1 La lithosphère (p. 184-200) mer
VOUS
l'unc
1. Observez l'illustration suivante.
1
2
Pyri
3
4
5.
a) Nommez les différentes couches
de la structure de la Terre.
​

Assuming weightless pulleys and 100% efficiency, what is the minimum input force required to lift a 120 n weight using a single fixed pulley?

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.

Explain why electric current cannot exist if a current doesn't have a voltage source.