BONUS QUESTION: f = 20.0 Hz
Drill
3.0 m
5.0 kg
BONUS QUESTION: A drill vibrates at 20 Hz. The drill is attached to a rope, producing
standing waves as shown above. If the 5.0 kg mass was replaced with an object MUCH
heavier increasing the tension in the string, the wavelength would
A. Increase
B. Decrease
C. Stay the same
D. Unable to be determined
Justification:
4

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Which subatomic particle has a negative charge

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.