One of the possible dangers of EMF's are ________
a. radio system interference
b. their potential to produce a shock
c. biological effect of small magnetic fields
d. electrocution
c
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A ‘cliff diver' in Mexico dives off a high cliff and falls for 2.3 seconds before hitting the water. (a) How fast is the diver going at impact? (b) How far below the cliff is the diver at this point?
The process in which thermal energy flows by the mass movement of molecules from one place to another is known as
A) conduction. B) convection. C) radiation.
3.00 moles of an ideal gas at a pressure of 250 kPa are held in a container of volume of 25.0 L. The ideal gas constant is R = 8.314 J/mol ? K = 0.0821 L ? atm/mol ? K, and 1 atm = 1.01 × 105 Pa. The temperature of this gas is closest to
A) 240°C. B) -180°C. C) 480°C. D) -1.0°C. E) -22°C.
Which is the correct order of the states of matter of a substance, from coldest to hottest?
a. solid, gas, liquid, plasma. b. plasma, gas, liquid, solid. c. gas, liquid, solid, plasma. d. solid, liquid, gas, plasma. e. plasma, liquid, gas, solid.