constant speed by a
a disk has a radius of 0.50m and a rotational inertia of 4.0 kg-m-m and rotates about a central axis perpendicular to
A 16 mH inductor is connected across an AC generator that produces a peak voltage of 11V. What is the peak current through the inductor
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