A scuba diver has his lungs filled to half capacity (3 liters) when 10 m below the surface. If the diver holds his breath while quietly rising to the surface, what will the volume of the lungs be (in liters) at the surface? Assume the temperature is the same at all depths. (The density of water is 1.0 × 10^3 kg/m3.)
a. 5.9
b. 4.5
c. 6.4
d. 3.9
e. 3.1
A
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Three 10-ohm resistors take the shape of a triangle, one resistor in each leg. Connecting an ohm-meter across any two points of the triangle will show the equivalent resistance to be
A) 1.4 ohms. B) 5 ohms. C) 6.7 ohms. D) greater than 6.7 ohms.
Which is true about comparing clocks in two different inertial systems?
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Observations of radio waves from astronomical objects suffer from poorer resolution than visible observations with the same size dish (or mirror) because
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