What is the antimatter equivalent of the electron?

a. neutrino

b. positron

c. lepton

d. fermion

How can a cyclist minimize friction as he or she rides? A. by increasing the weight of the bike B. by increasing the trend on his or her tires C. by decreasing the air resistance D. by decreasing aerodynamic design

A group of elementary students were playing shuffle board on the playground. One student pushed the puck toward the opposite side of the game board.

Lighting converts ... energy, into ... energy.

How is a globular cluster similar to a spiral galaxy?

When the northern hemisphere is tilted toward the sun that part of the earth is closer to the sun and thus hotter? True or false

A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?

An object moves from the position + 16m to the position + 43m in 12s. What us the total displacement

Which factor is most important in determining climate? A. Longitude B. Latitude C. Rainfall D. Temperature

We all know that in the earth gravity is there, but why clouds doesn't fall down?

An unknown mass of each of the following substances, initially at 23.0, absorbs 1910 of heat. The final temperature is recorded as indicated. Find the mass of the substance, given: Pyrex glass (55.5)