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A 70-kg climber is hanging by a rope off the edge of a cliff, with the top end of the rope tied to a 200-kg rock. However, the rock is sitting on an icy horizontal surface, and it begins to slip towards the edge of the cliff with acceleration 1.0 m/s2. What is the coefficient of friction between the rock and the icy ground, assuming there is no friction between the rope and the edge of the cliff?
A square loop of wire encloses area A1. What is the magnetic flux through loop A1
A steel ball is dropped onto a concrete floor. Over and over again, it rebounds to its original height. Is the motion simple harmonic motion
A piece of wood is 6.00 m long, 0.260 m wide and 0.060 m thick. Its density is 600kg/m cubed. What volume of iron ( P iron = 7.8 x 10 cubed kg/m cubed) must be fastened underneath the wood to sink it so that the top surface of the wood is just even w..
What is the flux of Zn moving down the rod? Write down all your assumptions (hint: you will need to look up the density of copper. You do not need to account for the variation in density with alloy composition). Clarify what the boundary conditions w..
In a classical model of the hydrogen atom, the electron orbits a stationary proton in a circular orbit
Electrons are accelerated from rest through a potential difference of 350 V and then enter a uniform magnetic field that is perpendicular to the velocity of the electrons. Estimate the period of this circular path
A 51.1 kg bungee jumper jumps off a bridge and undergoes simple harmonic motion. what is the spring constant of the bungee cord
An astronomer observes a comet and measures the wavelength of the H? line to be at 486.2 nm. In the lab, the line is found to be at 486.1 nm. What is the Lorentz factor for the comet
A certain gasoline engine has an efficency of 30% what would the hot resevoir temp be for a carnot engine having that efficency if it operates with a cold resevoir temp off 200C
A bottle containing 2 kg of water at a temperature of 15°C is placed in a refrigerator where the temperature is kept at 4°C.
A bucket filled with dirt of mass 20 kg is suspended by a rope that hangs over a pulley of mass 30 kg and radius 0.25 m. What is the speed of the bucket
Standing on ground 3.5 from the wall of a building, you want to throw a package from your 1.6 shoulder level to someone in a second-floor window 4.5 above the ground.
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