What two elements existed before the first stars?

What is the charge on an electron? o o top o o

The sun emits a stream of energetic electrons and protons called the solar wind. These particles frequently get caught up in the earth's magnetic field, traveling in spiral paths that take them toward the north or south magnetic poles.

Which of the following statements applies to a longitudinal wave? A. The long motion of the medium is random B. The motion of the medium is in a circular pattern C. The motion of the medium is parallel to the motion of the wave D.

What does the speed of a wave on a string depend upon

Chicago is often referred to as the "Windy City". What is the cause of all this wind?

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?

Wich section of a business plan should come first but be written last?