3 years ago

Explain how pressure operates within a plant cell to help it keep its shape.

1 answer:

5 0

A large organelle called a vacuole fills with water and pushes on the cell wall to give it a rigid shape. The amount of pressure exerted by the vacuole is called "turgor pressure".

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A worker does 25 J of work lifting a bucket, then sets the bucket back down in the same place. What is the total net work done o

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What does it mean for something to have charge?

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A 150 kg boy and his bike are traveling 12 m/s when he slams on his breaks and stop at his friend’s house. How much impulse is r

Nataly [62]

Answer:

J = 1800 kg-m/s

Explanation:

Given that,

Mass of a boy, m = 150 kg

Initial velocity of a boy, u = 12 m/s

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We need to find the impulse is required to produce this change in momentum. We know that impulse is equal to the change in momentum. So,

$J=m(v-u)\\\\=150\times (0-12)\\\\=-1800\ kg-m/s\\\\|J|=1800\ kg-m/s$

So, the impulse is equal to 1800 kg-m/s

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3 years ago

A person with a mass of 40 kg is sitting on a box. What is the value of the normal force

VMariaS [17]

normal force=mass*gravitational force

normal force=40*0

normal force=40

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