If solid-state physics had never been studied, which applications might be missing from science and technology today? Check all that apply. knowledge of the structure of DNA
an understanding of hemoglobin
ice
ground fault circuit interrupters
credit cards
quantum mechanics
aerogel

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)

You can decrease the resistance of a length of wire by