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To push a 22 kg crate up a frictionless incline, angled at20° to the horizontal, a worker exerts a force of 88.5N, parallel to the incline. As the crate slides 1.50m, (a) how much work is done on the crate by the worker's applied force? (b)How much work is done on the crateby the weight of the crate? (c)How much workis done on the crate by the normal force exerted by the incline onthe crate? (d) What is the total work done onthe crate?
Four ropes, all at right angles to each other, pull on a ring. the force N, W; and D= 20N, S. Find the resultant direction of force on the ring
An 90.0 kg skydiver jumps out of a balloon at an altitude of 1 180 m and opens the parachute at an altitude of 175m. find the speed of the diver when he lands on the ground
Suppose that the Earth's orbit around the Sun is perfectly circular. Employing conservation arguments, find the value of the eccentricity e of the orbit
Fred (mass 72 kg) is running with the football at a speed of 5.8 m/s when he is met head-on by Brutus (mass 120 kg), who is moving at 4.0 m/s. How far do they slide
An ultralight plane and pilot have a total mass of 156 kg. what is the net force acting on the plane and pilot
A woman at an airport is towing her 14.0-kg suitcase at constant speed by pulling on a strap at an angle, What is the magnitude of the normal force that the ground exerts on the suitcase
Two adjacent natural frequencies of an organ pipe are found to be 750 Hz and 825 Hz. Calculate the fundamental frequency and length of this pipe
A uniformly charged ring is 1.0 cm in radius. The electric field on the axis 3.5 cm from the center of the ring has magnitude 2.5MN/C
Lightning occurs when there is a flow of electric charge (mainly electrons) between the ground and the thundering cloud. How much charge flows between the ground and the cloud
A car drives onto a loop detector and increases the downward component of the magnetic field within the loop from 1.2*10^-5 to 2.6*10^-5 in 0.38s
A circuit containing a 5.5 H inductor has an alternating current supplied to it. If Irms is 5.1 A and Vp is 76 V, find the frequency of the signal
The figure below shows particles 1 and 2, each of mass m, attached to the ends of a rigid massless rod of length L1 + L2, with L1 = 17 cm and L2 = 77 cm. The rod is held horizontally on the fulcrum and then released.
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