Light traveling through a fluid (n = 1.273) strikes a crystal. If the angle of incidence is 32.89° and the angle of refraction is 26.99º, calculate the index of refraction of the crystal.

=force × distance a. work b. velocity c. pressure d. momentum

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?