You and a friend go to the park to use the seesaw. if you have a mass of 55 KG and your friend has a mass of 80 KG. You sit at the end of the seesaw which is 2M from the center. Where does your friend need to sit so you balance?

4. a 75.0 g piece of ag metal is heated to and dropped into 50.0 g of water at the final temperature of the mixture is what is the specific heat capacity of silver? 5. a 465 g chunk of iron is removed from petrucci, ralph h.. general chemistry (p. 290). pearson education. kindle edition.

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

Which component of the earth’s atmosphere is decreased due to photosynthesis?