Adisk-shaped space station 175 m in diameter spins uniformly about an axis perpendicular to the plane of the disk through its center. how many rpm (rev/min) must this disk make so that the acceleration of all points on its rim is g/2?

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight