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A bus contains a 1440 kg flywheel ( a disk that has a 0.670 m radius ) and has a total mass of 9400 kg. Calculate the angular velocity of the flywheel must have to contain enough energy to take the bus from rest to a speed of 17.0 m/s, assuming 89.0% of the rotational kinetic energy can be transformed into translational energy.
How high a hill can the bus climb with the stored energy and still have a speed of 2.90 m/s at the top of the hill? Explicitly show how you follow the steps in the Problem Solving Strategy for Rotational Energy.
An electron is in the ground state of an infinite square well. The energy of the ground state is E1 = 0.72 eV. What is the width of the square well
Seismographs measure the arrival times of earthquakes with a precision of 0.100 s.7 To get the distance between to the epicenter of the quake, they compare the arrival times of S- and P-waves, which travel at different speeds.
Calculate the angle between the lines (in degrees). Use the angle in the +y direction from the crossing point. (All distances are in meters.)
Two 9.0 cm--diameter metal plates are 1.2 cm apart are charged to 12.5 nC . They are suddenly connected together by a 0.218mm, What is the maximum current in the wire
A potential difference V is applied to a wire of cross section A, length L, and resistivity ?. You want to change the applied potential difference, What should be the new values of L and A in terms of the old values
A 1035 kg car carrying four 78 kg people travels over a rough "washboard" dirt road with corrugations 5.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude while its speed is 16 km/h. The car now ..
A gas expands from I to F. The energy added to the gas by heat is 442 J when the gas goes from I to F along the diagonal path. What is the change in internal energy of the gas.
A jet of water squirts out horizontally from a hole near the bottom of the tank. If the hole has a diameter of 3.40 mm, what is the height, h, of the water level in the tank.
find its velocity after the explosion. The man pulls the boy up to the tree limb C by walking backward at a constant speed of 1.1 m/s. find out the speed at which the boy is being lifted at the instant x_A = 4 {rm m}.
A motorcycle has a constant speed of 28.4 m/s as it passes over the top of a hill whose radius of curvature is 159 m. Find the magnitude of the centripetal force
A wheel free to rotate about its axis that is not frictionless is initially at rest. A wheel free to rotate about its axis that is not frictionless is initially at rest
Light of wavelength 418 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. What is the wavelength of the light in the water
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