How do simple machines make work easier?

a. they change the strength or direction of a force.

b. they maintain the distance of a force.

c. they apply force quickly.

d. they decrease the power available.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.