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An automobile is approaching you at a speed of 50.0 km/h and sounding its horn. The fundamental frequency of the horn sounds to you like 266 Hz. If the speed of sound is 335 m/s, the real fundamental frequency of the horn is ___Hz. (Give your answer with the correct number of sig digs and do not include units)
A fire engine is being driven away from you at a speed of 15.4 m/s. One of the notes in its siren sequence has a fundamental frequency of 244 Hz. If the speed of sound is 338 m/s, the fundamental frequency of that particular note will seem to you to be ___Hz. (Give your answer with the correct number of sig digs and do not include units)
True or False. Two waves will overlap exactly (i.e., match up) only when the phase of one of the waves is exactly 2pi radians greater or less than than the phase of the other wave.
If the density of pine wood is 0.25 g/cm3, what is the mass of 5 cm3?
A car travelling at 15 m/s comes to rest in a distance of 14 m when the brakes are applied.
Calculate the deceleration of the car.
A man cleaning a frictionless floor pulls a vacuum cleaner with a force F of magnitude 50 N at an angle of 30° with the horizontal. What is the magnitude of the work done by the weight of the vacuum cleaner?
while playing game of billiards, your 0.50 kg cue ball travelling at 1.9 m/s glances off a stationary 0.40 kg board red billard balls moves at 1.3 m/s at an angle of 32 degrees clockwise from the cue ball s original path. what is the final speed of the cue ball? show all the work!
Two point charges are placed as follows: charge q1= -1.50 nC is at y= +6.00 m and charge q2= +3.20 nC is at the origin. What is the total force (magnitude and direction) exerted by these two charges on a negative point charge q3= -5.00 nC located at (2.00 m, -4.00 m)?
A body moves from a position r1 =i +2j -3k m and r2 =2i +3j -3k m under the influence of a constant force F 3i +I- k calculate workdone by force
