What is dark matter?

Match the term to its description. Match Term Definition Sun A) All existing matter, energy, and space Star B) An astronomical body that orbits around a planet Universe C) A sphere of extremely hot plasma held together by its own gravity Moon D) The

Can a simple inclined plane have a mechanical advantage less than one? Explain your answer. (Hint: Can the height of a ramp ever be greater than its length?)

Two grocery carts have the same initial total momentum. The two carts collide, and now cart B has a greater final velocity.

A piece of solid copper, at 10oC, is dropped into a graduated cylinder of 100°C water. Which statement BEST describes the change in heat energy in this system? A) Both water and copper temperatures decrease.

A metal bar 70cm long and 4.00 kg in mass supported on two knief - edge placed 10 cm from each end. a 6.00 kg weight is suspended at 30 cm from one end. find the reaction at the knife-edge?

What does it mean when a plane is perpendicular to the x-axis?

If the weight of an object that is submerged in a fluid is 10 N and the buoyant force on it is 20 N, what will happen to the object?|

A switch in an electric circuit controls the flow of electrons in the circuit. True O False

What are three common forms of work in science

A boat travels north across a river at a velocity of 22 meters/second with respect to the water. The river's velocity is 2.2 meters/second to the east. What is the resultant velocity of the boat, as measured from the land?