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3 years ago

Which of the following describes an element?

Physics

1 answer:

saw5 [17]3 years ago

7 0

Answer:

Matter made up of only one type of atom.

Explanation:

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in which sample water do the water particle have more energy:5 grams of ice cubes at -10°c or 5 of a liquid water at 20°c?

Veseljchak [2.6K]

liquid water at 20 degrees Celsius

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3 years ago

What would happen if a proton were added to the nucleus of the atom? (Check all that apply)

katen-ka-za [31]

Answer:

It would become a different element.

Explanation:

When you change the number of protons i.e, add a proton in the nucleus of an atom, you will change the atom from one element to a different element and also positive charge of the atom also increased by 1.

For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium.

So, we conclude that by adding a proton the atom will change from one element to another element.

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3 years ago

A lamp is connected to the power supply.

Vika [28.1K]

Answer:

There are 45 turns in the secondary coil.

Explanation:

Given that,

Input potential of the lamp, $V_{in}=5\ V$

The output potential of the lamp, $V_{out}=1.5\ V$

Number of turns in primary coil, $N_P=150$

We need to find the number of turns needed on the secondary coil. We know that the ratio for a transformer is as follows :

$\dfrac{V_{out}}{V_{in}}=\dfrac{N_s}{N_P}\\\\N_s=\dfrac{V_{out}N_P}{V_{in}}\\\\N_s=\dfrac{1.5\times 150}{5}\\\\N_s=45\$

So, there are 45 turns in the secondary coil.

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3 years ago

The loss of an organism at the bottom of a food chain negatively impacts all organisms in the chain.

hammer [34]

If this is a true or false question, it is True.

7 0

3 years ago

Read 2 more answers

A circle has a radius of 10 inches. Find the approximate length of the arc intersected by a central angle of mc001-1. Jpg 6. 67

Andrei [34K]

The approximate length of the arc intersected by the central angle is 20.94 inches.

The given parameters:

Radius of the circle, r = 10 inches
Central angle, $\theta = \frac{2\pi }{3} \ rad$

The approximate length of the arc intersected by the central angle is calculated as follows;

S = rθ

where;

S is the length of the arc

Substitute the given parameters and solve for the length of the arc

$S = 10 \ in \times \frac{2\pi }{3} \\\\S = 20.94 \ inches$

Thus, the approximate length of the arc intersected by the central angle is 20.94 inches.

Your question is not complete, find the complete question below:

A circle has a radius of 10 inches. Find the approximate length of the arc intersected by a central angle of $\frac{2\pi}{3}$ .

Learn more about length of arc here: brainly.com/question/2005046

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3 years ago