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A 10- kg uniform ladder, 5.0 m long, is placed against a smooth wall at a height of 3.1 m. The base of the ladder rests on a rough horizontal surface whose coefficient of static friction is 0.40. An 80 kg block is suspended from the top rung of the ladder, close to the wall. Determine the force exerted on the wall by the ladder.
The Achilles tendon is subjected to a large tension stress that results in a strain of 5%. how much does it elongate as a result of this strain
A large steam pipe is covered with 1.7-cm-thick insulating material of thermal conductivity 0.31 J/(s m °C). How much energy is lost every second when the steam is at 185 °C
The ropes in the figure below are each wrapped around a cylinder, and the two cylinders are fastened together. What is the angular acceleration of the cylinders
Two satellites are in circular orbits around a planet that has radius 9.00*10^6 m. One satellite has a mass 68.0 kg, What is the orbital speed of the second satellite
A uniform, solid metal disk of mass 6.50kg and diameter 24.0 cmhangs in a horizontal plane, supported at its center by a verticalmetal wire. You find that it requires a horizontal force of 4.23 Ntangent to the rim of the disk to turn it by 3.34 degre..
A particle of ionizing radiation creates 4900 ion pairs in the gas inside a Geiger tube as it passes through. What minimum energy was deposited
A dentist's mirror is placed 3.1 cm from a tooth. The enlarged image is located 6.3 cm behind the mirror. How is the image oriented relative to the object
You are driving home from school steadily at 94 km/h for 150 km. It then begins to rain and you slow to 63 km/h. You arrive home after driving 3 hours and 30 minutes. How far your hometown from school and what is was your average speed.
A 192-kg satellite is in circular orbit around the Earth and moving at a speed of 4.55 km/s. How much work must be done to move the satellite into another circular orbit
A bat flies toward a wall, emitting a constant sound of frequency 2.00 rm kHz. This bat hears its own sound plus the sound reflected by the wall.
Four uncharged capacitors with equal capacitances are combined in parallel. The combination is connected to a 5.47-V battery, which charges the capacitors. The charging process involves 3.25 × 10-4 C of charge moving through the battery. Find the cap..
The polarizing direction of the first sheet is parallel to the x axis, that of the second sheet is at an angle of 30 degree counter-clockwise from the y axis, and that of the initial third sheet is at an angle of 60 degree
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