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A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.869 rad/s. You, with a mass of 68.3 kg, walk clockwise around the platform along its edge at the speed of 1.05 m/s with respect to the platform. Your 20.9-kg poodle also walks clockwise around the platform, but along a circle at half the platform\'s radius and at half your linear speed with respect to the platform. Your 17.1-kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform\'s radius from the center. Model the platform as a uniform disk with mass 90.3 kg and radius 1.93 m. Calculate the total angular momentum of the system.
A flat circular disk of radius R is uniformly charged withtotal charge Q. What is the magnetic fieldstrength at the center of the disk
A person with perfect pitch sits on a bus bench listening to the 445 Hz horn of an approaching car. If the person detects the frequency of 488 Hz, how fast is the car moving.
The total kinetic energy in one mole of nitrogen is 4,000 J. what is the root mean-square velocity of an individual particle in the ideal gas
The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it is 0.0045 (C°)-1. what is the percentage increase in the resistance in a tungsten wire
What is the peak emf of the generator when its coil rotates at a frequency of 50 Hz? Find out the frequency of the coil's rotation when the peak emf of the generator is 163 V.
The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves 236 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
Suppose 60kW is to be transmitted over two 0.150? lines, Estimate how much power is saved if the voltage is stepped up from 200V to 2000V
An object is so = 2 m from the front side of a converging lens with focal length f1 = 1 m, Draw a ray diagram of the situation, Where is the final image now, What is the new magnification
A car travelling at 120 strikes a tree. The front end of the car compresses and driver comes to rest after travelling 0.900.
An 84.4-mH inductor and a 6.27-µF capacitor are connected in series with a generator whose frequency is 361 Hz. Determine the rms voltage across the inductor
An 84.6-kg climber is scaling the vertical wall of a mountain. His safety rope is made of nylon that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
In order to manufacture these coffee tables, the company would need to incur $525,000 in fixed costs for new equipment. Calculate the break-even point of the coffee tables in units sold.
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