Aspacecraft is in empty space. it carries on board a gyroscope with a moment of inertia of ig = 18.5 kg m2 about the axis of the gyroscope. the moment of inertia of the spacecraft around the same axis is is = 5.00 105 kg m2. neither the spacecraft nor the gyroscope is originally rotating. the gyroscope can be powered up in a negligible period of time to an angular speed of 145 rad/s. if the orientation of the spacecraft is to be changed by 28.0, for what time interval should the gyroscope be operated?

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?