N order to climb a steep hill on a bicycle, a rider shifts to the lowest gear. The lowest gear has the greatest mechanical advantage because it

What does balanced and unbalanced forces have to do with newtons laws of motion

Which term best describes a question that can be tested?

A small pool filled only with water will require an additional 300 gallons of water in order to be filled to 80% of its capacity.

A carnot heat engine has an efficiency of 0.800. if it operates between a deep lake with a constant temperature of 280.0 k and a hot reservoir, what is the temperature of the hot reservoir?

Which statements describe the factors affecting the strength of an electrical force? Check all that apply. The weaker the charge on two objects, the stronger the electrical force between them.

A ball player catches a ball 3.24 s after throwing it vertically upward. With what speed did he throw it?

Most metallic ores are produced by which two of processes? a) Metamorphic and Sedimentary b) Igneous and Metamorphic c) Igneous and Sedimentary d) Cementation and Compaction

Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied?

SI unit of mass and gravity

What is the difference between porosity and permeability