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A skier of mass 85.0 kilogram is pulled up a snow-covered slope at a constant speed by a tow rope that is parallel to the ground. The ground slopes upward at a constant angle of 28.0o above the horizontal and you can neglect friction. Find what is the tension in the tow rope?
In a dramatic lecture demonstration, a physics professor blows hardacross the top of a copper penny that is at rest on a level desk. what is the minimum air speed needed to lift the penny off the table top
One 20-year-old twin brother takes a space trip with a speed of 0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the age of the Earth-based twin brother?
An object on the ground is lunched at 10.0m/s at an angle of 75.0 above the horizontal. what is the horizontal displacment of the object
A full-wave rectifier circuit with a 1K ohm load perates from a 120V (rms) 60-Hz huusehold supply throught a 5-to-1 transformer having a center-tapped secondary winding. It uses two silicon diodes that can be modeled to have 0.7-V drop for all cur..
A total charge of 7.05 10-6 C is distributed on two different small metal spheres. How much charge is on each sphere
A series RCL circuit contains a 24.7-? resistor, a 1.95-?F capacitor, and a 6.02-mH inductor. When the frequency is 2870 Hz, what is the power factor of the circuit
A 2.4 kg breadbox on a frictionless incline of angle %u03B8 =43 is connected, by a cord that runs over a pulley, What is the speed of the box when it moves 10 cm down the incline
A bunch of grapes is placed in a spring scale at a supermarket. What is the mass of the grapes
a spring-loaded cannon aimed at 41 o above the horizontal is on the last car of a long train of flat cars. the train
Find the coefficient of friction between crate and floor
The pickup coil in an electric guitar contains 10,000 turns and hasa diameter of 1.6 mm. When the pickupcoil is very close to a guitar string, there is a field ofmagnitude B = 0.14 T in thecoil. If this steel string is vibrating at a frequency of1..
5 kg of water at 60 degrees are put in contact with 1 kg of ice at 0 degrees and are thermally isolated from everything else. What is the change in entropy of the universe while the ice melts
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