If the resistance force is 40 Newtons and the effort force is 20 Newtons, what is the mechanical advantage?

A block rests on a frictionless table on Earth. After a 20-N horizontal force is applied to the block, it accelerates at 3.9 m/s2. Then the block and table are carried to the moon, where the acceleration due to gravity is 1.62 m/s2.

What happens when you go up in the atmosphere

Juan is comparing the brightness of two lightbulbs. Which SI unit should he use? a. Kelvin b. candela c. mole d. meter a or b

An ion of an element has 42 protons 44 neutrons and 43 electrons. What is it's charge and how did you make that determination?

Which single force acts on an object in freefall? A. Gravity B. Fluid forces C. Air resistance D. Friction

A teacher has asked four students to state a scientific theory. Which student is correct?

What are the two main currents that affect the US on the east and west coast?

What role do volcanoes play in the flow of energy and cycling of matter on earth?

How does uniform linear motion differ from uniform circular motion?

A metal underground water pipe that is in direct contact with the Earth for? or more is a code-recognized as a grounding electrode and must be included in the grounding electrode system.