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miss Akunina [59]
3 years ago
5

19 points.

Physics
2 answers:
AveGali [126]3 years ago
6 0

#9). the <em>last </em>statement is true

Calculation using Ohm's Law:  

It helps a lot if you know what Ohm's Law says.

It says: Current = (voltage) / (resistance)

Current = (500 volts) / (250 ohms)

<em>Current = 2 Amperes</em>

iris [78.8K]3 years ago
6 0

the answer is D,  

-https://en.wikipedia.org/wiki/Series_and_parallel_circuits

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To get the density of the material, the formula would be:

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Here in this problem, we are given a mass of 565 g which occupies a volume of 50 cm^3.

So plugging the data in the above formula to find the density:

Density = \frac { 565 } { 50 } = 11.3

From the table, we can see that the material is Lead which has a density of 11.3c/cm^3.

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Since repeated measurements are taken and the average and 95% confidence interval are calculated, the possibility of the lack of agreement being a random error has been minimized or even eliminated.

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