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When solving physics problems, how do you decide whether or not to use the conservation of momentum, conservation of energy or work-energy principle? How do you identify whether or not a problem is involving conservative or non-conservative forces?
A 3.50 gram bullet is fired horizontally at two blocks resting on a smooth surface. Evaluate what is the initial speed of the bullet
a glass vial filled with mercury vapor 4.88 ev between ground state and first excited state is placed between the
q1. a 51-kg person on skis starts from rest down a hill sloped at 32deg from the horizontal. the coefficient of
A transverse wave on a string is described by the wave function y = A0sin(kx + ωt) where A0 = 0.425m, k = 0.895rad/m, Calculate the transverse speed of the element
An ambulance moving at 37 m/s sounds its siren whose frequency is 500 Hz. What frequency does a person in the car hear as the ambulance approaches the car
question in the 1950s an experimental train that had a mass of 2.00 104 kg was powered across a level track by a jet
A uniform rope of mass m and length L is hanging straight down from the ceiling. A small-amplitude transverse wave is sent up the rope from the bottom end. Derive an expression that gives the speed v of the wave on the rope in terms of the distanc..
A brand of earplugs reduces the sound intensity level by 28dB. By what factor do these earplugs reduce the acoustic intensity
A football game begins with a kickoff in which the ball travels a horizontal distance of 45 yd and lands on the ground. what is the initial speed of the ball in this case
A 1-m-tall barrel is closed on top except for a thin pipe extending 5 m up from the top. What is the pressure on the bottom when water is added to fill the pipe to its top
Determine the angular momentum of the Earth about its rotation axis (assume the Earth is a uniform sphere)
A uniformly charged wire or radius R1=0.02m runs down the axis of a cylinder of inner radius R2=0.06m. Find the electric field at the surface of the wire
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