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Two people are standing on a 3.19-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air and like a hovercraft. The two people, the platform and a 3.16-kg ball are all initially at rest. One person throws the 3.16-kg ball to the other, who catches it. The ball travels nearly horizontally. Exclusive of the ball, the total mass of the platform and people is 194 kg. Because of the throw this 194 kg mass recoils. How far does the platform move before coming to rest again?
q1. a solenoid is to be constructed that will have a resistance of 5.00 ohms and produce a magnetic field of 0.0400 t
A rocket, away from all gravitational forces, accelerates upward at an acceleration of 12.8m/s^2. On its main deck is a crate with a mass of 81.6kg. a) How many forces act on the crate? b) Determine the Normal force on the crate, & c) What would the ..
You need to design an industrial turntable that is 50.5 cm in diameter and has a kinetic energy of 0.205 J when turning at 42.0 rpm, What must be the moment of inertia of the turntable about the rotation axis
An airplane at a velocity of 650 miles/hour in a region where the earth's magnetic field is 5x10^-5 Tesla and is nearly vertical. Whats the voltage induced between the tips of the wings of anairplane(70m apart)?
When the afternoon Sun reaches an angle of 30° above the horizon, sunlight ceases to clarify any part of the bottom of the tank. How deep is the tank.
A satellite of mass 6000 kg orbits the Earth in a circular orbit of radius of 9.0*10^6 m (this is above the Earth's atmosphere). Using the momentum principle, find the speed of the satellite in orbit
A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. find the speed of the ball just before it lands.
Two scales on a voltmeter measure voltages up to 21.0 and 30.7 V, respectively. Determine the coil resistance
A skier of mass 100 kg starts from rest and comes down a slope of constant angle 25 degrees with the horizon. What is the length of the slope
A vertically hanging steel wire has the following properties. Length=8.75m, Cross-Sectional area= 0.375 cm cubed. Y=2.10x10^11 Pa, B=1.62x10^11 Pa, S= 0.871x10^11 Pa, Proportional Limit=3.27x10^8 Pa, breaking stress=17.4x10^8 Pa.
a block with a mass of 13.1 g and a charge of 8.37 x 10-5 c is placed in an electric field with x component ex 2.93 x
Consider a system consisting of three masses on the axis. Mass m1 = 1.50kg is at x = 1.40m ; mass m2 at 2.30kg is at = 2.10 m; and mass m3= 3.30kg is at = 2.60 m
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