HELP PLZ! does the distance between particles of a liquid increase as the liquid in a thermometer increases?

4. a car with a mass of 2,200 kg can accelerate from 0 to 30 m/s in 6 seconds. a. assuming all of the force generated by the engine goes into acceleration of the car, how much force is the engine producing? show your work. (6 points)

The volume of a right circular cylinder can be approximated as follows: volume = ? r2h; where r is the radius of the cylinder and h is the height of the cylinder; ? is a constant that is roughly equal to 3. using the simple approximation above, calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 7 meters

Two piers, a and b, are located on a river. b is 1500 m downstream from a. two friends must make round trips from pier a to pier b and return. one rows a boat at a constant speed of 4.50 km/h relative to the water. the other walks on the shore at a constant speed of 4.50 km/h. the velocity of the river is 2.60 km/h in the direction from a to b. how much time does it take each person to make the round trip?