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A farm tractor tows a 3700 kilogram trailer up an 18o incline with a steady speed of 3.2 m/s. Determine what force does the tractor exert on the trailer? (Ignore friction)
a common he-ne laser emits light of wavelength 633 nm with a bandwidth of 1.00 x 108 hz. find the uncertainty in energy
A small airplane flies with a speed relative to the ground (ground speed) of 219.0 km/h in a direction 20.0 degrees to the east of north. what is the speed of the wind
A block is released from rest on an inclined plane and moves 3.1 m during the next 3.9 s. What is the coefficient of kinetic friction k for the incline
Calculate the escape velocity for a planet that has twice the mass of Earth and is half the size of Earth
A compact disc (CD) contains music on a spiral track. Music is put onto a CD with the assumption that, during playback, Find the constant tangential speed at which music is detected
a box of Cheerios (mass mC = 1.8 kg) and a box of Wheaties (mass mW = 2.5 kg) are accelerated across a horizontal surface by a horizontal force applied to the Cheerios box. what is the magnitude of the force on the Wheaties box from the Cheerios bo..
A flat stack of two materials, the first of index of refraction 1.52 and thickness 2 mm, and the second of index of refraction 1.63, What is the size (radius) of the circle of light
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.23 m/s. What is his speed when he catches up
A spherical capacitor of inner radius 10 cm stores 10nC of charge when charged with 10V. Find s capacitance, its outer radius and the volume between the two spheres
suppose that an insulating container of negligible mass contains 0.55 kg of water at a temperature of 64 degrees c. now
A certain copper wire has a resistance of 11.0?. What is the resistance of each piece
A compact disk spins with angular velocity 40.8rad/s. The player is turned off, and 2.10s later the CD has stopped. Find its average angular acceleration
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