Sarah is pushing a box down the hall. Sarah has used 30j of work in 10s.

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

Which atomic model was proposed as a result of j. j. thomson’s work?

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?