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A 100 kg person is 3/4 three fourths of the way up a 10 meter ladder that is resting against a smooth friction less wall. The ladder has a mass of 25 kg and creates an angle of 60o with the surface
1. Compute the normal force of the wall on the ladder?
2. Compute the normal force of the floor on the ladder?
q1. as a new mechanical engineer for engines inc. you have been assigned to design brass pistons to slide inside steel
a boat moves through the water of a river at 8 ms relative to the water regardless of the boats direction. if the water
Ball 1, with a mass of 150 g and traveling at 15 m/s , collides head on with ball 2, which has a mass of 350 g and is initially at rest. What are the final velocities of each ball if the collision is perfectly elastic
The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s. If the displacement of the blood during theacceleration is +1.6 cm, determine its acceleration (incm/s2). How much time does blood take to reach its final velocity?
A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of 87.5 dB. What is the combined sound level
A 3.0 cm tall statue is 48 cm in front of a biconvex lens (focal length 20 cm), how high is the image
In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. The inhabitants of this ring world live on the starlit inner surface of the ring, What is the length of a year on this planet
Consider an electron in the ground state of the hydrogen atom, separated from the proton by a distance of 0.0529 nm
A ball is shot from the ground into the air. At a height of 8.6 m, the velocity is observed to be v = (8.1)i + (5.3)j in meters per second (i horizontal, j upward). To what maximum height will the ball rise
A length of aluminum wire is connected to a precision 10.0 V power supply, and a current of 0.4258 A is precisely measured at 10.0 degrees celsius, What is the unknown temperature
A sphere of radius 1.0 cm is dropped into a glass cylinder filledwith a viscous liquid. The mass of the sphere is 12.0 g and thedensity of the liquid is 1200 kg/m3. The sphere reaches a terminalspeed of 0.15 m/s. What is the viscosity of the liquid?
A solenoid 3.0 cm long consists of 3921 loops of wire. If the magnetic field inside the solenoid is 4.0 T, what is the magnitude of the current that flows through it
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