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A ladder of weight 200N and lenght 10 meters leans against a smooth wall (no friction on wall). A firefighter of weight 600N cimbs a distance x up the ladder. The coefficient of friction between the ladder and the floor is 0.5.What is the max value of x if the ladder is not to slip?
The Dyson sphere is an hypothetical spherical structure centered around a star. Inspired by a science fiction story, What is the net gravitational force Fin on a unit mass located on the inner surface of the Dyson sphere described in Part A
A bicycle is moving at a speed v = 4.26 m/s. If the radius of the front wheel is 0.450 m, how long does it take for that wheel to make a complete revolution.
If 22.0g of the metal gallium melts in your hand, what is the change in entropy of the gallium in this process? What about the change in entropy of your hand
Jupiter has a radius of 71,492km and a mass of 1.9x10^27 kg. Jupiter's moon has a mass of 9x10^22kg and orbits at a distance of 422x10^3km
two long parallel wires separated by a distance d each carry a constant electric current i. find an expression for the
Using m=mo/(1-v^2/c^2)^(1/2) to describe the special relativistic effects on an electron orbiting with a speed v in an atom, estimate the percentage correction to the n=1 energy in a hydrogen atom or a uranium atom.
When a tuning forkof frequency 500 Hz is held above a tube, resonances are foundwhen the water level is at distances 16.0, 50.5, 85.0, and 119.5 cmfrom the top of the tube. (a) Find the speed of sound in air.
Two particles of masses m and 3.00m are moving toward each other along the x-axis with the same speed v. They undergo a head on elastic collision and rebound along the x- axis. Find out the final speed of the heavier object.
in the relativistic heavy ion collider in brookhaven ny physicists are attempting to recreate the conditions of the big
What is the angular displacement, angular velocity and angular acceleration of the second hand on a clock over the time interval in which it moves from the 12 to the 6
If you lie on the ground at night with no cover, you get cold rather quickly. Much of this is due to energy loss by radiation. Estimate the net rate at which your body loses energy by radiation to the night sky under these conditions
A stuntman drives a car (without negative lift) over the top of a hill, What is the greatest speed at which he can drive without the car leaving the road at the top of the hill
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