Aprofessor drives off with his car (mass 870 kg), but forgot to take his coffee mug (mass 0.47 kg) off the roof. the coefficient of static friction between the mug and the roof is 0.7, and the coefficient of kinetic friction is 0.5. what is the maximum acceleration of the car, so the mug does not slide off?

What is the length x of the side of the triangle below? (hint: use the cosine function)

How to tell if a molecule is polar or nonpolar with electronegativity

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative