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A sledge loaded with bricks has a total mass of 19.0 kg and is pulled at constant speed by a rope. The rope is inclined at 20.0° above the horizontal, and the sledge moves a distance of 20.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.550.(a) What is the tension in the rope?N(b) How much work is done on the sledge by the rope?J(c) What is the increase in internal energy in the sledge and the surface due to friction?
Two blocks (M1 = 2.75 kg and M2 = 6.49 kg) are in contact on a frictionless, horizontal tabletop. What is the contact force between the blocks
Steam is expanded from 12.5 MPa and 900 degrees Celsius to 0.30 MPa, 400 degrees Celsius in an adiabatic turbine. Determine the isentropic efficiency of this turbine
A space station in the forf of a large wheel, 129m in diameter, rotates to provide an "artificial gravity" of 6.10 m/s^2 for people located at the outer rim.
A charge of -2.655uC is located at (2.660m , 4.621m ), and a charge of 1.495uC is located at (-2.574m , 0). Find the electric potential at the origin
An object of mass m attached to a spring of force constant k oscillates with simple harmonic motion. What is the object's velocity when its potential energy is 2/3 E
A hammer strikes one end of a thick iron rail of length 5.83 m. A microphone located at the opposite end of the rail detects two pulses of sound, Which pulse reaches the microphone first
A 3.8kg block of wood sits on a table. A 3.0 g bullet, fired horizontally at a speed of 450m/s , What is the speed of the block immediately after the bullet exits
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. What distance did the dog run
question1a house painter stands 3.0 m above the ground on a 5.0-m-long ladder that leans against a wall at a point4.7 m
A horse pulls a 300 kg wooden sleigh in the snow via a massless rope. The sleigh is towing a 50 kg wooden box behind it via another massless rope. What is the acceleration of the sleigh
A constant horizontal force Fa pushes a 1.50kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. gives package's x and y velocity components versus time t.
13 of nitrogen gas at STP are compressed in an isochoric process to a pressure 20. What is the heat input to the gas
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