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Q. A delivery clerk carries a 34 N package from the ground to the 5th floor of an office building, a total height of 15 m. How much work is done by the clerk?
Q. What average force is needed to accelerate 7 gram pellet from rest to 125 m/s over a distance of .8 m along the barrel of a rifle?
What is the target's speed just after the bullet emerges.What is the velocity v of the smaller fish before lunch.
Estimate the force P to accelerate the 80 - Ib block at 6ft/sec2 to the right.
A heavy rope used for as a mooring line for a cruise ship sags a shown. If the mass of the rope is 96 kg, what are the tensions in rope at A and B.
Consider a rotational axis at point where the tire contacts the ground, directed vertical to the plane of the paper. Find out the magnitude of the man's force for both designs.
A 3.2 kg block of wood sits on a table. A 3g bullet, fired horizontally at a speed of 490 m/s, goes completely through the block, emerging at a speed of 250m/s. What is the speed of the block immediately after the bullet exits.
Determine the maximum horizontal force that can be applied to the block before it slips.
A 100 block on a frictionless table is firmly attached to one end of a spring with = 27 . The other end of the spring is anchored to the wall. A 22 ball is thrown horizontally toward block with a speed of 5.5.
Estimate the electric field at a point 2.40 cm perpendicular to the midpoint of a uniformly charged 2 m-long thin wire carrying a total charge of 4.10 microC.
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
A ball has fallen to the street below, and a passerby returns it by launching it at an angle of 53.0° above the horizontal at a point 26.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall.
Which of the following must be true if we are to infer (calculate) a star's luminosity directly from the inverse square law for light.
One mole of an ideal gas does 1408 J of work on the surroundings as it expands isother- mally to a final pressure of 1.6 atm and vol- ume of 29L. Find out the initial volume.
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