Under standard conditions, the density of air is 1.29 kg/m3. What is the mass of the air inside a room measuring 4.0 m × 3.0 m × 2.0 m?
A) 0.32 kg
B) 3.1 kg
C) 31 kg
D) 1.9 kg
E) 19 kg
C
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In a paramagnetic material if a large magnetic filed is first applied and then reduced to zero, the intensity of magnetization is then equal to _________.
Fill in the blank(s) with the appropriate word(s).
If you drop an object, it will accelerate downward at a rate of 10 m/s2. If you instead throw it downward, its acceleration (in the absence of air resistance will be
A) less than 10 m/s2. B) 10 m/s2. C) greater than 10 m/s2.
A perfectly black body at 100°C emits light of intensity I that has the strongest intensity near wavelength ?
The temperature of this body is now increased to 200°C. (a) In terms of I, what is the intensity at which this hotter body radiates? (b) In terms of ?, near what wavelength does light radiated from this hotter body have the strongest intensity?
Bowl-shaped depression; the term comes from the Greek for bowl
A. Crater |
B. Stone meteorites |
C. Tektites |
D. Meteors |
E. Regmaglypts |
F. Meteor showers |