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A 270 N sphere 0.20 m in radius rolls,without slipping 6.0 m down a ramp that is inclined at 31° with the horizontal. What is the angular speed of the sphere at the bottom of the hill if it starts fromrest?
rad/s
Interpreting attenuation as a reflection loss calculate the lower limit to the effective reflectivity at the core cladding boundary
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the mass of the wheel
Calculate the total time for car A to travel the 15.0 m and after the collision, car B moves to the right at a speed of 4.8 m/s. Calculate the velocity of car A after the collision.
imagine a hole is drilled down to the center of the earth. a small mass m is dropped into the hole. find the speed of the mass just as it reaches the earth's center
Two packages at UPS start sliding down the 20 degree ramp, How long does it take package A to reach the bottom
Consider a hot-air balloon. The deflated balloon, gondola, and two passengers have a combined mass of 315 kg, Then find the temperature of the air inside the balloon
A horizontal magnetic field of 1.0x10^(-4) T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long, what is the magnitude of the force on the wires
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. Find the angular frequency (omega) of simple harmonic motion
Assume all temperatures to be exact, and neglect significant figures for small changes in dimension. An athlete has a large lung capacity, 7.4. how many molecules of air are in the athlete's lungs
Explain how fast would it be moving after it had fallen a distance of 0.010 m? (Assume that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)
A jogger accelerates from rest to 5.87 m/s in 3.53 s. A car accelerates from 21.3 to 34.7 m/s also in 3.53 s. (a) Find the magnitude of the acceleration of the jogger. (b) Find out the magnitude of the acceleration of the car. (c) How much further..
The kiloton, which is used to measure the energy released in an atomic explosion, is equal to about 4.02 x 1012 J (approximately the energy released in the explosion of 1,000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature..
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