Which of the following is an example of convection?
a. hot air rising and cooler air fa...
Answers: 1
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
Answers: 2
Physics, 22.06.2019 17:30
Which planet do you think would be easiest for humans to colonize some day?
Answers: 1
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
History, 21.07.2019 21:30
Geography, 21.07.2019 21:30
English, 21.07.2019 21:30
Mathematics, 21.07.2019 21:30
Mathematics, 21.07.2019 21:30
Mathematics, 21.07.2019 21:30
Geography, 21.07.2019 21:30