Most galaxies are in ________, which contain hundreds or thousands of galaxies
Fill in the blank(s) with correct word
galaxy clusters
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What is the source of your type of energy (where do we get it)?
What will be an ideal response?
A metal sample of mass M requires a power input P to just remain molten. When the heater is turned off, the metal solidifies in a time T. The specific latent heat of fusion of this metal is:
A. P/MT B. T /PM C. PM/T D. PMT E. P T /M
The electric potential at a distance of 4 m from a certain point charge is 200 V relative to infinity. What is the potential (relative to infinity) at a distance of 2 m from the same charge?
A) 200 V B) 50 V C) 400 V D) 100 V E) 600 V
Consider an experiment where we send monochromatic light to a distant screen through a single narrow slit. The distance between adjacent dark fringes in the diffraction pattern displayed on the screen (A) increases, (B) decreases, or (C) remains the same if, We look at fringes farther from the central maximum.
A. Increases B. Decreases C. Remains the same