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A rocket blasts off and moves straight upward from the launch pad with a constant acceleration. After 3.0 seconds the rocket is at a height of 77 m.
A) what are the magnitude and direction of the rocket's acceleration? and
b) what is its the speed at this time?
a laser positioned on a ship is used to communicate with a small two man research submarine resting on the bottom of a lake. How far is the submarine from the side of the ship
What additional experiment can help you decide between these two possibilities.
The centripetal acceleration in a horizontal centrifuge is 75 g's when it is rotating at 2000 rpm, What is the radius of the centrifuge
The electric output of a power plant is 730MW . Cooling water flows through the power plant at the rate 1.30 ×108L/hr. What is the power plant's thermal efficiency
A bicyclist travels in a circle of radius 26.0 m at a constant speed of 9.00 m/s. The bicycle-rider mass is 84.0 kg. Calculate the magnitude of the net force on the bicycle from the road
Find both the position of as a function of time x(t) and the velocity v(t) for the following two forces, assuming the particle is at rest at x=0 and t=0. (assume that Fo, b, and k are constants)
A certain species of ionized atoms produces an emission line spectrum according to the Bohr model, Find the next-to-the-longest wavelength in the series of lines
A student yells across a street at a concrete wall. The student hears an echo 0.500 seconds later. If the speed of sound in air is 343 m/s, what is distance from the student to the wall only.
a series RLC circuit contains a resistor of 20 ohms, a capacitor of 0.75 mF and an inductor of 120mH, what is the rms current operating at its resonance freq.
When spiking a volleyball, a player changes the velocity of the ball from 4.0m/s to -28m/s along a certain direction. what is the mass of the volleyball
one atmospheric pressure corresponds to the height of 0.76 m hg column in a barometer. if water is used instead of hg
A novice skier, starting from rest, slides down a frictionless 33.0° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom
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