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A 2000 lbm automobile is driving down a level road at 70 mph. The engine is disengaged and the automobile is allowed to coast. After 7 seconds, the speed of the automobile is 60 mph. Use this information to estimate the power required for this automobile to travel at 65 mph on this road.
an electric field of intensity 3.0 knc is applied along the x-axis. calculate the electric flux through a rectangular
An elastic cord is 66 cm long when a weight of 66 N hangs from it but is 86 cm long when a weight of 76 N hangs from it. What is the "spring" constant k of the elastic cord.
A free electron and a free proton are placed in an identical electric field. which of the following statement are true?
A piano wire with mass 3.45g and length 85.0cm is stretched with a tension of 31.0N. Calculate the average power carried by the wave
A computer to be used in a satellite must be able to withstand accelerations of up to 23 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
A pulley, with a rotational inertia of 1.1 x 10-3 kg·m2 about its axle and a radius of 5.8 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F = 0.16t + 0.43t2, with F in newtons and t in seconds.
A fighter pilot dives his plane toward the ground at400 m/s. He pulls out of the dive on a vertical circle. What is the minimum radius of the circle
starting from rest, a 4.1 kg block slides 2.00 m down a rough 30 degree incline. The coefficient of kinetic friction between the block and the incline is uk= 0.436, determine the work done by the normal force
A particle moves in a plane with a constant radial velocity rhat = 4 m/s. The angular velocity is constant and has magnitude θhat = 2 rad/s. When the particle is 3 m from the origin, find the magnitude of the acceleration.
A bar magnet is dropped through a coil of wire. Describe what will be observed on the galvanometer by sketching a graph of induced emf versus time
Capacitors are used in many applications where one needs to supply a short burst of relatively large current. Approximately what is the resistance of the lamp if the current reaches 5.0% of its original value in 1.8 ms
the electric field at the point x 5.00 cm and y 0 points in the positive x direction with a magnitude of 15.0 nc. at
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