Dark energy
A) has mass.
B) has never been directly observed in the laboratory.
C) pushes on space.
D) All of the above.
E) None of the above.
D
Physics & Space Science
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The first minerals to crystallize are those having the
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How does metal content vary between young disk stars and older halo stars? Why?
What will be an ideal response?
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Electric potential is measured in units of
A) volts. B) joules. C) amperes. D) watts. E) any or all of these
Physics & Space Science
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
Physics & Space Science