A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = ?30 cm. What is the acceleration of the particle?
a. ?7.3 cm/s2
b. ?8.9 cm/s2
c. ?11 cm/s2
d. ?15 cm/s2
e. ?13 cm/s2
a
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Two loudspeakers placed 6.0 m apart are driven in phase by an audio oscillator whose frequency range is 2193 Hz to 2967 Hz
A point P is located 4.4 m from one loudspeaker and 3.6 m from the other. The speed of sound is 344 m/s. The frequency produced by the oscillator, for which constructive interference of sound occurs at point P, is closest to A) 2580 Hz. B) 2903 Hz. C) 2473 Hz. D) 2795 Hz. E) 2688 Hz.
A colloid is a ______________ mixture.
Fill in the blank(s) with the appropriate word(s).
A bird sitting on a bare high voltage wire is not electrocuted because
a. of the high resistance of its body b. there is no electrical potential difference across its body c. its body is at a low electrical potential compared to the wire d. the high voltage across its feet produced a small current
How should 
for an ideal gas?
A. 
B. 
C. 
D. One cannot tell without careful calculation.