Simple machines A. cannot be combined to make compound machines. B. are tools that make work easier. C. reduce the amount of energy needed to do work. D. are made up of multiple moving parts.

How many of the elements of the periodic table are considered solids

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?

What units are used to express pressure measurements

Chef tom works in a very busy restaurant. he cooks for 100's of people each night. why chef tom would use a copper pot instead of an aluminum pot?

What do formulas, arrows and plus signs tell you in a chemical equation

Two boxes hang from a solid disk pulley that is free to rotate as the blocks rise/fall. The left box has a mass m1 = 4.3 kg and the right box has a mass m2 = 2.1 kg. The pulley has mass m3 = 2.5 kg and radius R = 0.15 m.

What is the relationship between speed and instantaneous velocity? a) Speed is the magnitude of velocity b) Speed is the direction of velocity c) There is no relationship

A combination reaction is when two or more reactants __ to form one product

True or false? a well oiled machine has no friction

Conclusion 1. why do engineers place tolerances on dimensions? 2. what are the three types of tolerances that appear on dimensioned drawings? 3.