True or false? Gas pressure is caused by molecules in a gas colliding with the walls of their container.

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

In a good thermo flask the main cause of heat loss is

Of is j/kg·k. if a 2.6 kg of isk to k,is ?