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Engineers at the University of Texas at Austin are developing an Advanced Locomotive Propulsion System that uses a gas turbine and perhaps the larghigh-speed flywheel in the world in terms of the energy it can store. The flywheel can store 4.8 x 108J of energy when operating at its maximum rotational speed of 15,000 rpm. At that rate, the perimeter of the rotor moves at approximately 1,000 m/s.
-Determine the radius of the flywheel.
-Determine the rotational inertia of the flywheel.
A 12- V battery causes a current of 0.40A through a resistor. A) what is its resistance B) how may joules of energy does the battery lose in minutes.
Two consecutive frequencies are 500 Hz and 540 Hz. ( Stringed instrument; closed-closed) Calculate the fundamental frequency
A golfer hits a tee shot off of a cliff that is 18.2 m high. If it lands in the fairway a horizontal distance of 270 m from the tee and is in the air for 5.3 seconds, What was the initial velocity of the golf ball
Two capacitors are connected in series. Let 3.40mF be the capacitance of first capacitor, Calculate the potential difference across each capacitor
At t = 0, the current through a 65.0 mH inductor is 52.0 mA and is increasing at the rate of 100 mA/s. What is the initial energy stored in the inductor
a scientist notices that an oil slick floating on water when viewed from above has many different rainbow colors
The surface pressure on Venus is 92.00 atm, and the acceleration due to gravity there is 0.894 g. What total inward force does the atmosphere exert on the vertical walls of the tank
a rock is sliding alone a horizontal surface with a veolcity of 8.5 ms . it eventually stops due to friction. what is the power produced by the fricition
A bank robber travelling at 75mi/hr in an escape car suddenly sees a barricade 150 m ahead. The robber slams on the breaks following a 0.75 delay (the drivers reaction time) After the brakes are applied, the car decelerates at 4.2m/s^2. Will th..
The convex lens of a copy machine has a focal length of 25.0cm. A letter to be copied is placed 40.0cm from the lens. How far from the lens is the copy paper located? The machine was adjusted to give an enlarged copy of the letter. How much larger wi..
Two square metal plates are placedparallel to each other, separated by a distance d= 1.34 cm. The plates have sides of length L = 0.790 m. One of the plates hascharge Q= + 3.42×10 -6 C, while the other plate hascharge -Q.
A student stands on a bathroom scale in an elevator atrest on the 64th floor of a building. The scale reads 836 N. Find the acceleration of the elevator
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