Chemicals can change by combining with other chemicals.

True or False

a bottle rocket takes off with an acceleration of 34.5m/s^2. it fires until it reaches a height of 200m, then shuts off, and gravity takes over. what maximum height does it reach? (unit = m)

When a certain metal is illuminated with light of frequency 3.0*1015 hz, a stopping potential of 7.27 v is required to stop the most energetic electrons. what is the work function of this metal?

Angie is moving a couch with a mass of 48 kg. she moves it in 120 seconds using 240 j of work. what is her power output

A pregnant woman goes out of her room goes to the fridgeopens a can of tuna a soda a yogurt a cookie Which one did she open first?

Is jacob barnes a turd face?

What are the requirements of a practical fuel

A woman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. The book has a mass of m = 1.7 kg and the coefficient of static friction between her hand and the book is μs = 0.52.

Tony has a mass of 50 kg, and his friend Sam has a mass of 45 kg. Assume that both friends push off on their rollerblades with the same force. Explain which boy will have greater acceleration.

Which part of your ear do sound waves enter through?

Why do scientist use different types of models to represent compounds