Matter can change its form but it cannot be destroyed.

True

False

Two balls have a race over a distance of 20.0 meters. The red ball travels at a constant velocity while the blue ball starts at rest and has a constant acceleration. For this problem set the blue ball's acceleration to be 3.30 m/s2.

Which part of a scientific argument must be supported by valid data? claim evidence reasoning theory

A definition and description of acid rain: An overview of the areas of the world in which acid rain is an issue Five suggestions for what we can do to prevent acid rain and the damage it causes A specific example of an area that experiences acid

If the boat's engine has a heat of 40,000 J, with 30,000 J exhausted into the surroundings (the heat sink), what is its efficiency? Show your work.

Atoms contain subatomic particles called protons and neutrons. When these protons and neutrons split, a lot of energy is released. What kind of energy is this? nuclear radiant thermal chemical

How are magnet'so magnetic force and magnetic field different

Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground? A. A bird sat on a telephone wire. B. A woman moved her child from one place to another in a wagon. C.

What types of mediums are involved in the energy transfer

When two frequencies are added together, the beat frequency and the average frequency are an octave apart?

When sunlight strikes oil on the surface of water, a variety of colors are observed. What is the best explanation for this observation? A) Oil reflects the light and the lens of our eyes break it into component colors.