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You are given three resistors, each of 10 kQ, and a 9-V battery whose negative terminal is connected to ground. With a voltage divider using some or all of your resistors, how many positive-voltage sources of magnitude less than 9 V can you design? List them in order, smallest first. What is the output resistance (i.e., the Thevenin resistance) of each?
At a height of fifteen meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
Compute the required time by the current to reach an initial value in an inductive discharge circuit.
A 0.500 kg length of copper wire is warmed 30.0°C by the passage of electrical current. How much heat was generated by the current flow
The flywheel in a car is a solid cylinder with a mass of 100 kg, a radius of 12 cm, and a length of 5.0 cm. What is the kinetic energy of the cylinder
An unmarked police car travelling a constant 80 km/h is passed by the speeder travelling 100 km/h. precisely l.0s after the speeder passes, the policeman steps on an accelerator; if the police car's acceleration is 2.0m/s2, how much time passes befor..
The drill pipe has an outer diameter of 75 mm, a wall thickness of 6 mm, and a weight of 0.8 kN/m. If it is subjected to a torque and axial load as shown.
Two spaceships approach Mars from the same direction. One has a speed of 0.2c, What is the speed of one spaceship relative to the other
A charging RC circuit controls the intermittent windshield wipers in a car. The emf is 12.0 V. What resistance should be used in the charging circuit if the wipers are to operate once every 1.40 s
A 2.0 kg ball swings in a vertical circle on the end of an 80cm long string. Calculate the speed, magnitude and direction of acceleration
The temperature of 3.00 mol of an ideal diatomic gas is increased by 47.0°C without the pressure of the gas changing. What is the change in the internal energy for the gas
The end point of a spring vibrates with a period of 1.9 seconds when a mass m is attached to it. When this mass is increased by 9.630×101 kg, the period is found to be 4.1 seconds. Find the value of m.
a beam of light enters a piece of zircon at an angle of incidence of 30 degrees. what is the angle of refraction in the zircon
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