What is the role of the respiratory system?

a.

to bring water into the body

b.

to bring oxygen into the body

c.

to bring carbon dioxide into the body

d.

none of the above

A dog uses 300 N of force to run 50 m with a speed of 5.9 m/s. How much power does he expand

The applied force required to push something across a surface as friction increases is what?

Is it true that an Atoms nucleus holding large amount of kinetic energy

You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars") toward you, it moves a distance of 1.3 m in a time of 1.5 s.

Is sugar cane a renewable or non-renewable source of energy? And why?

What does the ozone layer absorb? a. Microwaves c. UV radiation b. X-rays d. Infra-red radiation

An object is undergoing shm with period 0.900 s and amplitude 0.320 m. at t = 0 the object is at x = 0.320 m and is instantaneously at rest. calculate the time it takes the object to go (a) from x = 0.320 m to x = 0.160 m and (b) from x = 0.

Your friend states in a report that the average time required to circle a 1.0-mi track was 49.325 s. This was measured by timing 10 laps using a stopwatch with a precision of 0.01 s. Do you believe his results are reliable? Explain.

The forklift exerts a 300.0 N force on the box and moves it 15.0 m into the air. How much work does the forklift do? A. 500 J B. 1.50 * 10^3 J C. 4.50 * 10^3 J D. 0.00 J

Why the room gets hot even we open the door of refrigerator?