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When two sticks are laid end-to-end they cover a length of 8.32 feet. One stick is 2.90 ft longer than the other. What is the length of the shorter stick in feet?
On the Moon\'s surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. What is the difference in travel time for light that travels only through space to the moon and back and light that travels through..
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.80 m, Determine the current in the rods
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 2.0 cm and released. If the spring constant is 85 N/m, what is the magnitude of spring force acting on the toy at the moment i..
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
An object is placed 53.0 cm from a screen. Find the magnification of the lensmagnification if placed at the shorter distance magnification if placed at the farther distance
The intensity (in W/m2) of one sound is 5.46 times as great as the intensity of another sound. what is the intensity level of the louder sound
A tuning fork vibrating at 516 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork while waves with a frequency of 489 Hz reach the release point? Take the speed of sound in air to be 340 m/s.
Airplane A , starting from rest with constant acceleration, requires a runway 600{\rm m} long to become airborne.
What are the rocket's horizontal range, greatest height, and total time of flight. The magnitude of the torque of this force on the door with respect to the hinge is most nearly .
A body is placed on a plane that is incline at an angle of 35degrees to the horizontal, Determine the component of mg parallel to the surface
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. An extra mass m = 4.2 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coeffic..
Car Circles a Track. The 1,000 kg car is moving at the maximum speed it can without skidding off of the 50 m-radius, what is this maximum speed
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