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2 years ago

4. if the experiment had been repeated with frequencies 10 times lower than those in table 5.2,

1 answer:

6 0

If the experiment had been repeated with frequencies 10 times lower than those in table 5.2, then Vc will increase 10 times to the values given in the table.

<h3 /><h3>What is frequency?</h3>

It is the number of oscillations per second of the sinusoidal wave.

Vc is the voltage across the capacitor and Xc is the capacitive reactance.

Xc = - 1/2πfC

where f is the frequency and C is the capacitance of the capacitor.

If the frequency is lowered, the potential difference will increase because frequency is inversely proportional to the voltage.

Thus, Vc will increase by lowering the frequency by 10 times.

Learn more about frequency.

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An asteroid has acquired a net negative charge of 149 C from being bombarded by the solar wind over the years, and is currently

bearhunter [10]

Answer:

93.125 × 10^(19)

Explanation:

We are told the asteroid has acquired a net negative charge of 149 C.

Thus;

Q = -149 C

charge on electron has a value of:

e = -1.6 × 10^(-19) C

Now, for us to determine the excess electrons on the asteroid, we will just divide the net charge in excess on the asteroid by the charge of a single electron.

Thus;

n = Q/e

n = -149/(-1.6 × 10^(-19))

n = 93.125 × 10^(19)

Thus, it has 93.125 × 10^(19) more electrons than protons

5 0

3 years ago

A heat engine extracts 42. 53 kj from the hot reservior and exhausts 17. 69 kj into the cold reservior. what is the work done?

ludmilkaskok [199]

The answer is 24.84kJ.

We apply the expression for the work done by the heat engine is,

$W=E_{i n}-E_{o u t}$ . Putting all given values in the equation we get the final answer.

What is heat engine?

A heat engine is a machine that uses heat to generate power. It draws heat from a reservoir, uses that heat to produce work, such as move a piston or lift weights, and then releases that heat energy into the sink.
We are given:The heat input is $E_{i n}=42.53 \mathrm{~kJ}$ . The heat output is $E_{o u t}=17.69 \mathrm{~kJ}$ .
The expression for the work done by the heat engine is, $W=E_{i n}-E_{o u t}$
Substituting the given values in the above expression, we will get $W =42.53 \mathrm{~kJ}-17.69 \mathrm{~kJ}$ =24.84kJ.
Thus, the work done by the heat engine is 24.84kJ.

To learn more about heat engine visit: brainly.com/question/15735984

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6 0

2 years ago

Which word best completes the sentence?

Oksanka [162]

Answer:

it’s cosmopolitan

Explanation:

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8 0

3 years ago

Which types of heat transfer that allows heat to flow from hot objects to colder object? A. convection, but not conduction or ra

disa [49]

I think the correct answer from the choices listed above is option D. The types of heat transfer that allows heat to flow from hot objects to colder object are <span>convection and conduction, but not radiation. Convection and conduction heat transfer happens only when a medium is present while radiation do not need a radiation to occur.</span>

5 0

4 years ago

The mass of a single gold atom is 3.27×10-22 grams. how many gold atoms would there be in 236 milligrams of gold?

blsea [12.9K]

The amount of gold atoms could be calculated by dividing the total weight of the gold with the mass of a single gold atom. Just convert the given weight to grams then divide it with 3.27x10^-22 grams. The answer would be 7.22x10^20.

8 0

3 years ago

Read 2 more answers