A rope and pulley system is used to lift a box that weighs 90 Newton's. How much force do you need to pull on the rope if the machine has a mechanical advantage of 5?

If something is being carried by westerlies, what direction is it moving?

Will an electric charge spread over an entire balloon? explain

Gravitational potential energy is a form of potential energy

A electric model train travels at 0.339 m/s around a circular track of radius 1.75 m. How many revolutions does it perform per second, i. e, what is the motion's frequency?

To find the number of neutrons in an atom, what would you subtract?

Shows a 190 g hamster sitting on an 820 g wedge-shaped block. the block, in turn, rests on a spring scale. an extra-fine lubricating oil having μs=μk=0 is sprayed on the top surface of the block, causing the hamster to slide down.

What will happen to the hydronium ion concentration and pH of the water if hydrochloric acid is added to water?

What is the main driver of the water cycle

What two types of evidence are used to classify orgianisms?

What is the name of the fine soil particles deposited by rivers?