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You are riding on a train that moves at 34 m/s. You approach an identical train that is stationary on the tracks next to you. If you hear the other train's horn at 990 Hz, what is the actual frequency of the horn?
Construct the lagrangian L(Φ,Θ;Φ,Θ) and write Lagrange's equations for Φ and Θ incorporating the constraint Θ =Θo= arcsin (a/b) with a Lagrange multiplier λΘ.
What is the force on a test charge Q at the center.
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
question two large parallel plates are separated by 0.90cm and carry uniform charge densities equal in magnitude and
The beams have a wavelength of 600 nm outside the slabs, and the slab is d = 1.30 microns thick. If the top half of the slab has index of refraction 1.70 and the bottom has index 1.45, by what time interval will one of the beams be ahead of the ot..
A 2 kilogram shell is fired from a tank with a force of 500 Newton. Determine what is its acceleration
A seasoned mini golfer is trying to make par on a tricky hole #5. The golfer can complete the hole by hitting the ball from the flat section it lays on, at what speed must the golfer hit the ball to land the ball in the hole
A ball with a mass of 0.620 kg is initially at rest. It is struck by a second ball having a mass of 0.370 kg, find the change in the total kinetic energy of the two balls
Two tiny, spherical water drops, with equal charges of -4.00 x 10-17 C, have a center-to-center separation of 1.4 centimeter. Find the magnitude of electrostatic force acting between them
Here is a displacement-time graph of an object which is not moving with simple harmonic motion. But it is still an oscillation and it has a period. period of oscillation
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 790-kg car traveling with a velocity of +2.15 m/s. What is the final velocity of each vehicle?
a runner hopes to complete the 10000-m run in less than 30.0 min . after running at constant speed for exactly 27.0 min
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