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A disk of radius R and mass M = 10 g is rotating freely about a fixed axis through its center with angular velocity w = 11 rad/s. A spider of mass m = 0.5 g descends onto the disk and goes along for the ride. The moment of inertia of the disk is I = (1/2)MR2.(a) Which principle will allow you to calculate the angular velocity after the spider has landed?(b) Calculate the angular velocity after the spider has landed on the disk.(c) If the spider starts crawling towards the center of the disk, the angular velocity is going to:[1] increase, [2] decrease, or [3] remain the same. Give a short explanation for your answer.
A 3500 kg block falls vertically through 5 m and then collides with a 400 kg pile, driving it 3.0 cm into bedrock. Assuming that the block-pile collision is completely inelastic, find out the magnitude of the average force on the pile from the bed..
There are two protons of a helium atom seperated by 1.00e-15m, If the protons were allowed to move, what would be their initial acceleration due to the electric force between them
q1. you are driving home from school steadily at 80 for 150. it then begins to rain and you slow to 50. you arrive home
A photon undergoing Compton scattering has an energy afterscattering of 800 keV, and the electron recoils with an energy of 200keV
A 0.30 kg mass is suspended on a string. In equilibrium the mass stretches the spring 2.0 cm downward. Calculate the total energy of the system
A 25 cm Diameter coil consists of 50 turns of circular copper wire 2.5 mm in diameter. Determine the rate at which tyhermal energy is produced
A telephoto lens with focal length of 123 mm has f-numbers ranging from f/2.8 to f/22. What is the diameter of the lens aperture at the second f-number
question1a woman is reported to have fallen 178 ft from a building landing on a metal ventilator box that she crushed
A Texas cockroach of mass 0.123 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has a radius 16.6 cm, What is the angular speed of the lazy Susan after the cockroach stops
A car travels due east with a speed of 44.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain
A 1.0 kg mass is connected to a spring with a spring constant of 9.00 N/m. find the maximum spring potential energy of the simple harmonic motion
You fill up your gas tank in Europe when the euro is worth $1.25 and gasoline costs 1.33 euros per liter. What is the cost of gasoline in dollars per gallon
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