Two identical fish, both at sea level, float in two identical aquariums with identical quantities of water. Fish A is in Alaska, so it weighs more than fish B at the equator, since g is larger at sea level in Alaska. Which statement is correct?
a. A comparison is impossible unless they are both floating at the same level.
b. Fish A displaces a greater quantity of water than fish B.
c. Fish B displaces a greater quantity of water than fish A.
d. They both displace the same quantity of water.
e. Fish A has a smaller acceleration than Fish B when equal horizontal forces are applied to each, because Fish A weighs more.
d
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Three point charges are located on the x-axis. The first charge, 
is at x = -1.00 m; the second charge, 
is at the origin; and the third charge,
is located at x = 2.00 m. What is the force on 
?
A. 1.65 N in the negative x-direction B. 3.15 N in the positive x-direction C. 1.50 N in the negative x-direction D. 4.80 N in the positive x-direction E. 4.65 N in the negative x-direction
This figure shows idealized thermal radiation spectra from several stars and a human. Based on this graph, at about what wavelength does a 15,000 K star emit its most intense light?
A) about 100 nanometers B) about 1,000 nanometers C) about 20 nanometers D) about 100,000 nanometers
Two particles, each of charge 2.5 × 10^–19 C, are 4.8 × 10^–5 m apart. What is the change in potential energy if they are brought 2.4 × 10^–5 m closer together? (ke = 8.99 × 10^9 N·m2/C2)
a. 1.2E–23 J b. 4.7E–24 J c. 2.3E–16 J d. 1.4E–15 J e. 2.9E–20 J
The positron was discovered by which of the following physicist