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3 years ago

Explain why the poles are colder than the tropics.?

1 answer:

6 0

The poles don’t receive direct sunlight which is why they are colder than the tropics. Even during the summer the sun is low on the horizon.

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How could a plant control turgor pressure?

Nata [24]

The pressure inside the plant cell is turgor pressure and it is also controlled by osmosis which is movement of molecule from higher to lower concentration across a membrane that is selectively permeable
The opening and closing of stomata also control turgor pressure
hope it helps

6 0

3 years ago

What is the equivalent resistance of the

BigorU [14]

Answer:

Approximately $111\; {\rm \Omega}$ .

Explanation:

It is given that $R_{1} = 200\; {\Omega}$ and $R_{2} = 250\; {\Omega}$ are connected in a circuit in parallel.

Assume that this circuit is powered with a direct current power supply of voltage $V$ .

Since $R_{1}$ and $R_{2}$ are connected in parallel, the voltage across the two resistors would both be $V$ . Thus, the current going through the two resistors would be $(V / R_{1})$ and $(V / R_{2})$ , respectively.

Also because the two resistors are connected in parallel, the total current in this circuit would be the sum of the current in each resistor: $I = (V / R_{1}) + (V / R_{2})$ .

In other words, if the voltage across this circuit is $V$ , the total current in this circuit would be $I = (V / R_{1}) + (V / R_{2})$ . The (equivalent) resistance $R$ of this circuit would be:

$\begin{aligned} R &= \frac{V}{I} \\ &= \frac{V}{(V / R_{1}) + (V / R_{2})} \\ &= \frac{1}{(1/R_{1}) + (1 / R_{2})}\end{aligned}$ .

Given that $R_{1} = 200\; {\Omega}$ and $R_{2} = 250\; {\Omega}$ :

$\begin{aligned} R &= \frac{1}{(1/R_{1}) + (1 / R_{2})} \\ &= \frac{1}{(1/(200\: {\rm \Omega})) + (1/(250\; {\rm \Omega}))} \\ &\approx 111\; {\rm \Omega}\end{aligned}$ .

7 0

2 years ago

What type of pipe wrenches are designed for turning and holding where marring is not objectionable?

galina1969 [7]

The type of pipe wrenches which are designed to turn and hold where marring is not objectionable is known as the chain wrench.<span> It has two serrated which adjust and grip the pipe. </span>

5 0

4 years ago

Are nerve cells in direct contact with other types of tissues ?<br><br> Please help.

Ber [7]

Answer:

Yes, they are.

Explanation:

it says it has to be 20 characters long so this is random.

6 0

3 years ago

Which statement describes how light behaves when it strikes a translucent material?

lord [1]

I believe the answer is A. Light is scattered.

6 0

3 years ago

Read 2 more answers