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Provide all logical steps in the solution(s)/ answer(s).
A child of mass 28.0 kg is sliding on ice with a velocity of 2.25 m/s in the positive x direction. She is holding a 2.4 kg ball in her hand. She throws the ball straight ahead of her with a velocity of 2.70 m/s (in the + x direction.)
a. What is her velocity immediately after releasing the ball?
(b) What ?s the velocity of the center of mass of the child and ball immediately after she releases the ball? (If you don?t do a calculation you must give a logical explanation for your answer.)
charges of 6.0 x 10-7 c are each located at three corners of a square that is 1.0 m on each side. a charge of -1.3 x
How far apart would the two sphere. Uranium-238 (U238) has three more neutrons than uranium-235 (U235). Compared to the speed of sound in a bar of U235, is the speed of sound in a bar of U238 higher, lower, or the same? There are several factors ..
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 79.2 m/s at ground level. What is its velocity just before it hits the ground
A person travels by car from one city to another with different constant speeds between pairs of cities. Determine the average speed for the trip
A jet plane is flying at a constant altitude. At time t1=0 it has components of velocity vx= 88m/s, vy= 110m/s. Find the magnitude of the average acceleration
One particle has a mass of 3.00 multiplied by 10-3 kg and a charge of+7.80µC. A second particle has a mass of 6.00 multiplied by 10-3 kg and the same charge. The two particles are initially held in place and then released.
In an experiment performed at the bottom of a very deep vertical mine shaft, a ball is tossed vertically in the air with a known initial velocity of 10.0 m/s, calculate the depth of the shaft
A car drives straight off the edge of a cliff that is 64-m high. The police at the scene of the accident note that the point of impact is 110-m from the base of the cliff. How fast was the car travelling while it went over the cliff.
Calculate the wavelength of light emitted by a hydrogen atom when an electron makes a transition from n=8 to n=2 levels
At the end of the trip she measures the pressure to be 3 105 Pa. Ignoring the expansion of the tires, find out the air temperature inside the tires at the end of the trip.
A transmission line that has a resistance of 0.5 ohm per km of length is used to transmit 200 MW across 300 miles. what should be the transmission voltage
A steel piano wire, of length 0.650 m and mass 5.80 g is stretched under a tension of 460.0 N. What is the speed of transverse waves on the wire
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