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An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.0 MJ when the flywheel is rotating at 1.4×10^4 revolutions per minute.
What is the moment of inertia of the flywheel?
K=...?... kg*m^2
A potter's wheel moves uniformly from rest to an angular speed of 0.18 rev/s in 28.0 s, Find its angular acceleration in radians per second per second
A plane heads due north while a crosswind blows west. The plane's resultant velocity is 620 km/h, 22° west of north. What is the velocity of the wind
An aircraft has a lift-off of 120km/h. (a) What minimum constant acceleration does the aircraft require if it is to be airborne after a takeoff run of 240m (b) How long does it take the aircraft to become airborne
An electron with a speed of 5.50×10^6 m/s, collides with an atom. What is the speed of the electron after the collision
A 4.8-m-diameter merry-go-round is initially turning with a 4.3 s period. It slows down and stops in 16 s. Before slowing, what is the speed of a child on the rim
A cord is used to vertically lower an initially stationary block of mass M = 40 kg at a constant downward acceleration of g/3. Find the work done by the cord's force on the block
A charge of 20 nC is uniformly distributed along a straight rod of length 4.0 m that is bent into a circular arc with a radius of 2.0 m
Consider a system composed of a mixture of 2.50kg of ice and 50 gr of liquid water and a small separate container of finely powdered salt. This physical system is contained in a fully insulated container that prevent.
In a certain time period a coil of wire is rotated from one orientation to another regarding a uniform 0.38-T magnetic field. The emf induced in the coil is 3.5 V. Other things being equal, what will the induced emf be if the field had a magnitude..
If a 56 diameter circular disk is uniformly angularly accelerating at a rate of 5.0 rad/s2, What angle is subtended over that time
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Determine the specific heat of the unknown second sample
The compound gear to the right is located inside a truck, whose engine rotates the driving gear with a torque of 816 N·m. find the moments of inertia of both the large and small gears
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