3.

Mechanical energy is the sum of the

energy of an object.

O kinetic and potential

O potential and thermal

O potential and chemical

kinetic and chemical

Sung rolls a marble off the edge of a table. She rolls the marble off the same table again but at a different speed.

If the magnitude of vector A⃗ is less than the magnitude of vectorB⃗, then the x component of A⃗ is less than the x component ofB⃗. If the magnitude of vector is less than the magnitude of vector, then the component of is less than the component of.

A jet fighter flying at 300 m/s (just below the speed of sound) makes a turn of radius 2.25 km. (a) what is its centripetal acceleration in gs?

What is the main type of heat transfer in liquids and gases? A. Insulation B. Convection C. Thermal Radiation D. Thermal Conduction

If a person wants to move a heavy box across the room, what is required to get the box in motion? apply any force apply a force greater than the starting friction only a pushing force will work only a pulling force will work

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud

Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12 m

A person suffering from anaemia gets tired

Jessica took a Mylar balloon outside on a very hot day. As she waited for the bus the balloon began to get bigger. What is the best explanation of this?