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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?
An object is moving with a constant velocity V1=2i+4j for 5 seconds. It then moves with a constant velocity of V2=-3i=2j for 10 seconds, determine the final velocity vector
A tennis ball rolls off the edge of a tabletop of height 0.850m above the floor and strikes the floor at a point a horizontal distance 1.80 m from the edge of the table. You can ignore air resistance. Find out the time of flight.
Suppose you hear a clap of 4.63 seconds after seeing the lightning stroke. how far are you from the lightning stroke
vector a has a magnitude of 6 m and makes an angle of 28 degrees with the positive x axis. vector b also has a
A transverse wave of wavelenght 0.50m travels along a rope. If the frequency of the wave is 40.0Hz, what is the speed of propagation of the wave
What is the charge on negative electrode. Find out the wavelength.
A protonand an electron are held in place on the xaxis. The proton is at x =–d, while the electron isat x = + d.They are released simultaneously, and the only force that affectstheir motions is the electrostatic force of attraction that eachapplie..
A wire with initial length L0 and radius r0 has measured resistance of 1.0 ohms. The wire is drawn under tensile stress to a new uniform radius of 0.25 r0. What is the new resistance of the wire
An elastic conducting material is stretched into a circular loop of 19 cm radius. It is placed with its planeperpendicular to a uniform 0.600 Tmagnetic field. When released, the radius of the loop starts toshrink at an instantaneous rate of 68cm/s..
A VW Beetle goes from 0 to 95.4 mi/h with an acceleration of +6.68 m/s2. (a) How much time does it take for the Beetle to reach this speed? (b) A top-fuel dragster can go from 0 to 95.4 mi/h in 1.49 s. What is the acceleration (in m/s2) of the dragst..
Two packing crates of masses 10.0 kg and 5.00 kg are connected by a light string that passes over a frictionless pulley. The 10.0 kg crate lies on an incline of angle 40.0° with a coefficient of kinetic friction 0.250.
A piece of cheese with a mass of 1.30kg is placed on a vertical spring of negligible mass and a force constant k= 1600 N/m that is compressed by a distance of 16.2cm. how high does the cheese rise from this initial position
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