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Anton [14]
2 years ago
14

According to the universal law of gravitation, the force due to gravity is b. directly proportional to the square of the distanc

e between objects. d. not dependent on the distance between objects. c. inversely proportional to the distance between objects. a. inversely proportional to the square of the distance between objects. e. directly proportional to the distance between objects.
Physics
1 answer:
Nataly [62]2 years ago
7 0

According to the universal law of gravitation, the force due to gravity is a. inversely proportional to the square of the distance between objects.

<h3>What is the universal law of gravitation?</h3>

Newton's law of universal gravitation states that objects are attracted to each other in the universe with a force directly proportional to the product of their masses and inversely proportional to the square of their distance apart.

The equation that represents this law is;

F = G × M1M2 ÷ r∧2

Where,

F is the gravitational force acting between two objects

M1 and M2 are the masses of the objects

r is the distance between the centers of their masses

G is the gravitational constant.

Thus. according to the universal law of gravitation, the force of gravity is inversely proportional to the square of the distance between objects.

Learn more on universal law of gravitation here:

brainly.com/question/9373839

#SPJ1

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A typical electric refrigerator has a power rating of 500 Watts, which is the rate (J/s) at which electrical energy is supplied
Goshia [24]

Answer:

The rate of heat removed from inside the refrigerator is 300 watts.

Explanation:

By the First Law of Thermodynamics and the definition of a Refrigeration Cycle, we have the following formula to determine the rate of heat removed from inside the refrigerator (\dot Q_{L}), in watts:

\dot Q_{L} = \dot Q_{H}-\dot W (1)

Where:

\dot Q_{H} - Rate of heat released to the room, in watts.

\dot W - Rate of electric energy needed by the refrigerator, in watts.

If we know that \dot Q_{H} = 800\,W and \dot W = 500\,W, then the rate of heat removed from inside the refrigerator is:

\dot Q_{L} = \dot Q_{H}-\dot W

\dot Q_{L} = 300\,W

The rate of heat removed from inside the refrigerator is 300 watts.

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2 years ago
Now, find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide for a solution at a pH = 11. Then div
Hunter-Best [27]

Answer

1.0/5

4

IlaMends

Ambitious

2.1K answers

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Explanation:

When pH of the solution is 11.

..(1)

At pH = 11, the concentration of ions is .

When the pH of the solution is 6.

..(2)

At pH = 6, the concentration of ions is .

On dividing (1) by (2).

The ratio of hydrogen ions in solution of pH equal to 11 to the solution of pH equal to 6 is .

Difference between the ions at both pH:

This means that Hydrogen ions in a solution at pH = 7 has ions fewer than in a solution at a pH = 6

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is the following sentence true or false? the faster the particles of a substance are moving, the more energy they have.
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A 40.0 turn coil of wire of radius 3.0 cm is placed between the poles of an electromagnet. The field increases from 0 to 0.75 T
nadezda [96]

Answer:

Induced emf, V=3.76\times 10^{-4}\ V

Explanation:

We have,

Number of turns in the coil, N = 40

Radius of coil, r = 3 cm = 0.03 m

The field increases from 0 to 0.75 T at a constant rate in a time interval of 225 s.

It is required to find the magnitude of the induced emf in the coil if the field is perpendicular to the plane of the coil. The induced emf is given by :

\epsilon=\dfrac{d\phi}{dt}

\phi=NBA\cos\theta, is magnetic flux

\epsilon=NA\dfrac{dB}{dt}\\\\\epsilon=\dfrac{40\times \pi (0.03)^2\times (0.75-0)}{225}\\\\\epsilon=3.76\times 10^{-4}\ V

So, the magnitude of induced emf is 3.76\times 10^{-4}\ V.

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If the molecules in the desk in front of you are moving, then<br> why is the desk standing still?
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They shake and move around while staying put since they cannot move freely, hence being part of a solid.
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