Needed for assignment plz now describe an environment in which the sound of a ringing cell phone could not be transmitted, and explain why the ringing wouldn't be heard. justify your reasoning using complete sentences and key vocabulary.

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star

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 ?

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false