Asample of a low-density gas is initially at room temperature and has pressure p0 . the gas is warmed at constant volume until the pressure is 2p0 .

compared to the initial celsius temperature of the gas, the final celsius temperature is

a. greater by a factor of more than 2.

b. greater by a factor of 2.

c. greater by a factor between 1 and 2.

d. the same.

e. less

An object's buoyant force and weight mean the same thing. a. trueb. false

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?