0.30 kg cart moves on an air track at 1.2 m/s. It collides with and sticks to another cart of mass 500 g, which was stationary before collision. What is the velocity of the combined carts after collision?

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!

If there are 3.5 moles of koh, how many moles of naoh can be produced? question 1 options: a)3.0 moles naoh b)3.5 moles naoh c)1 moles naoh d)9 moles naoh