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3 years ago

A reaction where one element takes the place of another element in a compound is an example of which type of reaction?

Physics

1 answer:

yKpoI14uk [10]3 years ago

4 0

Answer:

single-replacement

A single-replacement reaction is a chemical reaction in which one element replaces another in a compound.

Explanation:

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Apply the general results obtained in the full analysis of motion under the influence of a constant force in Section 2.5 to answ

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y(i) = h

v(y.i) = 0

Explanation:

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3 years ago

An astronaut on a space walk floats a little too far away

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Answer:

He can throw it away from himself.

Explanation:

Newtons Third Law says that everything has an equal, yet opposite reaction on other objects.

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The law of universal gravitation states that a gravitational force exists between all objects in the universe. This force is dir

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Answer:

D. It has been demonstrated to be without exception under certain stated conditions.

Explanation:

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Sir Isaac Newton's law of gravitation stated "A gravitational force exists between all objects in the universe. This force is directly proportional to the masses of the two objects and inversely proportional to the distance between them."

His law explained that every body in the universe attracts every other body. It explained that it is not just Earth that pulls us towards it. But even sun and moon has their own gravitational pull and so does all other objects. It is just that the Gravitational pull of some objects is negligible.

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You measure the power delivered by a battery to be 4.26 W when it is connected in series with two equal resistors. How much powe

gtnhenbr [62]

Answer:

<em>The power delivered by the battery is 17.04 W</em>

Explanation:

Power through a circuit is given as

P = IV ....1

where P is the power

I is the current through the circuit

V is the voltage through the circuit

The voltage in a circuit is given as

V = IR ....2

Let us take the value of each resistor as equal to R

when connected in series, the total resistance will be

$R_{t}$ = R + R = 2R

If we assume constant voltage through the circuit, then from equation 2, the current in this case is

I = V/2R

If the resistors are connected in parallel, then the total resistance will be

$\frac{1}{R_{t} }$ = $\frac{1}{R}$ +

$R_{t}$ = R/2

The current in this case will be increased since the resistance is reduced

I = 2V/R

comparing the two situations, we can see that the current increased when connected in parallel to a ratio of

$\frac{2V}{R}$ ÷ $\frac{V}{2R}$ =

This means that the current increased 4 times

From equation 1, we can see that electrical power is proportional to the current at a constant voltage, therefore, the power will also increase by four times to

P = 4 x 4.26 = <em>17.04 W</em>

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4 years ago

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Both answers are going to be C

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