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Marina CMI [18]
3 years ago
9

How do the trillions of cells in the human body get what they need to function

Chemistry
1 answer:
Dvinal [7]3 years ago
8 0
Nutrients! the food and water/liquid we drink gives us the calories, the nutritions, and many more to help the cells in the human body survive.
hope this helps, feel free to mark brainliest
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Air pollution

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4 years ago
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What type of energy sources don't cause pollution? Can you name at least 3 ? Thanks!!!
Lisa [10]
Solar Energy

Wind Energy

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Here are 3 energy sources that don't cause pollution, <em>I hope this helps.</em>
6 0
3 years ago
Match the term with the definition.
ryzh [129]

Answer:

Condensation is when heat turns to water vapour

Melting is when solid turns to liquid

Freezing is when liquid turns to solid

Sublimation is when solid turns to gas without passing through the liquid state

4 0
3 years ago
A person of 82 kg is in an elevator. If the elevator is moving at a speed of 5m/s, what’s the person’s kinetic energy.
andre [41]

Answer:

The person’s kinetic energy is 1,025 J

Explanation:

Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.

Kinetic energy is defined as the amount of work necessary to accelerate a body of a given mass and in a position of rest, until it reaches a given speed. Once this point is reached, the amount of accumulated kinetic energy will remain the same unless there is a change in speed or the body returns to its state of rest by applying a force.

Kinetic energy is represented by the following formula:

Ec=\frac{1}{2}*m*v^{2}

where Ec is kinetic energy, which is measured in Joules (J), m is mass measured in kilograms (kg), and v is velocity measured in meters over seconds (m/s).

In this case:

  • Ec= ?
  • m= 82 kg
  • v= 5 \frac{m}{s}

Replacing:

Ec=\frac{1}{2}*82 kg*(5\frac{m}{s} )^{2}

Solving:

Ec= 1,025 J

<u><em>The person’s kinetic energy is 1,025 J</em></u>

3 0
3 years ago
Name two lab tools used to measure the volume of a liquid
Margarita [4]

Answer:

beaker and flasks

Explanation:

4 0
3 years ago
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