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To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch of the tree. He then pulls downward on the free end of the rope with a force of 374 N. Neglect any friction between the rope and the branch, and determine the man's upward acceleration. Use g=9.81m/sec2.
The nucleus of a helium atom contains two protons. In a simple model of this nucleus, What is the electric potential energy of the two protons
A ship sets sail from Rotterdam, The Netherlands, heading due north at 5.00 m/s relative to the water. What is the velocity of the ship
Sam, whose mass is 76.0 , takes off down a 52.0 high, 10.0 slope on his jet-powered skis. The skis have a thrust of 200 . Sam's speed at the bottom is 40.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
Two children pull in opposite directions on a toy wagon of mass 9kg. One exerts a force of 18 N and the other exerts a force of 46 N
q1. the loaded cab of an elevator has a mass of 3.0 x 103 kg and moves 221 m up the shaft in 23 s at constant speed. at
In a circus act at the Ringling Bros. and Barnum Bailey Circus, a human cannonball was fired from a large cannon with a muzzle speed of 87 km/h. How far from the cannon did he land
A conducting rod of length 0.5 m slides along a frictionless table at a constant velocity 1.5 m/s. A uniform magnetic field of 0.75 T is normal to the surface.
A sphere is charged with electrons to ?1 × 10^-5 C. How many electrons make up this charge
A typical ten-pound car wheel has a moment of inertia of about 0.35kg m^2. What is the rotational kinetic energy of the rotating wheel
q1. a car is travelling with a velocity of 88.0 kmh. it accelerates at a constant rate of 20 ms2. if the acceleration
A cube of ice is taken from the freezer at -8.0 and placed in a 113 aluminium calorimeter filled with 306 of water at room temperature of 20.0. The final situation is observed to be all water at 15.0.
A long, solid insulating cylinder of radius R = 1 mm has a uniform volume charge density and a total linear charge density of Lambda = 3:610^ -9 C/m.
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