A 25-kg piece of equipment can be hung by steel wires of length 1.00 m, 2.00 m, or 3.00 m. If all the wires have the same diameter, which one will stretch the greatest distance?
A) the 1.00-m wire B) the 3.00-m wire
C) the 2.00-m wire D) They will all stretch by the same distance.
B
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Which jovian planets in our solar system have rings?
A) Saturn only B) Jupiter and Saturn only C) all but Neptune D) all four of the jovian planets have rings.
Almost all the stars we see around us with the naked eye are relatively ________ in age
Fill in the blank(s) with correct word
Two stars, A and B, have the same emissivity, but the radii and surface temperatures are different with RA = 2 RB, and TA = 0.5 TB. Assuming the temperature of space to be negligible, which star radiates the most energy per unit time?
a. Star A b. Star B c. Both radiate the same amount of energy per unit time. d. More information is needed in order to make a determination.
How will you feel in your spacecraft?
A) You will be floating weightlessly. B) You will feel weight, but less than on Earth. C) You will feel weight, but more than on Earth. D) You will feel the same weight as you do on Earth. E) You will feel yourself pressed against the back of your spaceship with great force, making it difficult to move.