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A 1/2 kg snowball moving 20 m/s strikes and sticks to a 70 kg man standing on a frictionless frozen pond. What is the man's final velocity?
A 1000 kg experimental rocket sled on a level frictionless rail is loaded wiht 50kg of propellant. It exhausts the propellant in a 20-s "burn". If rocket, initially at rest, moves at 150m/s after the burn, what impulse is experienced by the rocket..
A microscope by a tube length of 200 achieves a total magnification of with a objective and a eyepiece. The microscope is focused for viewing by a relaxed eye. How far is the sample from the objective lens?
pat builds a track for his model car out of wood. the track is 7.00 cm wide 4.00 m long and 1.78 m high and is solid.
The RLC circuit below is being driven by an AC source with a frequency of 47.77 Hz resulting in a maximum current Imax = 0.25 amps. Calculate the impedance of this circuit.
calculate the overall magnification of a compound microscope that uses an objective lens with a focal length of 0.50 cm
A student stands do = 2.8 m in front of a floor-to-ceiling mirror. Her eyes are he = 1.41 m above the floor and she holds a flashlight at a distance hf = 0.8 m above the floor. Randomized Variables do=2.8m he=1.41 m hf=0.8m. Calculate the angle θ, in..
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 405 m/s. What is the temperature (in Kelvin) of the environment
The angle of incidence at a solid/liquid boundary is 86.2°, andthe index of refraction of the solid is n = 1.61.(a) What must be the index of refraction of theliquid such that the direction of the light entering the liquid isnot changed?
A mass of 7 kg is placed on an incline with friction and no additional forces acting on it and it begins to slide at some angle when the angle is slowly
In a certain reference frame, a particle with momentum of 7 MeV/c and a total energy of 10 MeV. What is the relative speed of the two reference frames
question1a person lifts a 3.60 kg textbook with a 52.0 n force at a 60 degree angle from the horizontal. sketch a
Show that the average energy of vibration decays according to the law : E= Eo × exp(-2bt).
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