A metallic wire of length Land cross section area a having resistance r

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

What are the dimensions of the cross section that passes through the points a, f, g, and d?