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A semi-trailer is coasting downhill along a mountain highway when its brakes fail. The driver pulls onto a runaway truck ramp that is inclined at an angle of 15.0° above the horizontal. The semi-trailer coasts to a stop after traveling 160 m along the ramp. What was the truck's initial speed? Neglect air resistance and friction.
If the system is stopped, how much hanging mass would be required to bring the rotating mass to the same position.
A merry-go-round with, radius 3 m rotates freely with an angular speed of 2/pi rev/s. Its kinetic energy is 4000 J. What is the final angular speed of the merry-go-round and the person after the person jumps on
An electron and a proton each have a thermal kinetic energy of 3×kBT/2. Compute the de Broglie wavelength of each particle at the temperature of 2050 K. (kb is Boltzmann's constant, 1.38×10-23 J/K).
It is possible to make a thermometer by sealing gas in a rigid container and measuring the absolute pressure. What is the temperature of this sample
A 125 g wire is held under a tension of 218 N with one end at x = 0 and the other at x = 12.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 12.0 m. At time t = 25.5 ms, pulse 2 is sent along the wire from the end at x = 0. A..
If a curve with a radius of 83 m is properly bamked for a car traveling 70 km/h, what must be the coefficient of static friction for a car not to skid
A step down transformer produces a voltage of 5.3 V across the secondary coil when the voltage across the primary coil is 100V. What voltage appears across the primary coil
A major league pitcher can throw a baseball in excess of 42.9 m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 18 m away from the point of release.
Two waves have the exact same frequency, wavelength, and amplitude. They are both travelling in the +x direction, What is the phase difference between the two waves.
A 0.2kg steel ball is dropped straight down onto a hard horizontal floor and bounces straight up. Determine the magnitude of the impulse delivered to the floor by the steel vessel
Consider a uranium nucleus to be a sphere of radius R = 7.4x10^-15 m with a charge of 92 e distributed uniformly throughout its volume. What is the electric force exerted on an electron
To complete your master's degree in physics, your advisor has you design a small, linear accelerator capable of emitting protons, What the average power must be delivered to the stream of protons
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