1.1.5 La variation de la masse d'un objet chargé. Une sphère métallique initialement neutre est chargée par induction:
elle acquiert une charge positive de 5 °C. (a) Sa masse a-t-elle augmenté ou diminué? (b) De combien ?

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

What are the north and south poles of a solenoid change with?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.