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Q1. A car travelling east at 38.0 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25.0 m/s in 2.90 s. How far does the car travel in the 2.90-s time period?
Q2. A mass m = 6.7 kg hangs on the end of a massless rope L = 2.1 m long. The pendulum is held horizontal and released from rest.
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting point (or 2/5 L from its lowest point).
What is the magnitude of the tension in the string at the top of new path (directly above the peg)?
What was the power of the motor that kept the wheel rotating at 6.5 rev/hr in spite of friction.
What is the change in kinetic energy of the puck
Find out the coefficient of static friction
What is moment of inertia
What is the time of oscillation of block
An electric field of 8.60 x 107 V/m is desired between two parallel plates, each of area 35.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
Use Gauss law to compute amount of charge
The car's motion can be divided into three different stages: its motion before the driver realizes he's late, its motion after the driver hits the gas (but before he sees the police car), and its motion after the driver sees the police car. Which of ..
A father (m = 90 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast is the father moving.
A crate of 30.2- tools rests on a horizontal floor. You exert a regularly increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 319. After that you must reduce your push to 227 to keep it moving at a..
While Voyager 2 sent back pictures of Neptune during its historic flyby of that planet in 1989, the spacecraft's radio signals travelled for 4 hours at the speed of light to reach Earth. How far away was the spacecraft.
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
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