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A pulley with a radius of 10.0 cm is mounted on an axle that passes through the center of the pulley. The axle allows the pulley to rotate with negligible friction. The pulley is initially at rest. At t = 0, you start pulling on the end of a string that is wrapped around the outside of the pulley, giving the pulley a constant angular acceleration of 2.90 rad/s2. After t = 3.00 s of you pulling on the string, calculate the instantaneous angular speed of the pulley (rad/s).
"Jerk" is the rate of change of acceleration, and it's what can make you sick on an amusement park ride. Find an expression for the maximum jerk
Supply a small island (population of 1 million, some industry, some military) with electrical power. How many power plants would you need
a heat engine expels its waste at 300 C and has a carnot efficency of 25% without changing its intake temprature. What the temprature of the cold reservoir
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet, in years
The distance between two telephone poles is 48.0 m. while a 0.600 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. Draw a free-body diagram of the bird. (Do this on paper. Your instructor might ask you to turn i..
You are standing on a scale inside an elevator. The scale reads exactly your weight. What could be the velocity of the elevator, What is the acceleration of the elevator
Find the differential equation and use the initial conditions to determine the constant of integration.
Light of wavelength 646nm from a distant source is incident on a slit .720mm wide, What is the distance between the two dark fringes on either side of the central bright fringe
an insulated container is filled with a mix of 400 g of water at 20 C and 60 g of ice at 0 C. assuming negligible heat is exchanged with the container, what is the temperature of the mixture when it reaches thermal equilibrium.
A spring with a force constant of 585 N/m is compressed a distance of 40 cm. Find the resulting increase in the spring's mass in kg
A 4.00 kg block slides down a frictionless inclined plane with an acceleration 3.00m/s2. What is the angle of the incline above horizontal
The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 2.0 rev/s in 8.0 s. Through how many revolutions does the tub turn during this 21-s interval
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