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Friction: A 150-N box is being pulled horizontally in a wagon accelerating uniformly at 3.00 m/s2. The box does not move relative to the wagon, the coefficient of static friction between the box and the wagon’s surface is 0.600, and the coefficient of kinetic friction is 0.400. The friction force on this box is closest to

What color is the grass in late spring?

Newton’s second law: The figure shows an acceleration-versus-force graph for three objects pulled by rubber bands. The mass of object 2 is 36 kg. What are the masses of objects 1 and 3?  

Uniform circular motion: An electrical motor spins at a constant If the armature radius is what is the acceleration of the outer edge of the armature?

The following excerpt contains a polyrhythm, enclosed in a red box . Give the minimal number of subdivisions needed to determine the precise location of each note in the boxed polyrhythm.  Select the answer below and show all of your work on your paper.

Pythagorean tuning involves what two intervals? (select both answers)

What is the third note of a Bb Major scale?

Find the sum of the infinite geometric series given the sequence:   Select the answer below and show all of your work on your paper. 

Identify the chemical symbol of element Q in Q.

Equilibrium: Two blocks are connected by a string that goes over an ideal pulley as shown in the figure and pulls on block A parallel to the surface of the plane. Block A has a mass of 3.00 kg and can slide along a rough plane inclined 30.0° to the horizontal. The coefficient of static friction between block A and the plane is 0.400. What mass should block B have in order to start block A sliding up the plane? 1.