Gruba książka o masie 2kg spada swobodnie na Zemię z wysokości 20m jaką miala energię potencjalną przed upadkiem? Potrzebuje na teraz

DAJE NAJ

Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging