6. When you lift a heavy box and place it on top of

put the box on the table, it remains stationary. We h

object, you either add to or take away from its energ

the energy of the box? Was it potential or kinetic er

Copper has a specific heat of 0.385 j. A piece of copper absorbs 5000 J of energy and undergoes a temperature change from 100 Celsius to 200 degrees Celsius. What is the mass of the piece of copper?

A car has an initial velocity of 45m/s and a final velocity of 0m/s 9 seconds later. a. what is the acceleration? b. how far did they travel during the 9s?

Which of the following best identifies where long-range order would be found? in amorphous solids in crystalline solids in thermal plasmas in nonthermal plasmas

What are the three defining features of a planet?

A monkey is sitting at the top of a tree 20 m above ground level. A person standing on the ground wants to feed the monkey. He uses a bow and arrow to launch the food to the monkey.

Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology?

A light ray travels inside a horizontal plate of glass, striking its upper surface at an angle of incidence of 50°. This ray is totally internally reflected at the glass-air boundary. A liquid is then poured on top of the glass.

A stationary object has no forces acting on it. True False

April swims 50 m north and then turns and swims 20 m back to the south. What is her velocity if it takes her 60 seconds?

What happens to the mass of an object when it is cooled?