A piston cylinder device contains 0.05 m3 of a gas initially at 250 KPa. At this state, a linear spring constant of 150 KN/m is touching the piston but exerting no force on it. Now, heat is transferred to the gas, causing the piston to rise and to compress the spring until the volume inside the cylinder is 0.15 m3. If the inside of the cylinder is 0.6 m3. If the inside of the cylinder is 0.6 m, determine a) The final pressure inside the cylinder, and b) the total work done by the gas.

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

Can anybody me with this? ? (picture included.)