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A 1320-kg car is moving due east with an initial speed of 25.3m/s. After 11.5 s the car has slowed down to 15.2 m/s. Find the magnitude of the net force that produces the deceleration.
A pump is required to lift a mass of 770 kg of water per minute from a well of depth 14.2 m and eject it with a speed of 17.5 m/s. How much kinetic energy does the pump give the ejected water
Given the initial velocity V1=2i+1j m/s of a moving object. It is subject to the acceleration A=1i+2j m/s^2, What is the object's final speed
What provided the added kinetic energy? None of these is correct. the momentum of the platform the man moving the weights further away from his body the man pulling the weights closer to his body
A 33.6 kg beam is attached to a wall with a hinge and its far end is supported by a cable. What is the horizontal component of the force exerted by the hinge on the beam
two parallel mirrors are a distance d apart. An object is placed 1.0 inch in front of the right-hand mirror. Calculate the distance between the mirrors
An engine absorbs 1.68 kJ from a hot reservoir at 277°C and expels 1.23 kJ to a cold reservoir at 27°C in each cycle. How much work is done by the engine in each cycle
A constant friction force of 5 N acts on a 85 kg skier for 20 s. What is the skier's change in velocity
A particle of charge +e is initially at coordinate z = 20 nm on the dipole axis through an electric dipole, on the positive side of the dipole. (The origin of z is at the dipole center.) The particle is then moved along a circular path around the ..
A train is travelling up a 3.2 degree incline at a speed of 3.55 m/s as the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
They stick together after the collision and are going 10 m/s after the collision. If they skid for 6seconds before stopping, how far did they skid?
A spring is hung from the ceiling. A 0.463 -kg block is then attached to the free end of the spring.Find the angular frequency of the block's vibrations
A cancer patient is undergoing radiation therapy in which protons with an energy of 1.2 MeV are incident on a 0.25 Kg tumour. How many protons are absorbed by the tumour
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