What electromagnetic radiations can the human bodies senses detect

Two plane mirrors inclined at an angle of 50 degree to each othe r a ray is incident on mirror1 then thedeviation x of ray after two reflections is

Assume that a 15-kg ball moving at 8 m/s strikes a wall perpendicularly and rebounds elastically at the same speed. What is the amount of impulse given to the wall?

He power output of a cyclist moving at a constant speed of 5.3 m/s on a level road is 120 w. (a) what is the force exerted on the cyclist and the bicycle by the air? n

Object A, which has been charged to + 13.5 nC, is at the origin. Object B, which has been charged to - 22.05 nC, is at x=0 and y=1.84 cm. What is the magnitude of the electric force on object A?

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?

Work and energy have the same units because

Why is copper used for most electrical wiring?

Nerve impulses fill in blanks

Find the impulse of a 50. kg object under the following scenarios: a. The object accelerates to 7.5 m/s from rest. b. The object stops from a velocity of 12.0 m/s. c. The object change in velocity from 2.2 m/s to 6.3 m/s. d.

1. Should water be classified as renewable or nonrenewable? Explain your reasoning. 2. Describe the life cycle of a low mass star similar to our sun. 3. Identify the advantages and disadvantages of using coal for energy.