For nearby galaxies, determining the rotation curve allows us to calculate the mass
Indicate whether the statement is true or false
TRUE
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In order to have a global magnetic field, a planet must have
A) an electrically conducting fluid in its interior which is undergoing convection and a reasonably rapid rotation B) magnetic rocks in its interior C) magnetic rocks on its surface D) a large core of solid magnetized iron
Give two reasons why summer days are warmer than winter days
What will be an ideal response?
In the figure shown, the
A. green wave is in phase with the blue wave. B. red and blue waves differ in phase by 90 degrees. C. green and blue waves differ in phase by 180 degrees. D. green and blue waves differ in phase by 360 degrees. E. both B and C.
Three identical resistors are connected in series to a 12-V battery. What is the voltage across any one of the resistors?
A) 12 V B) 3 V C) 36 V D) 0 V E) 4 V