11: How fast would you need to travel a) to escape the gravitational pull of the sun? b) As the sun begins to die, it wil become a red giant. This means that its mass will remain the same but its diameter will increase substantially. When the sun becomes a red giant will its escape speed be greater than, less than, or the same as, it is now? 12: How fast would the moon need to travel in order to escape the gravitational pull of the Earth, if Earth has a mass of 5.98 X 10^24 kg and the distance from Earth to the moon is 3.84 X10^8 m?

1. consider the case in which air fills air shocks on a truck trailer. the pressure in the shocks is 2 mpa. the temperature is 300 k. the diameter of the shock piston is 10 cm and the initial length of the cylindrical cavity containing the compressed air is 40 cm. a. the truck is gradually loaded over a period of a day in a static setting. the temperature is held constant for the atmosphere and thus for the gas shock. calculate the compressibility of the air in the shock for this condition when the truck is initially being loaded. b. if the shocks were loaded in a dynamic setting by driving over bumps, what would be the compressibility? state your assumption. c. what is the initial load on the shock if the shock is in an atmospheric 100 kpa? d. if the shock is compressed using the process described in part a, and the air shock compressed air cavity length decreases to 20 cm, what is the additional load applied to the shock?

Which changes of state do the labels represent? a: b: c:

What determines the amount of inertia an object has