How to revise for science

What kind of line conveys instability, tension, and action

A charge of 9.0 x 10-5C is placed in an electric field with a strength of 4.0 x 104 N. What is the electrical force acting on the charge?

The ideal mechanical advantage of a pulley system is equal to the? A. Distance the load has to move B. Length of the rope C. Number of rope segments supporting the load D. Weight of the object being lifted

A heat engine exhausts 8400 j of heat while performing 3600 j of useful work. what is the efficiency of this engine?

A normal human heart, beating about once per second, creates a maximum 4.00-mv potential across 0.250 m of a person/'s chest, producing a 1.00-hz electromagnetic wave. what is the maximum electric field strength produced?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying

What is the value of x in the equation Ix - 3y = 30, when y = 15?

32. How much work is done pushing an 80 N box 2 m across ue surtout What work is done? a. 40 J c. 160 J b. 20 J d. 240 J

Which is a resource that the National Park Service manages? A. memorials B. wildlife refuges C. ecosystems D. endangered species

Write two examples (mathematical expression) of physical laws that change inversely with the square of the distance.