Alead object and a quartz object each have the same initial volume. the volume of each increases by the same amount, because the temperature increases. if the temperature of the lead object increases by 4.1 °c, by how much does the temperature of the quartz object increase?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .