bonsoir pouvez vous s'il vous plait m'aider à mon exercice c'est pour demain. On peut considérer la terre comme une sphère de rayon R=6400 Km. 1) Quelle est la période de rotation de la terre autour de son axe ? 2) Calculer la vitesse angulaire de rotation de la terre. 3) Calculer la vitesse linéaire VE à l’équateur(=0°). 4) Calculer la vitesse linéaire VM d’un point situé à MARRAKECH (=28°).

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

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.