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You have a grindstone ( a disk) that is 84.0 kg, has a .307-mradius, and is turning at 104.0 rmp, and you press a steel axe against it with a radial force of 19.6 N. Assuming the kinetic coefficient of friction between steel and stone is 0.168, calculate the angular acceleration of the grindstone.
How many turns wil the stone make before coming to rest?
Consider a regular hexagon of side length, L = 10cm. A charge, Q = 2µC, is located at each vertex, Find the electric field vector at the center
Evaluate the electrostatic energy of two opposite charges
A low-power laser used in a physics lab might have a power of 0.55 mW and a beam diameter of 2.6 mm. Calculate the average light intensity of the laser beam
A low-power laser used in a physics lab might have a power of 0.40 mW and a beam diameter of 2.6 mm. Calculate the average light intensity of the laser beam
find the mass of Earth from the period T and the radius r of the Moon's orbit about the Earth. T=27.3 days and r=3.82E5 km. suppose the Moon orbits the center of Earth rather than the center of mass of the Earth-Moon system.
Consider the particle that is constrained to move along a curve described by y = x4. Find the equation of motion for small displacement about equilibrium
Find the strength of the magnetic field that causes a torque of 2.09 × 10-5 N·m to act on the loop when a current of 0.00361 A flows in it
A particle moves along the x axis. Its position is given by the equation 2.00 + 3.00t - 4.00t^2 with x in meters and t in seconds. Find out (1) its position at the instant it changes direction and (2) its velocity when it returns to the position i..
Certain criteria have been met which suggest that an intangible asset has been created. Illustrate w hat amount should be recognized as research and development expense in 2011 using U.S. GAAP?
You are standing 4.5m from a convex security mirror in a store. You estimate the height of your image to be half of your actual height. Estimate the radius of curvature of the mirror
The K-shell ionization energy of iron is 8500 eV, What is the wavelength of Kalpha X-rays emmited by iron
A car starts from rest and accelerates at a rate of 2m/s^2 until it reaches the speed fo 30m/s. find number of revolution each wheel completes up to this point
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