What is a simple machine that has two or more simple machines working together

What level of nitrates is considered clean water?

6 foot waves carries more energy than a 3 foot waves

Imagine an elevator crowded with too many passengers for such a small space. This situation would be a good analogy for a substance with what property

Who was the first president of kenya

Which labels, if placed from left to right, best complete the timeline? Z, X, Y Y, Z, W W, X, Z Y, Z, X

What is the kind of energy that comes from movement?

The average kinetic energy of 1 mole of a gas at 273 degrees Celsius is: 6.81 x 103 J 3.40 x 103 J 1.51 x 103 J 6.72 x 101 J

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory C) Skeletal D) Nervous

What's the transmission of heat requiring the movement of a liquid or a gas is?