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A roller coaster, traveling with an initial speed of 15 meters per second, decelerates uniformly at -7.0 meters per second per second to a full stop. How far does the roller coaster travel during its deceleration?
In a different car, the distance the dummy moves while being stopped is reduced from 0.750 m to 0.270 m, calculate the average force on the dummy as that car stops
When ultraviolet light with a wavelength of 250 nm is incident on a particular metal surface, What is the threshold frequency for this particular metal
Consider an infinite non-conducting plane (sheet) of charge. The sheet has a uniform charge density +3s. Calculate the electric field above and below the plane
Astronauts use a centrifuge to simulate the acceleration of a rocket launch, What is the astronaut's tangential acceleration during the first 20.0s
A copper bar is moved to the right while its axis is maintained in a direction perpendicular to a magnetic field, what is the direction of the magnetic field
A 0.178 kg ball is released from rest at the top of a 57.9 m tall building. Calculate the de Broglie wavelength of the ball
You put your morning coffee in a copper mug. Assuming the coffee is boiling hot (100 *C), what is the temperature of the cup of coffee
A machine that makes transformers can only wind the coils with a single specific number density. what is length of the output coil
A person with perfect pitch sits on a bus bench listening to the 441-Hz horn of an approaching car. If the person detects a frequency of 479 -Hz, how fast is the car moving.
A blue car with mass mc = 547 kg is moving east with a speed of vc = 19 m/s and collides with a purple truck with mass mt = 1327 kg that is moving south with an unknown speed. FIND the magnitude of the initial momentum of the truck
a 10 kg box is pulled for 3.60 m along a level surface by a rope that makes an angle of 37 degrees above the horizontal. Find the work done by each force on the box
A scaffold that weighs 400 N supports two painters, one 500 N and the other 400 N. The reading in the left scale is 800 N. What is the reading in the right hand scale
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