The law of conservation of matter states that during a chemical reaction

Six pendulums of mass mand length Las shown are released from rest at the same angle theta from vertical. Rank the pendulums according to the numberof complete cycles of motion each pendulum goes through perminute. A. L = 1m m=2kg B. L = 4m m=1 kg C.

A hot air balloon is filled with 1.37 * 106 l of an ideal gas on a cool morning (11 °c. the air is heated to 117 °c. what is the volume of the air in the balloon after it is heated? assume that none of the gas escapes from the balloon.

Why does a skier wear polarized glasses instead of glasses that are used for reading? a) Polarized glasses increase the brightness of light compared to regular glasses.

How does increasing the distance between charged objects affect the electric force between them? the electric force increases because the distance has an indirect relationship to the force.

A car maintains a constant velocity of 100 km/hr for 10 seconds. During this interval its acceleration is A) zero. B) 10 km/hr. C) 110 km/hr. D) 1000 km/hr.

Two identical space probes are orbiting Jupiter. Scientists determine that one of the space probes has a larger gravitational force acting on it than the other. which of the following is the most likely reason for the difference? A.

The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 95.2 m.

What is the transfer of energy by collisions between the atoms in the material

An object is dropped from a platform 400 ft high. ignoring wind resistance, what will its speed be when it reaches the ground?

What factors determine whether a collision between two reactant molecules will result in a reaction?