The unit of density in the mks system is ______________
Fill in the blank(s) with correct word
kg/m3
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What is meant by an incompressible material?
What will be an ideal response?
Which of the following statements is true of coronal holes?
A) Open magnetic fields allow ionized gas to flow away as the solar wind. B) Reconnection events prevent the release of ionized gases outward from the corona. C) Discharge of solar materials is prevented because the region is extremely thick. D) Magnetic field loops back into the Sun to trap the solar wind.
For the wave described by 
, determine the first positive x coordinate where y is a maximum when t = 0.
A. 16 m B. 8 m C. 4 m D. 2 m E. 13 m
A toaster, sketched in the figure, has two heating elements on either side of a slice of bread when toasting the bread. The element temperature is 450ºC and its emissivity is 0.85 when bread is toasted. If the bread is at 100ºC, the bread’s emissivity is 0.65, and the surroundings reradiate heat, determine the net heat transfer to the bread.
What will be an ideal response?