Pressure in a water pipe on the ground floor of a building is 100,000 Pa. Calculate the pressure
in water pipe on first floor at a height of 3 m.
[Density of water 1000 kgm ?; g = 10 ms?]

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving

Ineed with my physics homework i can’t find it on google