When a pendulum swings, if it is not continuously pushed, it will stop eventually

because some of its energy is changed into energy.

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

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water