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A 5.0 kg, 60-cm-diameter disk rotates on an axle passingthrough one edge. The axle is parallel to the floor. The cylinder is held with the center of mass at the same height asthe axle, then released.
a) What is the cylinder's initial angular acceleration?b) What is the cylinder's angular velocity when it isdirectly below the axle?
A string oscillates according to the equation y´ = (0.175 cm) sin[(?/5.0 cm-1)x] cos[(22.6 ? s-1)t]. What is the distance between nodes
Calculate the efficiency of a fossil-fuel power plant that consumes 380 metric tons of coal each hour to produce useful work at the rate of 800 MW
A 1500 kg truck, cruising at 20.0 m/s, approaches a 0.450 km long hill inclined at 5.74?. what average force was applied to the drive wheels
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 40°. For a speed of 35 m/s, at what value of the distance d should a drive..
A person of mass 52.0 kg stands at rest. How much will the average force exerted on the feet by the floordiffer from the person's weight during a 0.195 s interval in which the blood's upward component of momentum increases by 4.45 10-2 kg ·
Three equal positive point charges of magnitude Q = 6.00? C are located at three corners of a square of edge length d = 2.9 cm. A negative charge -18.00? C is placed on the fourth corner.
Suppose you walk 3.97 m down a 30° incline while holding a 1.05 kg block. The 3.97 m distance is measured as a displacement along the incline; not as a vertical change in height. How much work do you do on the block as you walk down the incline.
A jeweler examines a diamond with a magnifying glass. find the angular magnification when the diamond is held 5.39cm from the magnifying glass
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
An ambulance is traveling east at 55.6 m/s. Behind it there is a car traveling along the same direction at 34.5 m/s, What is the wavelength of the sound of the ambulance's siren
A police officer is investigating a crash between two identical cars of mass m = 1500 kg. What is the speed that the officer writes on the ticket
Consider a fluorescent molecule where the electron that participates in fluorescence has ground state energy of -4.6 eV. what wavelength photon is given off
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