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A 2.00×104 kg railroad car is rolling at 3.00 m/s when a 7000 kg load of gravel is suddenly dropped in. What is the cars speed just after the gravel is loaded? please answer in m/s
A 58-kg water skier is being pulled by a nylon tow rope that is attached to a boat. What is the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
q1. stationary bicycle is raised off the ground and its front wheel m 1.3 kg is rotating at an angular velocity of
The system is released from rest, and the string moves without slipping over pulley. If the larger mass is traveling at a velocity of 2.25 m/s when it has dropped 1m, how much mechanical energy was lost due to friction in the pulley's axle.
A wooden board that is 50 cm long, 20 cm long, and 4 cm thick is floating in water. Rocks are then carefully placed on the top face of the board until the top of the wood just slips below the water surface. The density of water is 1000 kg/m^3 and ..
A horizontal power line of length 52 m carries a current of 1.4 kA, find direction of the magnetic force on the power line
An electron is orbiting a proton under the Coulomb force in a hydrogen atom at a radius of 0.52 × 10-10 m
Having grown tired of hearing loud music from passing cars at 3 am and the boisterous yelling of bar patrons at closing, If her new home is 2.8 km from the freeway, what's the intensity level there
Determine the differential equation of motion for the damped oscillations and find the time (in term of M) it takes for the system to settle down to oscillations of only 25% of the initial amplitude; (4')
The length of the mercury column at the ice point and steam point are 5.0 cm and 40.0cm respectively. What is the temperature of the liquid
When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). find the mass of the ball
A light spring-gun projectile launcher is mounted on an 0.593 kg air track glider. compute the speed of the air-track glider after the gun is fired
The average intensity of sunlight reaching the earth is 1390 W / m2. A charge of 2.00 x 10^-8 C is placed in the path of this electromagnetic wave. What is the magnitude of the maximum electric force that the charge experiences
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