Which electromagnetic wave has the lowest frequencies (less than 3*109 hertz) ?

A.

microwaves

B.

visible light

C.

radio waves

D.

gamma rays

A man is dragging a trunk up the loading ramp of a mover's truck. The rarnp has a slope angle of 20.0", and rhe rnan pu lls upward with a lbrcc F whose direction makes an angle of 30 0' with the ramp (Fig. la.).

What happens when you drop a penny from a height of 20 meters

The second floor of a house is 6m above street level. How much work is reguired to lift a 300 kg refrigerator to the second story?

Using information about natural laws, explain why some car crashes produce minor injuries and others produce catastrophic injuries. Will give brainliest + 5 stars!

The battery charger for an mp3 player contains a step-down transformer with a turns ratio of 1:24, so that the voltage of 120 v available at a wall socket can be used to charge the battery pack or operate the player.

Which of these substances has the highest pOH? 0.10 M HCl, pH = 1 0.001 M HNO3, pH = 3 0.01 M NaOH, pH = 12

A climber pulls herself 8 meters upwards with a force of 150 Newtons. If it takes her 16 seconds to cover the 8 meters, how much power is she using? A. 40 W B. 55 W C. 70 W D. 75 W

How is volume calculated directly and indirectly

Which state of matter has the greatest amount of particle movement?

An engineer wishes to design a hydraulic system that will transmit pressure of 10,000 pascals using a force of 15 newton's how are large an area should the input piston have