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The tractor-trailer unit is moving down the incline with a speed of 6.8 mi/hr when the driver brakes the tractor to a stop in a distance of 5.2 ft. Estimate the percent increase n in the hitch-force component which is parallel to the incline, compared with the force present at steady speed. The cart and its load combined weigh 500 lb. State any assumptions. The incline has a negative slope of 6/11 (down 6, right 11).
A bicyclist rides 3.01 km due east, while the resistive force from the air has a magnitude of 7.71 N and points due west. Find the work done by the resistive force during the round trip
A skier (m=55.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.90 m and D = 10.4 m, determine H.
An infinite nonconducting sheet has a surface chargedensity σ = 0.10µC/m2 on one side. How far apart areequipotential surfaces whose potentials differ by 147 V?
Suppose the same masses are used for a force table experiment as were used in Part 1, but each pulley is moved 180° so that the 0.100 kg mass acts at 200°, and the 0.200 kg mass acts at 270°. What is the magnitude of the resultant in this case
Find the total work done on the car
The bullet penetrates into the block and stops due to its friction with the block. The compound system of the block plus the bullet rises to a height of 11 cm along a circular arc with a 20 cm radius A bullet with a m1 = 30.0 g mass is fired horizont..
A particle of mass m is attracted to a force center with force of magnitude k/r2. Use plane ploar coordinates and find Hamilton's equations of motion.
The drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides. All four wires are much longer than the sides of the square. The net magnetic field at the center of the square is 72 μT directed into the drawing..
Suppose a manufacturing plant has an average sound intensity level of 97.0 dB created by 25 identical machines. Find the sound intensity created by one such machine
The speed of light in a transparent medium (such as glass) is less than the speed of light in a vacuum. Is this a violation of the theory of relativity.
A vertical solid steel post 25 cm in diameter and 3.50 m long is required to support a load of 7100 kg. You can ignore the weight of the post. What is the strain in the post
A circular coil enclosing an area of 99 cm2 is made of 202 turns of copper wire. The wire making up the coil has resistance of 6.0 , and the ends of the wire are connected to form a closed circuit. what average current flows through the coil during..
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