The ph of an acidic substance is between what values on the ph scale?
a. 0 and 14
b. 0 and 7
c. 7 and 14
d. greater than 14

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

The substances that are necessary for producing of certain hormones and that store and transport vitamins

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?