We measure the loudness of sound in decibels.

a. True

b. False

If a proton is moved a certain distance directly opposite an external electric field, what can we say about the change in the electric potential it experiences?

Which of the following sets of conditions would result in the highest velocity for a sound wave traveling through air? A. A cold and dry day with a wind moving in the same direction as the sound B.

How are the magnetic interaction & electric-charge interaction similar? Different

Which types of galaxies tend to be made up of very old stars and contain very little gas and dust matter?

Which best compares kinetic energy and temperature? A. Kinetic energy is energy of motion, while temperature is a measure of that energy in substances. B.

When the particle with charge q reaches the center of the original square, it is, as stated in the problem, momentarily at rest. Is the particle at equilibrium at that moment?

How does the bohr model represent electrons around the central nucleus why think of the spectra?

Refrigerated air reads 68°f and appears to be climbing: food is at 41°f. what should you do

Which piece of equipment would give the MOST accurate measurement of 45 mL of a liquid? A) A 100 mL graduated cylinder B) A 50 mL graduated cylinder C) A 100 mL beaker D) A 50 mL flask

A 54-kg jogger is running at a rate of 3m/s. What is the kinetic energy f the jogger