What do they mean when they say atoms and a element are the basic back bone of the universe

A hockey puck of mass m1=165 g slides from left to right with an initial velocity of 15.5 m/s. It collides head on with a second puck of the same mass, m2=m1, moving in the opposite direction with velocity - 21.5 m/s.

What is the units of heat energy and temperature

Can the sum of the magnitudes of two vectors ever be equal to the magnitude of the sum of the same two vectors? If no, why not? If yes, when?

Which type of energy does a swinging pendulum demonstrate? A. chemical energy B. only kinetic energy C. both potential and kinetic energy D. only potential energy

Which of the following is not a function of proteins? A) provide structural components B) stores the genetic information of a living organism C) movement of muscles D) catalyze reactions in the cells E) transport substances through the bloodstream

Which of Newton's laws of motion is demonstrated by a hammer pounding a nail into a board

Heated air molecules in a hot air balloon soon carried thermal energy to the top of the balloon. this is an example of ... conduction. Convection. Radiation. Cooling.

When you are ice skating, to get started, you push your skate backwards on the ice and, as a result, begin to move forward. Which law of motion is being described in this scenario?

When attempting to solve a difficult problem, the best scientific approach would be to a. bring together a team of scientists with different backgrounds and perspectives to work together to find a solution to the problem. b.

When viewing a piece of art that is behind glass, one often is affected by the light that is reflected off the front of the glass (called glare), which can make it difficult to see the art clearly.