In the formula E = mc2, what does E represent?
A) the kinetic energy of a moving object
B) the radiative energy carried by light
C) the gravitational potential energy of an object held above the ground
D) the mass-energy, or potential energy stored in an object's mass
E) the electric charge of the object
D
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How does the age of the universe depend on Hubble's constant, and why?
What will be an ideal response?
If an object is placed before a singe thin lens
A. real images are always enlarged. B. virtual images are always inverted. C. real images are always inverted. D. convex lenses never create virtual images.
The atmosphere of Venus is about 95% ________
Fill in the blank(s) with correct word
The ratio of the density of a material to the density of water is the weight density
a. True b. False Indicate whether the statement is true or false