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3 years ago

Give me a fact about any animal.

Physics

1 answer:

Fudgin [204]3 years ago

7 0

Answer:

The fingerprints of a koala are so much like humans that they have been confused at a crime scene.

Explanation:

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the number of protons in one atom of an element determines the atom's _______ , and the number of electrons determines _______ o

Sedbober [7]

The number of protons in one atom of an element determines the atom’s identity and the number of electrons determines electrical charge of an element.

<u>Explanation: </u>

Atoms are made up of protons, neutrons and electrons. The protons and neutrons are enclosed in a specific spherical region at the center of the atom termed as nucleus of the atom. This is because proton is positive charge and neutron is neutral charged high mass particles.

While the electrons are negative charged lighter mass particles. So the electrons will revolve around the nucleus. The protons number in element's one atom helps to identity its chemical properties of the element. While the electrons number in an element will determine the electrical charge and conducting nature of the element.

3 0

3 years ago

When a pendulum with a period of 2.00000 s is moved to a new location from one where the acceleration due to gravity was 9.80 m/

Ivahew [28]

Answer:

0.021 $m/s^2$

Explanation:

The period of a pendulum is dependent on the length of the string holding the pendulum, L, and acceleration due to gravity, g. It is given mathematically as:

$T = 2\pi \sqrt{\frac{L}{g} }$

Let us make L the subject of the formula:

$T^2 = 4\pi ^2(\frac{L}{g}) \\\\\\\frac{L}{g} = \frac{T^2}{4\pi ^{2}} \\\\\\L = \frac{gT^2}{4\pi ^{2}}$

We are not told that the length of the string changes, hence, we can conclude that it is constant in both locations.

When the period of the pendulum is 2 s and the acceleration due to gravity is 9.8 $m/s^2$ , the length L is:

$L = \frac{9.8 * 2^2}{4 \pi^{2}}\\ \\\\L = 0.9929 m$

When the pendulum is moved to a new location, the period becomes 1.99782 s.

We have concluded that length is constant, hence, we can find the new acceleration due to gravity, $g_n$ :

$0.9929 = \frac{g_n * 1.99782^2}{4\pi^{2}} \\\\\\0.9929 = 0.1011 g_n$

Therefore:

$g_n = 0.9929/0.1011\\\\\\g_n = 9.821 m/s^2$

The difference between the new acceleration due to gravity, $g_n$ and the former acceleration due to gravity, g, will be:

$g_n - g$ = $9.821 - 9.8$ = $0.021 m/s^2$

The acceleration due to gravity differs by a value of $0.021 m/s^2$ at the new location.

7 0

3 years ago

Read 2 more answers

How are Mercury and Earth's moon similar?

Brut [27]

In general, the surface of Mercury is similar to the Moon (i.e. heavily cratered due to a lack of a heavy atmosphere to erode away primordial impacts). However, there are some key differences: 1) There are few maria on Mercury and they are small.

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3 years ago

Two people are trying to pull a 5-kilogram block in opposite directions. The first person pulls to the right with a force of 25

klasskru [66]

TEST TEST TEST TEST TEST TEST TEST

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3 years ago

What method could I use to test this hypothesis? If the mass and the volume of and object are known, then its density can be cal

Nitella [24]

Answer:

The scientific method

Explanation:

7 0

2 years ago