A fallen tree is lifted 2.75 meters how much work is done

Which molecules of the adaptive defense system provide humoral immunity by circulating freely in the blood and lymph

The charge of sphere 2 is twice that of sphere 1. which vector below shows the force of 2 on 1?

Scientific notation 325

Two boys on skateboards are facing each other. They push off, the first boy (mass: 43.8 kg) traveling backward at 2.1 m/s. If the second boy is now traveling at 3.09 m/s, what is his mass?

For an object to appear blue what must the object do to blue light waves? A. It must refract them B. It must diffract them C. it must reflect them D. It must shift them

Two workers pull horizontally on a heavy box but one pulls twice as hard as the other. The larger pull is directed at 25.0 west of north and the resultant of these pulls is 430.0N directly northward.

What would happen to an object in orbit without gravity pulling down?

The waters of a lake will be most layered in which season A. winter B. spring C. summer D. fall

Which of the following is an example of an archery contestant showing good precision but poor accuracy? O A. Hitting a bulls-eye once and then missing a second time O B. Hitting a bulls-eye every time O C.

List and describe two ways currents affect life on earth