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Two firecrackers explode at the same place in a laboratory and are separated by a time of 3 years as measured on the laboratory clock.
a. What is the spatial distance between these two events in a rocket frame in which the events are separated in time by 5 years as measured by rocket clocks?
b. What is the relative speed of the laboratory and rocket frames?
A 0.360 kg mass is attached to a spring with a force constant of 25.9 N/m, Calculate the speed of the mass
a) At what angle (in degrees) should this strip be placed to yield an apparent focal spot size 2.5 mm x 1.5 mm. b) Using this size target, what angle is required to obtain a 2.5 mm x 2.5 mm apparent focal spot
A 218.3 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. What is the velocity (speed) of the satellite
A crate of mass 10.2 kg is pulled up a rough incline with an initial speed of 1.60 m/s. What is the change in kinetic energy of the crate
A bullet is fired through a board, 14 cm thick, with a line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s, what is the bullets acceleration
A 35.0-g bullet moving at 475 m/s strikes a 3.2-kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 225 m/s. How fast is the bag moving while the bullet exits.
Capacitors C1 = 5.0 µF and C2 = 2.0 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
Assuming that the distance between the Earth and the Sun is approximately 1.5E11 m, the mass of the sun is 1E31 g, how long do we have before the sun runs out of fuel
How long did it take for a message sent from Earth to reach the first astronauts on the way to the moon when they were still 12100 km away from the moon
Coherent light with wavelength 400 nm passes through two very narrow slits that are separated by 0.200 mm, What is the width (in mm ) of the first-order bright fringe
A 3500 kg block falls vertically through 5 m and then collides with a 400 kg pile, driving it 3.0 cm into bedrock. Assuming that the block-pile collision is completely inelastic, find out the magnitude of the average force on the pile from the bed..
A string is rolling several rolls about a solid sphere, and then the sphere leaved to fall from the end of the string. What is the acceleration of the center of the sphere
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