To make a given sound seem twice as loud, how should a musician change the intensity of the sound? a. halve the intensity. b.increase the intensity by a factor of 10.c. double the intensity. d.quadruple the intensity. e.quarter the intensity.

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Which of the following is the best name for mgcl2

Which of the choices are parts of an atom? select all that apply. a.) compound b.) electron c.) neutron d.) molecule e.) photon f.) proton g.) element