A car moves a distance of 6km due north, then moves 5km due east, then 4km due north due east it stopped for a while before moving 7km due south and it finally stopped at a point 5km due west from it last position. Calculate the distance covered by the car and its direction from its starting point.​

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

What is the increase in density of a medium due to wave travel?

A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping.the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?