A 0.27-kg turntable of radius 0.30 m spins about a vertical axis through its center. A constant rotational acceleration causes the turntable to accelerate from 0 to 28 revolutions per second in 8.0 s. Calculate the rotational acceleration.

Answer (d) valerie rides her bike south at 8 kilometers per hour///owen jogs south at 8 kilometers per hour ;

The extra penny comes form u and the other preson 

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.