At the first minimum in the diffraction pattern, what is the path length difference between the ray from the top of the slit and the ray from the bottom of the slit? a. 0.25 wavelength
b. 0.50 wavelength
c. 0.75 wavelength
d. 1.00 wavelength
e. 1.50 wavelengths
f. 2.00 wavelengths

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?

Abird sitting high in a tree is an example of what type of wnergy

Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)