Which of the following exerts gravity? A.
only objects on Earth
B.
only the Earth
C.
any object with mass
D.
only planets, moons, and stars

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?