Q1 Abba stands on a scale in an elevator. At rest on the ground floor it reads (224 lbs = 1000 N). At some later time, the elevator has a velocity upward of 5 m/s and acceleration downward of 2 m/s2. What does the scale read?

How are period and frequency related to each other? dperiod is the reciprocal of frequency.

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Jenny and fred both play a long note on their trombones. a stationary observer hears the sound increasing and decreasing repeatedly in loudness. which of these must be true? the sound waves from the two trombones have slightly different frequencies.the sound waves from the two trombones have the same frequency.the sound waves from the two trombones have slightly different amplitudes.the sound waves from the two trombones have the same wavelength.the sound waves from the two trombones have slightly different velocities.  lolthe answer is          the sound waves from the two trombones have slightly different frequencies.