How long do CFC molecules remain active in the stratosphere?

a. 10 to 50 years

b. 30 to 60 years

c. 60 to 120 years

d. 150 to 500 years

What is it called when you connect an object to earth with a conductor

A cat is running at 24 m/s. It then accelerates at 7 m/s2. How long will it take the cat to reach a speed of 49 m/s?

Huan made a chart to study for an exam about radio waves. Which headings best complete the chart? X: Phase Y: Pulse X: Pulse Y: Phase X: AM Y: FM X: FM Y: AM

Andrea walked 1 block north and then 2 blocks west. How could you determine her total displacement

Suppose you have 100kg of fresh strawberries. What would be the approximate mass of the strawberries after freeze-drying

What is the tense In sailed

Acceleration is a vector quantity. O O A. True B. False

What will happen to the brightness of a string of bulbs hooked up in series when you increase the number of bulbs in the string? A. Each light in the string will get brighter. B. Each light in the string will get dimmer. C.

What are the two factors that influence the composition of beach material

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a