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A train is slowing down from 46 m/s to 12 m/s in 9.0 s. Assume constant acceleration.
a) What was its acceleration? (m/s^2)
b) How far did it travel in this time? (m)
A ball is thrown toward a cliff of height h with a speed of 31m/s and an angle of 60 degrees above horizontal. What was the maximum height of the ball
When two capacitors are connected in parallel across a 10.0 V rms, 1.0 kHz oscillator, the oscillator supplies a total rms current of 523 mA. What are the values of the two capacitors
a helicopter is lifting two crates simultaneously. one crate with a mass of 148 kg is attached to the helicopter by
On a cold night the temperatures of the two surfaces of a glass windowpane in a house are 7.8° C on the outer surface, Find the rate at which heat is conducted through the glass per square meter of window area
A pressure of 10 Pa is applied through a piston uniformly on the surface of water in a cylinder. How much of this pressure if it is 80 cm deep?
4 kg of liquid seawater with initial temp 0 C and salinty 3 % is mixed with pure water with initital temp 15 C the system reaches equilibrium at 5 C
The temperature of the surface of the sun is 6000K and its radius is 696,000Km. How much energy is the sun radiating into space per second
A wooden rod of negligible mass and length 82.2 is pivoted about a horizontal axis through its center. A white rat with mass 0.440 clings to one end of the stick, and the mouse with mass 0.220 clings to the other end. The system is released from rest..
question1two blocks are associated by a light string that passes over a frictionless pulley. the block of mass m1 lies
Two charges, q1 and q2, are separated by a distance, r, and exert a force, F, on each other. What will the new force be if:
The distance to the Andromeda Galaxy is estimated at about 2 ´ 106 light years. A light year is distance travelled by light in one year; if the speed of light is 3 ´ 108 m/s, about how far is it from our galaxy to Andromeda? (1 year = 3.15 ´ 107 s..
A binary star system has two stars, each with the same mass as our sun, separated by 1.20×1012m. What is the comet's speed at the midpoint
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