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Two people on ice skates are at rest and stand facing each other. They then push each other away. The mass of the person on the left is 90 kg. The mass of the person on the right is 60 kg. Find the ratio of their speeds immediately afterward. Which person has the higher speed?
Suppose that the speed of the water in the reservoir is zero, and that the water flow is steady. Overlook both air resistance and the height difference between the reservoir and the muzzle.
A horizontal force of 80N acts on a mass of 6 Kg resting on a horizontal surface. Calculate the total energy expanded in the acceleration
An electron is projected vertically upward with a speed of 1.50 * 10^6 m/s into a uniform magnetic field of 0.200 T, What is the radius of motion
A circular solenoid contains 100 turns of wire and carries a current of 2 amps. Its radius is 1 cm and its length is 10 cm. Calculate the magnetic flux through one turn of the wire
Suppose the amount of heat added to the ice block is doubled. By what factor must the mass of the ice be increased if the system is to have the same final temperature
questiona 20 kg floodlight in a park is supported at an end of a horizontal bean of negligible mass that is hinged to a
A car of mass 1.8 x10^3 kg is travelling east at a speed of 28m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8s. What is the average horizontal force exerted on the car even as it is braking.
Suppose a 29.5 kg child sits 1.89 m to the left of center on the same seesaw as the problem you just solved. Find the mass of the second child
A cylinder in a car engine takes Vi = 4.50 10-2 m3 of air into the chamber at 30° C and at atmospheric pressure. What is the new temperature of the air
What is the safe operating voltage for a 100 Ohm, 1/10W resistor, How much power is dissipated at half the maximum voltage
What angular resolution would you need to see the Sun and Jupiter as distinct points of light if you were looking at it from 15 light years away
Determine the magnitude and direction of impulse delivered to the ball by the floor.
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