A musical tone sounded on a piano has a frequency of 874000 Hz and a wavelength of 2 m. What is the speed of the sound wave? use the equation from the power point 1.74E6 m/s 4.56E6 m/s 1.28E6 m/s 7.54E6 m/s

Determine the maximum r-value of the polar equation r =3+3 cos 0

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.