Physics, 19.11.2020 23:40 georgesarkes12
An open system starts with 52 J of mechanical energy. The energy changes to 45 J of mechanical energy and 2 J of thermal energy. What is the final total energy of the system? A. 9J B. 50 J C. 47 J D. 54 J
Answers: 2
Physics, 22.06.2019 04:50
Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?
Answers: 1
Physics, 22.06.2019 12:00
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
Physics, 22.06.2019 16:00
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?
Answers: 1
An open system starts with 52 J of mechanical energy. The energy changes to 45 J of mechanical energ...
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