Les forces de gravitation 7 La pétanque
Utiliser un modèle
Trois élèves ont représenté les forces de gravitation
s'exerçant entre une boule de pétanque et un cochonnet,
dont la masse est bien plus faible.
A
B
C С
Quelle représentation est correcte ? Justifie ta réponse.

What object a collides with object b and bounces back its final momentum is?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

State the following: boyle's law and charle's law