The warmth you feel from the sun at the beach is an example of __________
Fill in the blank(s) with correct word
heat radiation
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The figure shows the graph of 
versus time for an object moving along the x-axis. What is the acceleration at t = 7.0 s?
A. 4.0 
B. 5.0
C. 0.5
D. 0.4
What does Einstein's energy equation (E = mc2) say about the energy that is derived from nuclear fission reactions?
A) The energy released is due to the missing mass of the products compared to the mass of the starting materials. B) The energy is proportional to the mass of the atom undergoing fission. C) The energy is derived from the light that is emitted when the atom splits. D) The energy equation does not apply towards fission, only fusion. E) none of the above
What does it mean to say that electrons are not point particles, but rather wavelike?
What will be an ideal response?
A 2.31-kg rope is stretched between supports that are 10.4 m apart, and has a tension in it of 49.2 N. If one end of the rope is slightly tweaked, how long will it take for the resulting disturbance to reach the other end?
A) 0.720 s B) 0.699 s C) 0.615 s D) 0.664 s