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A pinball machine uses a spring launcher that is compressed 6.6 cm to launch a ball up a 17 °ramp. Assume that the pinball is a solid uniform sphere of radius r = 1.0cm and mass m = 28 g .If it is rolling without slipping at a speed of 3.1 m/s when it leaves the launcher, what is the spring constant of the spring launcher?
The component of the external magnetic field along the central axis of a 69-turn coil of radius 23.0 cm decreases from 1.90 T to 0.400 T in 1.70 s. what is the magnitude of the induced current in the coil
Find the area under the graph of the polar curve r=(e^theta) for 0
Flywheels are large, massive wheels used to store energy. Find how long does it take the flywheel to reach top speed
As noted above, the volume of a sphere is 4/3 pi^3. Write out an equivalent expression of this volume in terms of its diameter (d) since it is d that will be gauged: (an exercise in algebra)
When a current flows in an aluminum wire of diameter 3.29 mm, the drift speed of the conduction electrons is 2.85 × 10-4 m/s. What is the electron current in the wire
a proton with a speed of 2.0 x105 ms falls through a potential difference v annd thereby increases its speed to 4.0
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 10cm in diameter and 60cm in length. What is the total length of wire you will need to meet these specifications
Two identical wires with a weight of 4.95E+4 N/m, are located one above the other, in a vertical plane above the surface of the earth. The wires are aligned north-south so that the earths's magnetic field will not affect them.
What is the difference between momentum by convective transport and momentum by molecular transport?
A 330 ohm (330 ?) resistor is connected to an unknown voltage source. The Voltage- Current Sensor measures a current of 0.50 amps (0.50 A). What is the voltage of the voltage source
Assume a light ray hits the surface of the water in a container 39 inches deep at an angle of incidence of 18 degrees. Determine the time taken for the light to hit the bottom of the container
A large cruise ship of mass 6.80 107 kg has a speed of 12.8 m/s at some instant. what is the ship's kinetic energy at this time
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