Suppose you warm up 510 grams of water (about half a liter, or about a pint) on a stove, and while this is happerning, you also stir the water with a beater, doing 6 x 104 j of work on the water. after the large-scale motion of the water has dissipated away, the temperature of the water is observed to have risen from 18°c to 82°c
part 1 (a) what was the change in the thermal energy of the water? aethermal = the tolerance is +/-5% attempts: 0 of 10 used *
part 2 (b) taking the water as the system, how much energy transfer due to a temperature difference (microscopic work) q was there across the system boundary? j the tolerance is +/-5% attempts: 0 of 10 used
part 3 (c) taking the water as the system, what was the energy change of the surroundings? aesurtoundings the tolerance is +/-5% attempts: 0 of 10 used
Answers: 2
Physics, 22.06.2019 12:30, madlenserlipepu1o
Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=
Answers: 2
Physics, 22.06.2019 22:30, shadowz8813
Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?
Answers: 3
Suppose you warm up 510 grams of water (about half a liter, or about a pint) on a stove, and while t...
Mathematics, 24.06.2019 15:00
Mathematics, 24.06.2019 15:00
Mathematics, 24.06.2019 15:00
History, 24.06.2019 15:00
Geography, 24.06.2019 15:00