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A car, in overtaking trailer, uniformly accelerated its speed from 40 kph to 90 kph in 8 seconds. Calculate the distance traveled during the period of acceleration.
Imagine a hydraulically operated dentist's chair having a mass of 200.0 kg, and in it is sitting a 54.8-kg patient. The large piston beneath the chair has a diameter of 5.00 cm, whereas the small piston, moved by a pedal on which the dentist steps..
A charge of -3.0 nC is at the origin and a second charge of 15.0 nC is at x = 7.00 m. Find the magnitude and direction of the electric field
A constant force is applied to object A and causes it to accelerate5m/s^2. The same force is applied to object B which accelerates 3m/s^2. The same force is applied to object C andit accelerates 8m/s^2.
A fully loaded, slow-moving freight elevator has a cab with a total mass of 1310 kg, which is required to travel upward 50 m in 3.4 min, starting and ending at rest. The elevator's counterweight has a mass of only 960 kg, and so the elevator motor mu..
A rocket A moves past a lab B at a speed of .9c. A technician in the lab records 3.5 s for the time of an event that occurs on the rocket. What is the time as reckoned by a person aboard the rocket?
Find where and when the two stones will meet.
You & your friend peter are putting new shingles on a roof pitched at 25 degrees. You are sitting on the very top of the roof when peter, who is at the edge of the roof directly below you, 5.1m away, asks you for the box of nails. Rather than carr..
A Hydrogen atom exists in an excited state for typically around 10 nanoseconds. How many revolutions would Bohr's theory suggest that an electron would make in an n = 2 state before decaying?
A 7.10 kg particle is subject to a net force that varies with position as shown in the figure. The particle starts moving at x = 0, very nearly from rest. What is its speed at the following positions?
An extension cord made of two wires of diameter 0.129 cm (no. 16 copper wire), how much power is dissipated in the cord
a 13.4-kg block rests on a horizontal table and is attached to one end of a massless horizontal spring. by pulling
The work done by an engine equals one-half the energy it expels to a cooler at 0C. what is the temperature of the heater
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