What is true about energy that is added to a closed system

A boxer can hit a heavy bag with great force. why can't he hit a piece of tissue paper in midair with the same amount of force? a boxer can hit a heavy bag with great force.

In which of the following wave types is the particle motion parallel to wave motion? A longitudinal wave B s wave C surface wave D transverse wave

Newton's law of universal gravitation states that every object in the universe attracts every other object. true or false.

Which is an example of an ionic bond? Calcium gives 1 electron to chlorine to form a stable bond. Silver ions are surrounded by a large number of electrons. There are fewer than 16 valence electrons in 2 chlorine atoms, but they form a stable bond.

An unusual fog that is denser than air begins to fill a room should the people in the room walk out or crawl out

A teacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and pH indicator strips, which measure acidity.

What are geothermal heat pumps used for? a. Cooling and heating buildings b. Cooling buildings c. Heating buildings d. Heating water for using in homes

Electromagnetic waves have linear momentum as well as energy. What does this imply about electromagnetic waves?

A humanoid skeleton is found buried in the ashes of a volcano that erupted between 10,000 and 12,000 years ago. when scientists use absolute dating techniques to obtain an age of the fossil, approximately how much carbon-14 isotope will remain?

Two objects exert a gravitational force of 3 N on one another when they are 10 m apart. What would that force be if the distance between the two objects were reduced to 5 m? A. 1.5 N B. 6 N C. 12 N D. 24 N