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Physics, 22.06.2019 06:30
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 ?
Answers: 1
Physics, 22.06.2019 19:30
Coal contains energy. a. light b. kinetic c. chemical d. mechanical
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Physics, 23.06.2019 12:00
Awave is propagating from left to right in a medium. the particles in the medium are also vibrating from left to right. what kind of wave does this describe? a. longitudinal wave b. transverse wave c. mechanical wave d. electromagnetic wave
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Physics, 23.06.2019 20:30
Cobwebs are popular decorations at halloween time, but an experiment in which spiders were given psychoactive substances showed that it really affects their web spinning skills! the web below was spun under the influence of what?
Answers: 2
The mass of an object is 84 kg. Find its weight on the Earth and the Moon....
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