The assumption of homogeneity states that
a. the universe looks the same at all epochs.
b. the universe looks the same from all locations over sufficiently great distances.
c. the universe looks the same in all directions over sufficiently great distances.
d. all of the above
e. none of the above
B
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About 12 to 24 hours after the last meal, a person's blood sugar level normally varies from 60 to 90 mg per 100 ml of blood, although it may rise to 130 mg per 100 ml after meals high in carbohydrates. That the blood sugar level is maintained within a fairly narrow range, despite uneven intake of sugar, is due to the bodily process called:
a. adaptation b. homeostasis c. inheritance d. metabolism e. development
Pluto is an example of a plutino
a. True b. False Indicate whether the statement is true or false
In each of the following situations, point charge q moves in a uniform magnetic field B. The strength of the magnetic field is indicated by the density of field lines. In each situation, the initial speed v of the charge is the same. For which situation(s) will the charge q travel the longest distance in a certain time T?
1.1
2.2
3.3
4.4
5.5
6.1 & 3
7.2 & 4
8.1, 2, 3 & 4
9.1, 2, 3, 4 & 5
10.Cannot be determined
In the absence of air resistance, a projectile launched at the same speed at any angle will attain the greatest range when projected at
1) 30°. 2) 45°. 3) 60°. 4) 90°. In the case of throwing a heavy spear, not at the same speed but with the same force, the greatest range is attained more likely when thrown at 5) 30°. 6) 45°. 7) 60°. 8) 90°.