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a horizontal circular platform rotates counterclockwise about its axis at the rate of 0.805 rad/s. You, with a mass of 67.3 kg, walk clockwise around the platform along its edge at the speed of 1.07 m/s with respect to the platform. Your 20.1-kg poodle also walks clockwise around the platform. Your 18.5-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 a mass of 91.9 kg and radius 1.87 m. Calculate the total angular momentum of the system.
At rest, a car's horn sounds at a frequency of 410 Hz. The horn is sounded while the car is moving down the street. What is the speed of the car
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
A 16.5 kg gold bar at 26.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C
At 20C and 750 torr pressure, the mean free paths for argon gas(Ar) and nitrogen gas(N) are lambdaAr = 9.9 x 10^-6 cm, What is the mean free path of argon
Two identical spheres are placed with centers 0.25 m apart, one is given a charge 20nC and the other-36nC, what will be the electric force each exerts on the other
A continuous stream of water runs from the faucet into a kitchen sink, picking up speed as it falls. What is the diameter of the flow tube of water
A patient is going to be prescribed bifocals which will be 3.20 cm from the eye, Without the bifocals, what is the patient's near point
A quarter circle of electric charge with a radius of 2.5 m has a uniform charge density of +0.7x10^-6 C/m. At the center of the circle
A block of unknown mass, m, is brought into the configuration shown. It was measured that upon release the block shot upward a maximum distance of 2m. Calculate the mass of this block? The upper spring has a natural length of 1m, and the lower spr..
The plates of a parallel-plate capacitor are 3.00mm apart, and each carries a charge of magnitude 77.0nC. The plates are in vacuum. What is the area of each plate
A solenoid 10.0 cm in diameter and 75.4 cm long is made from copper wire of diameter 0.100 cm, What power must be delivered to the solenoid if it is to produce a field of 7.60 mT at its center
What is the unknown charge at x = +0.19 m in micro-coulombs? If negative, indicate so with a negative sign, but omit a sign if positive.
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