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Suppose a 50.0kg teenager picks up a 11.0kg stereo and raises it 0.750 m from the floor to a tabletop.
(A) how much work did he do on the radio?
(b) how much work did he do to raise his own center of mass 0.400 m in the process?
Starting from rest, a 12 cm diameter compact disk takes 3.0s to reach its operating velocity of 2000 rpm. Assume angular acceleration is constant. How much torque is applied to the disk
A parallel-plate air capacitor is made by using two plates 19 cm square, spaced 3.5 mm apart. It is connected to a 3-V battery. What is the electric field between the plates
A pipe is opened at both ends. Its length is 22.81cm. If i excite standing waves in the pipe by blowing air over one of its ends, I hear a pitch of 712.5 Hz. a) find the distance between the antinodes at the two ends of the pipe.
A wave of amplitude 0.30 m interferes with a second wave of amplitude 0.20 m. What are the (a) largest and (b) smallest absolute values of the resultant displacement that can occur, and under what conditions will these maxima and minima occur?
Consult Interactive Solution 7.10 for a review of problem-solving skills that are involved in this problem. A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates.
A woman inside an elevator is standing on a scale. Before the elevator starts moving the scale shows 50 kg, calculate the acceleration of the elevator if after the elevator starts moving upward the scale reads 70kg. What will the reading of the sc..
A 15.0 kg gold statue is hanging under water. The density of gold is 19.3x103 kg/m3. What is the ratio of the tension in the cable when the statue is out of water over the tension when it is under water
In 1979, a TV station began broadcasting on channel 33 at a frequency of 582 Mhz. Obtain the value of capacitance that allows for this TV station to be tuned in
question a 2.1 kg body oscillates in shm on a spring that when extended 2.3 mm from its equilibrium position has an 10
In an X-ray tube, electrons with energy 38 keV are incident on a cobalt (Z = 27) target. Compute the cutoff wavelength for X-ray production
one particle has a mass of 2.00x10-3 kg and a charge of 7 microc. a second particle has a mass of 7.00 x 10-3 kg and
Suppose the first stage of a two-stage rocket has total mass 1.30×10^4 kg, of which 1.10×10^4 kg is fuel. The total mass of the second stage is 1000 kg, of which 700 kg is fuel. What is the final speed of the second stage
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