Which of these refers to tempo?
a. pace of music or speed of beats per minute
b. a consistent, periodic pulse that is separated into equivalent intervals of time
c. placement of sounds at definite regular time intervals
d. fundamental chord consisting of three tones or pitches

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

The necleus of an atom is made up of what subatomic particles?