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The flywheel of a gasoline engine is required to give up 530J of kinetic energy while its angular velocity decreases from 690 rev/min to 550 rev/min. What moment of inertia is required?
An LC circuit is built with a 50mH inductor and an 8.0pF capacitor, The capacitor voltage has its maximum value of 40V at t=0s, What is the inductor current at that time
A closed box has two metal terminals a and b. The inside of the box contains an unknown emf emf in series with a resistance R, Find the emf and R
The internal energy of a system increases by 100 J while 800 J of work are performed on it. What was the heat flow into or out of the system
Chiana is stalking a fly of mass 0.10 g, but the fly gets caught in a spider's web. What is the value of the effective spring stiffness constant k for the web
A long straight wire carries a current of 4.5 A. The wire is horizontal in the plane of the page (screen), What is the force that acts on the electron
The coefficient of static friction between the tires of a car and a horizontal road is 0.450. What is the minimum distance in which the car can stop
Suppose that a particle of mass 0.24 kg acted upon by a spring undergoes simple harmonic motion. What is the total energy of this motion
Consider a steel container that can hold a maximum of 0.2 m3 of ethanol at a temperature of 30°C. how much more ethanol can be put into the container
The intake in the figure has cross-sectional area of 0.80 m2 and water flow at 0.41 m/s. What is the pressure difference between inlet and outlet
A disk-shaped merry-go-round of radius 2.99 and mass 170 rotates freely with an angular speed of 0.623. Calculate the final kinetic energy for this system
A 348 g mass is hung on a spring with a spring constant of 25 N/m. Find the stretch of the spring when the mass is in equilibrium
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3, find the volume of helium in the balloon when fully inflated
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