Which has a greater mechanical advantage. a doorknob or screwdriver?

A living factor in an ecosystem, such as plants or animals. Abiotic or biotic

Describe several characteristics that distinguish population I stars from population II stars.

Write at least name of five devices which work under the principles of Physics.

What number equal 20

Crude oil is a mixture of many different components. The extraction of crude oil from the Earth is important, but its refinement into different substances is a key piece to obtaining as many uses as possible from the crude oil.

The force supplied by a spring depends on what?

What happens after the Gulf Stream travels north? It cools and flows away from the pole, causing cooler climates farther south. It circles the poles, becoming ice. It crashes with incoming warm water.

A crane lifts a 35,00-N steel grinder a distance of 25m in 45s. How much power did the crane require to life the grinder? Write your answer in Kilowatts.

An example of objects the move in revolution

How many hops does a kangoroo do in 1 day