Which of the following is an example of kinetic energy?

a sled sitting at the top of a hill

a girl running in a race

a tank containing gasoline

a car sitting motionless Save

What can be used to make complicated concepts and systems easier to study and understand?

How is oceanic crust different from continental crust? How are they the same?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?

A 0.97 V potential difference is maintained across a 1 m length of tungsten wire that has a cross-sectional area of 0.86 mm2. What is the current in the wire? The resistivity of the tungsten is 5.6 * 10-8 Ω · m. Answer in units of A.

What affects the magnitude of gravitational force

A firefighting crew uses a water cannon that shoots water at 25.0m/s at a fixed angle of 53.0 degrees above the horizontal. The firefighters want to direct the water at a blaze that is 10.0 m above ground level.

Sulfur oxides (SO2) are responsible for A) global warming. B) greenhouse gases. C) producing acid rain. D) destroying the ozone layer.

During a collision between a photon and an electron, there is conservation of

To produce change in motion, a force must be a (n) A) balanced force B) unbalanced force C) frictional force D) gravitational force

What is meant when Earth's systems are said to be "dynamic"? they are all the same type they are slow moving they cannot be measured they are constantly changing