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A 9150 kg railroad car travels alone on a level frictionless track with a constatnt speed of 15.0m/s. A 4350 kg load, initially at rest, is dropped onto the car. What will be the car's new speed?
1.give the definition of electrical circuit. draw the simplest electrical circuit and mark the directions of electrical
A stone is thrown vertically upward with a speed of 16.0 m/s. How fast is it moving when it reaches a height of 12 m? How long is required to reach this height?
Suppose that gravatational mass and inertial mass aredifferent but they are proportional to one another. Determine the acceleration of a freely falling object near thesurface of the Earth
Light enters a 10 cm thick, parallel face, glass block at normal line drawn through the block. The angle of incidence for the light is 30 degrees. What is the index of refraction of the prism
A thin film of acetone (n = 1.25) coats a thick glass plate (n=1.50). White light is incident normal to the film. Calculate the thickness of the acetone film
consider light incident in seawater is n 1290 on glass n 1.5 and we want to estimate what happens with reflections
A 1kg block is attached to a horizontal spring where k = 200N/m. The block is extended 5cm (.05m) from equilibrium andreleased at time = 0. What is the displacement as a function of time?
For a science fair competition, a group of high school students build a kicker-machine that can launch a golf ball from the origin with a velocity of 11.3 m/s, How high will be the highest point of trajectory
What is the stopping distance of the car. What is the initial (horizontal) velocity of the ball.
A light beam is incident on a piece of zircon (n = 1.923) at the Brewster's angle. Find the value of Brewster's angle
A car is designed to get its energy from a rotating flywheelwith a radius of 1.50 m and a mass of475 kg. Find the kinetic energy stored in the flywheel
You measured the speed of sound to be 384.9 m/s. Your lab partner measured it to be 342.2 m/s. What was the percent difference between these values
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