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If you are riding on a train that speed past another train moving in the same direction on an adjacent track, it appears that the other train is moving backward. Why?
What is the distance between the centers of the two slits? Describe answer in m.
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. What is the total mass of the wire
An aluminum-alloy rod has a length of 10.009 centimeter at 19.800°C and a length of 10.016 centimeter at the boiling point of water. Determine the length of the rod at the freezing point of water
A heavy steel ball is hung from a cord to make a pendulum. The ball is pulled to the side so that the cord makes a 5 degree angle with the vertical. what force is required to hold the ball
While the microphone is inside the tube it may be at the center or close to the wall. How would it affect the measurement
A photon with a wavelength 4.40 scatters from an electron initially at rest. Find out the wavelength of the scattered photon when the scattered electron has its utmost kinetic energy. Kmax = 2.37*20^-14.
A U-tube is open to the atmosphere at both ends. How much higher is the top surface of the oil on that side of the tube compared with the surface of the water on the other side of that tube
A roller coaster car starts from rest at the top of a hill of height h. The car rolls without friction down the hill under the influence of gravity, What is the minimum height h that the roller coaster has to start at in order to stay on the track
A 0.029-kg bullet is fired vertically at 225 m/s into a 0.15-kg baseball that is initially at rest. How high does the combined bullet and baseball rise
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, twelve years have elapsed on earth, and 9.2 years have elapsed on board the ship. How far away (in meters) is the planet according to t..
If a hydrogen atom is initially in the first excited state,what is the longest wavelength of light it will absorb? What is the shortest wavelength of light it will absorb?
A Carnot engine absorbs 4.65×103 J from the hot reservoir and expels 3.12×103 J to the cold reservoir during each engine cycle. what is the temperature of the hot reservoir
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