5. Identify Which of the following substances will conduct electric current aluminum foil, sugar

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?