A net force of 40 N south acts on an object with a mass of 20 kg. What is the object's acceleration?
(Hint: Use the formula a = f/m

A. a = 4 m/s 2 north
B. a = 2 m/s2 south
C. a = 10 m/s2 south
D. a = 20 m/s 2 north

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

True or false graphs must include scales that increase by the same amount

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants