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A 10.0 meter long, 200N ladder rests against a wall frictionless. The angle between the floor and the ladder is 62.2o. A person with a mass of 80kg climbs the ladder. Determine the coefficient of friction if the person stops 6.00 meter up the ladder.
A spherical balloon has a radius of 8.45 m and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of balloon have a mass of 1300 kg? Overlook the bouyant force on the cargo volume itself.
Calculate the direction of the average force on the ball during the contact . The magnitude of the average force is 4700N
A meter stick is suspended from one end (I = 1/3 mL^2) and oscillates freely with small amplitude. Find the length of a simple pendulum that would have the same period of oscillation as the meter stick.
A bat is pursuing an insect and using echolocation of 60-kHz sound waves to track the insect. find the difference in the two echo times the bat measures
Light of wavelength 540 nm is diffracted by a grating ruled with 1000 lines/cm. There are a total of 2000 lines in the grating. Find the angular deviation of the third order image.
A 40 cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. how far will a point on the edge of the wheel have traveled in this time. what is the ratio of the new force to the old force.
A small solid sphere, with radius 0.25 cm and mass 0.70 g rolls without slipping on the inside of a large fixed hemisphere with radius 23 cm and a vertical axis of symmetry. What is its kinetic energy at the bottom
you have three 3.0 uf micro farads capacitors. two of the capacitors are in parallel and this parallel combination is
A 32.8 g piece of aluminium at 72 is dropped into a cavity in an extremely large block of ice at 0. How much ice mice does aluminium piece melt.
Two objects attract each other gravitationally with a force of 3.1×10?10N when they are 0.45m apart. One of the object has a mass of 2.0kg. Find the mass of the other object
At a construction site, a 62.0 kg bucket of concrete hangs from a light (but strong) cable that passes over a light friction-free pulley and is connected to an 84.0 kg box on a horizontal roof. Find the friction force on the box
you look through a camera toward an image of a hummingbird in a plane mirror. the camera is 4.10 m in front of the
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