If a crane lifts a crate that weighs 50N up 3m is 3s. How much power is required?

Ithink the answers is b i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

B. elliptical. as in oval. 0 (==

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.