An atomizer works because of
a. Archimedes' principle.
b. Pascal's principle.
c. Bernoulli's principle.
d. Torricelli's principle.
e. none of these principles.
c
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In a double-slit experiment, the distance between the slits is 0.2 mm, and the distance to the screen is 150 cm. What wavelength (in nm) is needed to have the intensity at a point 1 mm from the central maximum on the screen be 80% of the maximum intensity?
a. 900 b. 700 c. 500 d. 300 e. 600
Elastic Collisions: A 50-g ball moving at 10 m/s in the +x direction suddenly collides head-on with a stationary ball of mass 100 g. If the collision is perfectly elastic, what is the velocity of each ball immediately after the collision?
A. -3.3 m/s, +6.7 m/s B. +3.3 m/s, -6.7 m/s C. -6.7 m/s, +3.3 m/s D. +6.7 m/s, -3.3 m/s
What mechanism is most responsible for generating the internal heat of Io that drives the volcanic activity?
A) accretion B) radioactive decay C) differentiation D) tidal heating E) bombardment
A venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (? = 1.2 kg/m3.)
a. 70 Pa b. 85 Pa c. 100 Pa d. 120 Pa e. 81 Pa