O bila avand masa m=2kg cade liber de la inaltimea h=20m fata de sol. Cand bila trece printr-un punct P energia potentiala a sistemului bila-Pamant este o treime din energia sa cinetica.(g=10N/kg) a) La ce inaltime fata de sol se gaseste punctul P?

b) Care este energia cinetica a bilei cand trece prin punctul P?

c) Care este viteza cu care corpul atinge solul?

How much heat is required to convert 0.3 kg of ice at 0°c to water at the same temperature

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

High schoolphysics 5+3 pts a neon light consists of a glass tube with metal wires at each end. when connected to a high-voltage source, the gas glows. if a fly lands on the glass tube, what will most likely happen? a) the fly will not feel a shock because the glass conducts any free electrons back into the gas. b) electrons will flow directly from the metal wires along the glass and shock the fly. c) the fly will not feel a shock because the glass insulates it from the electrons in the gas and the metal. d) electrons that are moving through the gas will be conducted through the glass and shock the fly.