What causes the phases of our moon

If I start with 32g of Iodine-131, how much will I have after 24 days?

How many neutrons are in an arsenic atom? I belive there are 42, but better safe than sorry!

Coulomb's law states that the force F of attraction between two oppositely charged particles varies jointly as the magnitude of their electrical charges q1 and q2 and inversely as the square of the distance d between the particles.

If you have 55 grams of different substances, the most dense substance would have which volume? Select one: a. 10 m3 b. 1 m3 c. 100 m3 d. 0.10 m3

What player (s) can take a goal kick? A) Midfielder B) Any position C) Goalie D) Forward

4. The amount of distance you need to stop the car increases with specu. A. true B. false

What are the three most abundant gases in the dry atmosphere?

What happens when you open a soda? Why?

car A start 10 meters ahead of car B. Car A moves at v = (3.0i+0j) m/s and car B moves forward at v = (7.0i+0j) m/s how many seconds does it takes car B to catch up

How does scientific knowledge develop through making observations about the natural world?