Consider an iron rod that is 1-m long and expands 1/4 cm when heated. By how much will a 100-m rod of the same material expand when similarly heated?
What will be an ideal response?
100 times as much, or 25 cm; the heated rod will be 100.25 cm long.
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During the winter in the Northern Hemisphere, the "land of the midnight sun" would be found:a
at high latitudes. b. at middle latitudes. c. near the equator. d. in the desert southwest. e. on the West Coast.
Radon gas is produced by radioactive decay of the element ________
Fill in the blank(s) with correct word
Which of the following is not true regarding rotational velocities at different latitudes?
A) At 90° latitude, the rotational velocity is 1452 kmph (902 mph). B) At 0° latitude, the rotational velocity is 1675 kmph (1040 mph). C) At 60° latitude, the rotational velocity is 838 kmph (521 mph). D) At 30° latitude, the rotational velocity is 1452 kmph (902 mph).
A solution has a pOH of 7.4 What is its pH?
A) -6.6 B) -7.4 C) 7.4 D) 6.6