An 11.5 kg sled is pulled with a 37.0 N force at a 40.0° angle, across ground where
MK = 0.110.
What is the force of friction on the sled?
[?] N

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7

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.