Explain how you know that gasoline burning in a car engine is a chemical change.?

How much horsepower is needed to lift a box that is 10 lb 3 ft in 10 seconds

In uniform circular motion, the acceleration is perpendicular to the velocity at every instant. Is this true when the motion is not uniform-that is, when the speed is not constant?

Which is an example of thigmotropism? A. climbing vines B. blooming flowers C. bending toward the light D. leaf abscission

A active-satellite, one that sends out electromagnetic waves, can be the energy down toward the ocean surface and determine how large the waves on the ocean are. How much energy comes back to the satellite and how fast it returns gives information.

An object is dropped from the top of a tall building. At 2 seconds, it is 64 feet from the top of the building. At 4 seconds, it is 256 feet from the top of the building.

Which nitrogen base sequence is the partner of C-A-T-C-G-A? O C-A-T-C-G-A O G-T-A-G-C-T OT-G-C-T-A-G O G-C-A-T-G-T TI

What is the kind of energy that comes from movement?

The average kinetic energy of 1 mole of a gas at 273 degrees Celsius is: 6.81 x 103 J 3.40 x 103 J 1.51 x 103 J 6.72 x 101 J

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory C) Skeletal D) Nervous