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Two vectors, and lie in the xy plane. Their magnitudes are 3.54 and 7.08 units, respectively, and their directions are 305o and 55o, respectively, as measured counterclockwise from the positive x axis.
A father racing his son has three-fifths the kinetic energy of the son, who has half the mass of the father. What is the original speed of the son
a particle is projected up a plane that makes a 25deg angle with the horizontal. if initial velocity is 15 ms and
Your task in physics laboratory is tomake a microscope from two lenses. One lens has a focal length of 2.4 cm, the other 1.2 cm. You plan touse the more powerful lens as the objective, and you want the eye piece to be 17 cm from the objective
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. What is the angular acceleration in the second training exercise
An ideal gas is taken through a quasi-static process described by P = alphaV2, How much work is done on the expanding gas in this process
2150 kg satellite is in a circular orbit 780 km (780 x 103 m) above the surface of the earth. What is the speed of the satellite in its orbit
A 5 m deep river runs on a horizontal 7 m long bridge and 8.5 m wide, which is hung in air 10 m high above the ground. What is the force on the side of the bridge
q1. an electric field of 254000 nc points due west at the certain spot. what are the magnitude and direction of the
Two workers are trying to move a heavy crate. One pushes on the crate with a force , which has a magnitude of 444 newtons (N) and is directed due west.
a car wheel with a diameter of 30 inches has a linear velocity of 30 mph. What is the angular displacement of the car whell during the 10 seconds of acceleration
A box is placed on a conveyor belt that moves with a constant speed of 1.05. The coefficient of kinetic friction between box and belt is 0.80. How much time does it take for the box to stop sliding relative to belt.
A uniform magnetic field is at right angles to the plane of a wire loop. what is the area of the loop
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