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Masteriza [31]
3 years ago
15

How does one get 8.0 A? The answer is D

Physics
1 answer:
ra1l [238]3 years ago
6 0

I don't know why the answer is D , because I can't see the list of choices.


The only way to get 8.0 Amps is by making a serious mistake.

The current in the second picture is 4.0 Amps.


If the resistors are identical, then the effective resistance of

two resistors in parallel is 1/2 the resistance of each one.


The resistance in the second picture is 1/2 the resistance

in the first picture.


Current = (voltage) / (resistance)


Cutting the resistance in half causes the current to double.


If the current was 2.0 Amps in the first picture, it's 4.0 Amps

in the second picture.

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Heat in the amount of 100 kJ is transferred directly from a hot reservoir at 1320 K to a cold reservoir at 600 K. Calculate the
Zinaida [17]

Answer:0.0909 kJ/K

Explanation:

Given

Temperature of hot Reservoir T_h=1320 K

Temperature of cold Reservoir T_l=600 K

Heat of 100 kJ is transferred form hot reservoir to cold reservoir

Hot Reservoir is Rejecting heat therefore Q_1=-100 kJ

Heat is added to Reservoir therefore Q_2=100 kJ

Entropy change for system

\Delta s=\frac{Q_1}{T_1}+\frac{Q_2}{T_2}

\Delta s=\frac{-100}{1320}+\frac{100}{600}

\Delta s=-0.0757+0.1666=0.0909 kJ/K

As entropy change is Positive therefore entropy Principle is satisfied

         

4 0
3 years ago
Which of the following is NOT a characteristic of an inner planet?. . A.. rocky. . B.. solid surface. . C.. near the sun. . D..
sveticcg [70]

Being made mostly of gas is NOT a characteristic of an inner planet. The correct answer between all the choices given is the last choice or letter D. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

3 0
2 years ago
Read 2 more answers
Which of these is an example of acceleration ?
anygoal [31]

Answer:

no picture or anything so cant anwser

Explanation:

8 0
3 years ago
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Six baseball throws are shown below. In each case the baseball is thrown at the same initial speed and from the same height h ab
Assoli18 [71]

Answer:

EXplained

Explanation:

from conservation of energy

change in potential energy = gain in kinetic energy

so as all he balls are throws from the same height thus the change in potential energy is the same for all the balls thus the gain in kinetic energy is the same for all the balls and as they have the same initial velocity thus the final velocity is the same for all the balls.

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To test the hypothesis that the population mean mu=3. 6, a sample size n=14 yields a sample mean 4. 007 and sample standard devi
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The P value for the given data set is 25127. For finding P value, we have to must find the Z value.

<h3>How to get the z scores?</h3>

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

The Z value is calculated as;

Z = \dfrac{X - \mu}{\sigma})

Z = (X - μ) / σ

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The P value for the given data set is 25127.

Learn more about z-score here:

brainly.com/question/21262765

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