What does kepler's second law state? a. planets travel in ellipses. b. planets sweep equal areas in equal times. c. a planet's apparent backward movement is termed retrograde motion. d. an object's orbital period is related to its distance from the object it orbits.

Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.