To find the angle of the force vector with the positive x axis, we have F · î = F cos θ = Fx for the x component of the force. For the magnitude of the force, we have F = Fx2 + Fy2 + Fz2 = 2 + 2 + 2 = N. Solving for the angle gives the following. θ = cos−1(Fx/F) = cos−1 = Incorrect: Your answer is incorrect. Your answer cannot be understood or graded. More Information ∘

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in

Which best describes the difference between internal and thermal energy?