Physics question and answers for June 01, 2024
- Q A package with a mass of 45.0 kg slides down a smooth ramp with negligible friction. The package starts from rest and has a speed of 2.20 m/s at the...
- Q You push a 67 kg box across a floor where the coefficient of kinetic friction is = 0.55. The force you exert is horizontal. How much power is needed to...
- Q Force F? does 5 J of work in 10 seconds, force F2 does 3 J of work in 5 seconds, force F3 does 6 J of work in 18 seconds,...
- Q If the lift has a length of 3050 m and makes an angle of 13.5 with the horizontal, what is the change in the gravitational potential energy of the skier-...
- Q A 70 kg bicyclist rides his 9.8 kg bicycle with a speed of 13 m/s. You may want to review How much work must be done by the brakes to...
- Q An object of mass m is at rest at the top of asmooth slope of height h and length L. Thecoefficient of kinetic friction between the object andthe surface, ,...
- Q Emily exerts a force of 30 N on the paint-ing in the direction she travels as she firstcarries it 15 m on a level sidewalk and thenclimbs 1.5 m up...
- Q After hitting a long fly ball that goes over the rightfielder's head and lands in the outfield, the batterdecides to keep going past second base and try forthird base. The...
- Q James helps his dad put the 250-Newton lawn mower in the back of his dad's truck. They lift the mower up from the ground to the truck bed, which is...
- Q Initially sliding with a speed of 4.5 m/s, a 2.0 kgblock collides with a spring and compresses it0.27 m before coming to rest.What is the force constant of the spring?Express...
- Q A 67-kg base runner begins his slide into second base when he is moving at a speed of 3.7 m/s. The coefficient of friction betweenhis clothes and Earth is 0.70....
- Q A weight lifter lifts a 360-N set of weights from ground level to a position over his head, a vertical distance of 2.10 m. How much work does the weight...
- Q A 59.5-kg runner has a speed of 3.40 m/s at one instant during a long-distance event.(a) What is the runner's kinetic energy at this instant?(b) If he doubles his speed...
- Q If the kinetic energy of a particle is quintuple, by what factor has its speed increased?
- Q A block of mass m slides from rest down a frictionless inclinedplane that has a height, h, as shown. The speed, v, of the block atthe bottom of the plane...
- Q Consider lifting a box of mass m to a height h using two different methods: lifting the box directly orlifting the box using a pulley (as in the previous part).What...
- Q If you pull for a half hour or a whole hour on a wagon but it doesn't move,Select one:O a. it is impossible to determine how much work is done.O...
- Q A logger drags a heavy log across level ground by attaching a cable from the log to a bulldozer. Thecable is inclined upward from horizontal at an angle of 20....
- Q A 1.0-kg mass is fired from a compressed horizontal spring (k = 1.0 X 103 N/m) across a frictionless floor and up a frictionless ramp. If the initial compression of...
- Q A 25-kg crate is dragged across a level floor for a distance of 10 m by a constant horizontal force of 100 N. The amount of work done by the...
- Q Anobject with charge q = -5.00x10-9 C is placedin a region of uniform electric field and is releasedfrom rest at point A. After the charge has moved topoint B, 0.500...
- Q A 2.75-g copper coin at 17.5C drops 40.0 m to the ground.(a) Assuming 55.0% of the change in gravitational potential energy of the coin-Earth system goes into increasing the Internal...
- Q A block of mass 3.80 kg is placed against a horizontal spring of constant k = 805 N/m and pushed so the spring compresses by 0.0650 m.(a) What is the...
- Q A monkey carries a coconut of mass 0.9 kg to a height of 4.6 m. Calculate the potential energy of the coconut and the work done by the monkey against...
- Q A 164 g mass lying on a frictionless table is attached to a horizontal spring with a spring constant of 364 N/m. The spring is stretched a distance of 79...
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