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A tennis ball of mass 0.60 kg strikes a brick wall and bounces straight back along the incoming direction. The collision is neither completely elastic nor inelastic. The ball's incident speed is 40 m/s and the ball's return speed is 35 m/s. If the time over which the ball is in contact with the wall is 6 ms, what is the average force on the wall (in N) during the collision?
A charge of +2.00 x 10^-9 C is placed at x = 0.0 m. A second charge of +4.00 x 10^-9 C is placed at x = 1.5 m.
The charge experiences a magnetic force of 7.41 10-3 N. A second charge q2 = 4.00 µC travels at an angle of 40.0° with respect to the same magnetic field and experiences a 1.80 10-3-N force. Identify the magnitude of the magnetic field and the ..
A ladder leans against a perfectly frictionless wall. The ladder is 3.00 meter high and the foot of the ladder is 1.50 meter away from the wall. Find the torque that this force exerts about the foot of the ladder
Draw a plot of ct vs x showing the positions of the three spaceships and of the light pulses vs. time, in Earth's frame. Find the times, according to the Earth frame, at which the pulses from ships C and A reach ship B.
A jet pilot takes his aircraft in a vertical loop (a) If the jet is moving at a speed of 1200 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed..
A 1590 kg car has just passed a diner. The closest the car came to the diner was R = 12.5 m, find the current magnitude of the angular momentum of the car about ther dinner
Football players measure their acceleration by seeing how fast they can sprint 40 yards (37m). For an 76kg player, what is the average power output for this sprint
A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while its pressure increases linearly with the volume from 110 kPa to 225 kPa. Evaluate how much work is done by the gas during this expansion
the internal energy of the gas in a gasoline engines cylinder decreases by 205.1 J. if 65.0 J of work is done by the gas, how much energy is transferred as heat
The Sun radiates energy at a rate of regarding 4 x 10^26 W (a) At what rate is the Sun's mass decreasing? (b) Estimate how long the Sun could last if it radiated persistently at this rate. Mass of the sun is 1.99 x 10^30 kg.
The transformer in the DC supply for my laptop has an output voltage of 20 volts when plugged into a 110 volt outlet. What is the input current of the power transformer
A 5m length of wire cariying a current of 5A lies on a hoizontal table with a rectangular top of dimensions 3.00m x 4.00m. What magnetic force acts on this segment of wire
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