Metric System: The prefix yotta (Y) signifies a multiple of 1024. How many yottameters are there in a gigameter?
Fill in the blank(s) with the appropriate word(s).
10-15 ym
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While observing the Sun, you note a large number of sunspots. What can you conclude?
A) The Sun is less luminous than usual. B) This is a period of low solar activity. C) Earth's climate will be unusually cold. D) The Sun's rotation is slower than average. E) There are likely to be an above average number of flares and prominences.
In the Big Bang, about 75% of the normal matter by mass was hydrogen atoms, and the other 25% almost entirely helium
Indicate whether the statement is true or false
A 0.025-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is 150 N/m. The block is pulled from its equilibrium position at x = 0.00 m to a displacement x = +0.080 m and is released from rest
The block then executes simple harmonic motion along the horizontal x-axis. When the displacement is x = 0.024 m, what is the kinetic energy of the block? A) 0.44 J B) 0.41 J C) 0.46 J D) 0.49 J E) 0.52 J
Our model for explaining the electrical interaction between charged objects
A. makes sense only at very high speeds. B. depends very strongly on the mass of the two objects. C. depends on the existence of three kinds of charge. D. postulates that an electric field surrounds each charged object.