Ablock of iron (mass: 10 kg, density: 7840 kg/m3; c_v: 0.45 kj/kg) is initially at 100 kpa and 30 deg-c. because of external heating, its entropy increases by 5 kj/k. determine the final temperature (in deg-c) of the iron block. use the sl model

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Which is an example of an exothermic process?

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.