What is granulation in the Sun?
A) the bubbling pattern on the photosphere produced by the underlying convection
B) another name for the way sunspots look on the surface of the Sun
C) elements in the Sun other than hydrogen and helium
D) dust particles in the Sun that haven't been turned into plasma
E) lumps of denser material in the Sun
A
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What is the significance of the Planck time?
A) It is the amount of time required for two protons to fuse to make deuterium. B) It is the time at which inflation is thought to have occurred. C) It is the time when the cosmic microwave background was released. D) Before it, conditions were so extreme that our current understanding of physics is insufficient to predict what might have occurred.
A 150g tennis ball accelerates at 14m/s2. Calculate the force applied by the tennis racket. Include units in your answer.
This is a science physics question on forces. I dont understand please help. Thank you
The increase in tensile and shear yield strength due to the strain hardening of metals is proportional to the dislocation density to the _________ power.
Fill in the blank(s) with the appropriate word(s).