You place a 20.0-cm focal length convex lens at a distance of 30.0 cm in front of another convex lens of focal length 4.0 cm. Then you place a candle 100 cm in front of the first lens.
Find the distance from the final image of the candle to the right of the second lens.

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

How does convection affect our atmosphere? our layers of earth? our oceans?

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?