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Dennis_Churaev [7]
3 years ago
7

What role do plants serve in the oxygen cycle

Physics
1 answer:
kodGreya [7K]3 years ago
4 0
Plants,such as trees poduce oxygen to help animals like insects or humans can bresth snd surviave.
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A stone of mass m = 1.05 kg is released from a height of h = 2.1 m into a pool of water. At a time of t = 1.83 s after hitting t
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Answer:

Explanation:

ignoring air resistance, the kinetic energy at water impact will equal the potential energy converted

½mv² = mgh

v = √(2gh)

v = √(2(9.81)2.1) = 6.4188... m/s

after impact, an impulse will result in a change of momentum.

There is a downward impulse due to gravity equal to the weight of the stone and an upward average force due to water resistance and buoyancy force.

FΔt = mΔv

(F - mg)Δt = m(vf - vi)

(F - mg) = m(vf - vi)/Δt

F = m(vf - vi)/Δt + mg

F = m((vf - vi)/Δt + g)

F = 1.05(((½(-6.4188) - -6.4188)/ 1.83) + 9.81)

F = 12.14198...

F = 12.1 N

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A ball of 12 kg is attached to a string of 0.8 meter spun at 4
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Which Equation will you use to solve this question (use the chart at the end of the lesson) While skiing, Sam flies down a hill
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