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Question: A 75kg student is standing atop a spring in an elevator that is accelerating upward at 3.0m/s^2 The spring constant is 2300 N/m. By how much is the spring compressed?
a speeder passes a parked police car at a constant speed of 34.9 ms. at that instant the police car starts from rest
What is the value of g at the location of this satellite?
A box of mass m slides across a horizontal table with coefficient of friction ? . Find the acceleration of the system
Can you please help me set this problem up? Suppose that now you want to make a scale model of the solar system using the ball bearing .0014 m to represent the sun. (a) How far from it would you place a sphere representing the earth?
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
A piece of Nichrome wire passes a current of 0.813 A when a potential of 1.44 Volts is applied. What is the resistance of the wire
A player bounces a basketball on the floor, compressing it to 80.0 of its original volume. The air (assume it is essentially gas) inside the ball is originally at a temperature of 20.0 and a pressure of 2.00 atm. The ball's diameter is 23.9 .
If an electric field strength greater than 3.88E+6 N/C causes the air to break down and conduct charge (lightning), what is the maximum charge the cloud can hold
Two metal balls A and B of negligible radius, connected by a taut nonconducting thread of length 2.40 m, are floating at rest on Space Station Freedom between two metal bulkheads. Ball A carries charge q, and ball B carries charge 2q.
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 3781 kg), which is made of steel (? = 7850 kg/m3). In typical comic-book fashion, they decide to raise the yacht (which is now on the bottom of a lake) by filling it with ping-p..
If a guitar string has a tension of 20 newtons and has a mass per unit length of 9.8x10^-4 kg/m, with what speed does a pulse travel down the string
A heat engine utilizes a heat source at 580 degrees Celsius and has an ideal (Carnot) efficiency of 28%, what must be the temperature of the heat source
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