What phenomenon results from two tuning forks, side by side, emitting frequencies which differ by only a small amount?
a. resonance
c. the Doppler effect
b. interference
d. beats
D
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The nucleus of the hydrogen atom consists of a single neutron
a. True b. False Indicate whether the statement is true or false
Which of the following objects never collide with the Earth?
A) Apollo asteroids B) Amor asteroids C) Aten asteroids D) long period comets E) short period comets
A heat engine has an efficiency of 35.0% and receives 150 J of heat per cycle. (A) How much work does it do in each cycle? (B) How much heat does it "waste" in each cycle?
What will be an ideal response?
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