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1) A man stands on a frictionless platform that is rotating with an angular speed of 3.3 rad/s; his arms are outstretched and he holds a weight in each hand. With his hands in this position the rotational inertial of the system of man, weights, and platform is 4.3 kg*m2. If by moving the weights the man decreases the rotational inertial of the system to 1.8 kg*m2, what is the resulting angular speed of the platform?
2) What is the change of the kinetic energy when the man moves his arms?
A fully loaded Boeing 777 commercial airplane with a mass of 303.6 tonnes is at one end of the runway and about to take off. Calculate the length of the runway
Three capacitors, C1, C2 = 2C1 and C3 = 3C1 are connected in parallel to a voltage source of value V. What is the voltage across each capacitor when all three switches are closed
Two 1.5 g spheres are charged equally and placed 1.6 cm apart. What is the magnitude of the charge on each sphere
The Earth is showered with particles from space known as muons. What will be the radius of the muon's resulting orbit
A 6.0 V battery is connected in series with a 29 mH inductor, a 110 ohm resistor, and an open switch. How much energy is stored in the inductor
There is an isolated point charge of q = +15 ?C. Using a test charge of q0 = +0.80 ?C, determine the E-field at point P which is 0.20 m away
A hot-air balloon is ascending at the rate of 12 m/s and is 84 m above the ground when a package is dropped over the side. Explain how long does the package take to reach the ground?
A 55 kg person is riding in a hot air balloon and scale shows this person's weight too be 549N. the acceleration of gravity at the location of the balloon is known to be 9.79 m/s/s.
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. compute maximum inductance of the tank circuit
An L?R?C series circuit has phase angle -33.0?. What is the voltage amplitude across the resistor
what is the decrease in entropy of 25.0g of water that condenses on a bathroom mirror at 35C assuming no change in temp and given the latent heat of vap to be 2450KJ/KG
A star is about 6.00 light years from Earth. How long would the trip take according to an Earth based observer
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