A metal drum has a mass of 200kg when empty and 1000kg when filled with 10 meter cubic .what is density?​

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is