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3 years ago

Perform the following calculations and give your answer with the correct number of significant figures

Physics

1 answer:

love history [14]3 years ago

3 0

Answer:

see below

Explanation:

a. 0.1886 x 12 =2.2632

This has 2 sig figures so the answer can only have 2 sig figures

2.3

b. 2.995 - 0.16685 =2.82815

The most accurate in the problem is to thousands place so our answer can only be accurate to the thousands place

2.828

c. 910 x 0.18945=172.3995

The least number of significant figures is 3 so the answer can only have 3 significant figures

172

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WITCHER [35]

Answer:

Image is twice as large as the object, and inverted

Explanation:

When an object is placed in front of a mirror, the mirror produces an image.

The magnification of the image is a number telling how much the size of the image is enlarged/diminished with respect to the object.

It is given by

$M=\frac{y'}{y}$

where

M is the magnification

y' is the size of the image

y is the size of the object

In this problem,

M = -2

This means that:

$y'=My\\y' = -2y$

So, we can conclude the following:

- The size of the image is twice the size of the real object

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Svetlanka [38]

Answer:

The estimated age of the universe is $4.42*10^{17}\ seconds$

Explanation:

Time Units Conversion

Sometimes we need to express magnitudes in different units, depending on the specific situation handled in the question or problem at hand. Magnitudes like length, time, mass, temperature, pressure, etc., can be expressed in several different units.

The most common units for time are years, months, days, hours, minutes, and seconds. There are 3,600 seconds in one hour and 24 hours in one day.

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Speed = wavelength × frequency

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2 years ago

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I hope that will help.

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