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A student throws a 0.140kg ball straight upwards to a height of 7.20 m. How much work did the student do? _______ J
A 33.8 kg child starting from rest slides down a water slide with a vertical height of 20.2 m.
1) What is the child's speed halfway down the slide's vertical distance? ___m/s
2) What is the child's speed three-quarters of the way down? ____m/s
How much longer must the minimum length of a plane mirror before a 6 ft 1 in man to see his complete head-to-toe image than for 5ft 5 in woman to do so? ____in
A 4-W night-light is plugge into a 120-V circuit and operatescontinuously for 1 year. Find the energy consumed in a year
find the non-zero Christoffel symbols and the equations, of the geodesic, for the two dimensional case of move-ment on the surface of a cylinder of radius and show that the transformation is an invariance transformation by finding the function A
A rocket accelerates upwards from rest at 20 m/for 4 seconds then its engine shuts off. find the maximum height reached by the rocket
A ball rolling on a table has a velocity with rectangular components vx = 0.50m/s and vy = 0.60m/s. What is the direction of the balls displacement
A drunk driver in a 2300kg car plows into a 2100kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 20m before stopping. If the effective coefficient of friction is 0.68, how fast was the drunk goi..
Find out the normal force exerted on the crate by the elevator.
A cylindrical copper rod and an iron rod with exactly the same dimensions are welded together end to end. What is the temperature at the midpoint where the rods are joined together
If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.95 T field (perpendicular to the wire), what force is exerted on this segment of wire
If the displacement of a harmonic oscillator is given by y= 3.5 sin(10t), where the units of y are meters and t is measured in sec. Evaluate what is the frequency
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. What is the mass of the heaviest rock that, in perfectly still water, won't sink the plastic boat
a lens with a focal length of 15cm is placed 50cm in front of a lens with a focal length of 5cm. how far from the
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 12.0 s. Ignore air resistance. What is the average mechanical power output of the engine
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