What will happen if a fluid is heated?

a) the collisions between molecules will increase and the pressure will decrease.

b) the collisions between molecules will increase and the pressure will increase.

c) the collisions between molecules will decrease and the pressure will increase.

d) the collisions between molecules will decrease and the pressure will decrease.

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

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?

How will the system respond to a temperature increase?