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Nataly_w [17]
3 years ago
8

The gravitational potential energy of an object is equal to its weight multiplied by its

Physics
1 answer:
Elina [12.6K]3 years ago
3 0

Answer:

Height above a surface

Explanation:

Gravitational potential energy is the energy which an object possesses due to its position above a surface.

It is also the amount of work a force has to do in order to bring an object from a particular position to a point of reference.

It is given mathematically as:

P. E. = m*g*h

where m = mass of the body

g = acceleration due to gravity

h = height above a surface

m*g represents the weight of the object.

Hence, Gravitational potential energy is the product of an object's weight and its height above a surface/reference point.

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A 100.0-kg bakery sign hangs from two thin cables as shown.
harina [27]

Answer:

1. T₁ = 500 N

2. T₂ = 866 N

Explanation:

Please see attached photo for the diagram.

Thus, we can obtain obtained the value of T₁ and T₂ as follow:

1. Determination of T₁

Angle θ = 30

Hypothenus = 100 kg

Opposite = T₁ =?

Sine θ = Opposite /Hypothenus

Sine 30 = T₁ / 100

Cross multiply

T₁ = 100 × Sine 30

T₁ = 100 × 0.5

T₁ = 50 Kg

Multiply by 10 to express in Newton

T₁ = 50 × 10

T₁ = 500 N

2. Determination of T₂

Angle θ = 60

Hypothenus = 100 kg

Opposite = T₂ = ?

Sine θ = Opposite /Hypothenus

Sine 60 = T₂ / 100

Cross multiply

T₂ = 100 × Sine 60

T₂ = 100 × 0.8660

T₂ = 86.6 Kg

Multiply by 10 to express in Newton

T₂ = 86.6 × 10

T₂ = 866 N

5 0
3 years ago
What is the repulsive force between two pith balls that are 10.0 cm apart and have equal charges of -40.0 NC?
galina1969 [7]

Answer:

So the repulsive force between the pith ball will be 1.44\times 10^{-3}N

Explanation:

We have given that the pith ball have the equal charge q = -40 nC =-40\times 10^{-9}C

Distance between the charges = 10 cm =0.1 m

According to coulombs law F=\frac{KQ_1Q_2}{R*2}

F=\frac{9\times 10^9\times -40\times 10^{-9}\times -40\times 10^{-9}}{0.1^2}=1440000\times 10^{-9}=1.44\times 10^{-3}N

So the repulsive force between the pith ball will be 1.44\times 10^{-3}N

5 0
3 years ago
Which best describes how magnesium and oxygen bond?
Lostsunrise [7]

Answer:

They form an ionic bond by exchanging two electrons.

Explanation:

7 0
3 years ago
Is KBr a covalent or ionic compound
raketka [301]

Answer:

Ionic Compound

Explanation:

To identify the type of chemical bond in a molecule, look at the atoms that make up the compound. If there are two nonmetals, it is a covalent bond. If the two atoms are metals, it is a metallic bond. If one atom is a metal and the other is a nonmetal, it is an ionic bond. Ionic compounds are also known as salts. You can identify KBr as an ionic compound because potassium is a metal and a salt.

Hope this helps

6 0
3 years ago
Read 2 more answers
The results from Rutherford's alpha particle scattering experiment led to
Brut [27]

Answer:

Explanation:

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7 0
3 years ago
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