An electric motor hoists an elevator, weighing 1.20×10⁴N,8.00m in 13.0s at a constant speed . Determine the motor's power output.

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.

Umm, its not your fault, and its because some things in your brain.

Ithink that it is b am i correct

The displacement is the change in position. final position minus the initial position.the initial position at the origin is 0 m. the final position is -12 m. therefore the displacement of the object is -12 m.