Physics, 04.08.2019 17:00 traybrown0690
Two thermometers, calibrated in celsius and fahrenheit respectively, are put into a liquid. the reading on the fahrenheit scale is four times the reading on the celsius scale. the temperature of the liquid is:
Answers: 1
Physics, 22.06.2019 04:00
19. explain why a magnet from your refrigerator could not be used to lift something as heavy as a car. (chapter 7 โ pages 202-203) 20. can a magnet ever have a single pole? explain your answer. (chapter 7 โ page 208) 21. what happens to the wavelength of a wave if the frequency is increased? (chapter 9 โ pages 280-281) 22. an ocean wave has a wavelength of 10 m and a frequency of 4.0 hz. what is the velocity of the wave? show the appropriate equation from your book and show your work with units. (chapter 9 โ page 282) 23. as you sit outside, the sound of a siren becomes lower in pitch. is the emergency vehicle moving away from or towards you? explain how you know. (chapter 10 โ page 315-316) 24. why are two astronauts in space unable to hear one another? (chapter 10 โ page 307) 25. explain in at least 3 sentences how electromagnetic waves form. (chapter 11 โ page 338-339) 26. using the chart on page 345 in your textbook, what are the three types of electromagnetic wave with wavelengths shorter than those of visible light. give an example of each. (chapter 11 โ pages 345-351) 27. explain why a leaf usually appears to be green, but a rose typically appears red. (chapter 12 โ page 373) 28. what is the difference in light that is refracted compared to light that is reflected? think in terms of speed of light as well as what happens to light waves when they interact with a medium. (chapter 12 โ pages 369-370) 29. how are concave and convex lenses different? (chapter 13 โ page 408-410) 30. what type of mirror is used in rearview mirrors in cars? why is it important that these mirrors have the warning, โobjects in mirror are closer than they appear.โ? (chapter 13 โ page 405)
Answers: 3
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1ร105 wm-2k-1 and tโ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
Physics, 23.06.2019 03:20
The motion of water in a dam serves human beings by generating electricity as it is a controlled motion. give one example for an uncontrolled motion. what effects could it cause
Answers: 1
Two thermometers, calibrated in celsius and fahrenheit respectively, are put into a liquid. the read...
Mathematics, 12.12.2019 19:31
Business, 12.12.2019 19:31
History, 12.12.2019 19:31
English, 12.12.2019 19:31
Chemistry, 12.12.2019 19:31
English, 12.12.2019 19:31
Physics, 12.12.2019 19:31