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A rocket ship is 45.0 m long according to measurements made in its rest frame, and moves at 0.385c by respect to the Earth. Astronaut Naomi sends a laser pulse from the tail of the rocket to the nose, where it reflects off a mirror, and returns to Naomi. (a) How long does the round trip take, according to Naomi? (b) How long does the round trip take according to Tariq, an observer on Earth?
question a car is moving on a at horizontal circular track of radius 120 m. the speed of the car is constant 15ms . the
A fictional spaceship accelerates at a constant rate of 0.104 m/s2. How long would it take to reach the moon, 4.08 108 m away
A 2.5 meter long elastic cord is fixed at both ends. at what frequency should this cord be vibrated such that a n-10 standing wave is produced
You push your physics book 1.60 along a horizontal tabletop with a horizontal push of 2.80 while the opposing force of friction is 0.550. What is the net work done on the book
A bullet of mass 6.3 g is fired horizontally into a 1.2 kg woodenblock at rest on a horizontal surface. The coefficient of kineticfriction between block and surface is 0.25.
It then increases it's speed at the rate of 1.55 m/s2. Find out the magnitude of acceleration under these new conditions. Answer in units m/s2.
at some instant the velocity components of an electron moving between two charged parallel plates are vx1.5x105ms and
A thin 12 cm long solenoid has a total of 490 turns of wire and carries a current of 1.9 A. find the magnitude of the field inside near the center.
a glass bottle of soda is sealed with a screw cap. the absolute pressure of the carbon dioxide inside the bottle is
three liquids are at temperatures of 10 degrees c 20 degree c and 30 degrees c respectively. equal masses of the first
A 4.60-g lead bullet traveling at 320 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A 42.0-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 345 N. Find the child's speed at the lowest point
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