A positive charge means:

a. surplus of electrons

b. lack of electrons

c. excess atoms

d. gained protons

Temperature measures: A. how much kinetic energy molecules have. B. the potential energy of molecules. C. how heat flows. D. the specific heat of a substance.

Would electromagnetic waves exist if changing magnetic fields could produce electric fields but changing electric fields could not, in turn, produce magnetic fields? Explain.

An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? (Formula:) 7.5 kg 15 kg 60 kg 120 kg

Which SI unit indicates the mass on an average sized cereal box

A ball is dropped off of a tall building and falls for 2 seconds before landing on a balcony. a rock is then dropped from the top of the building and falls for 4 seconds before landing on the ground.

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

What organelle is found in all animal cells and some plant cells

Basic of Archimedes's principle of how fluid can make body to float and sink.

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 625 m/s in a time of 1.10 ms (milliseconds)