Asample of gas at 23°c is placed in an expandable container with a volume of 23 ml. the gas is heated and expands to a volume of 30 ml. what conversion(s) must take place to determine the final temperature of the gas?

a) the volumes must be converted to liters.
b) the temperature must be converted to kelvin.
c) the volumes must be converted to atmospheres.
d) the temperature must be converted to fahrenheit.

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?