Emm When a metallic block with a hole in it is heated, coby does not the material around the hole expand into the hole and make it smaller? A brass clock keeps conrect time at 30°c. How many will it gain or lose per day when the of the room falls to loc? [a for brass=0.0000 18'ct] penchalian seconds perenture 60​

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

Astate of matter all that has define volume and can flow is a(n)

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy