A spaceship in outer space has a gyroscope within it used for rotation and stabilization. The moment of inertia of the gyroscope isIg = 24.5 kg · m2about the axis of the gyroscope, and the moment of inertia of the rest of the spaceship isIs = 5.00 ✕ 105 kg · m2about the same axis. Initially both the spaceship and gyroscope are not rotating. The gyroscope is then switched on and it nearly instantly starts rotating at an angular speed of 120 rad/s. How long (in s) should the gyroscope operate at this speed in order to change the spaceship's orientation by 40.0°?

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

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

The necleus of an atom is made up of what subatomic particles?