1. Encuentre las componentes xy y de un vector de posición que tiene una magnitud de r = 75.0 m y un angulo relativo al eje x de a) 35°y b)
65°.

R. a) rx = 61.4 m; ry = 43.0 m
b) rx = 31.7 m; ry = 68.0 m

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank