The height of a building is 31.0 meters.how tall is the building in kilometers?

Answers

Answer 1

Answer:

The metric system is used for the measurement of the fundamental parameters. The building is 0.031 kilometers tall when it has a height of 31.0 meters.

What are units of height?

Height has been the measure of the distance that is vertical and depicts the tallness of the object. The height of the object can be measured in feet, inches, meters, centimeters, kilometers, etc.

The conversion factor for the height from meters to kilometers is given as,

1 meter = 0.001 kilometers

Given,

Height of building = 31.0 meters

Substituting values in the conversion data the height of the building in kilometers is calculated as

1 meter = 0.001 kilometers

31.0 meters =? km

Solving further,

(31.0 meters × 0.001 kilometers) ÷ 1 meter

= 0.0310 kilometers

Therefore, the building is 0.0310 kilometers tall.

Learn more about units of height here:

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Answer 2

Answer: To find the answer, you would use Dimensional Analysis, as follows:

$31 meters * (1 kilometer)/(1000 meters) = 0.031 kilometers$

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A voltaic cell spontaneously converts chemical energy to(1) electrical energy (3) mechanical energy
(2) geothermal energy (4) nuclear energy

Answers

1 - Electrical energy
A voltaic cell is an electrochemical cell that generates electricity through redox reactions.

(1) electrical energy is your answer.

A graduated cylinder has 20 ml (cm3) of water placed in it. An irregularly shaped rock is then dropped in the graduated cylinder and the volume of the rock and water in the cylinder now reads 30 ml (cm3). The mass of the rock dropped into the graduated cylinder is 23 grams. a.) Find the volume of the rock dropped into the graduated cylinder.
b.) Find the density of the rock dropped into the graduated cylinder.

Answers

Answer:

$\boxed {\boxed {\sf v=10 \ mL \ and \ d=2.3 \ g/mL}}$

Explanation:

Answer:

Explanation:

A. Volume

The volume was found using water displacement. Subtract the initial volume from the final volume.

$final \ volume - initial \ volume$

The graduated cylinder had 20 milliliters of water (initial volume).

After the rock was added, the graduated cylinder read 30 milliliters (final volume).

Substitute the values in and subtract.

$30 \ mL- 20 \ mL$

$10 \ mL$

The volume of the rock is 10 milliliters.

B. Density

Density can be found by dividing the mass by the volume.

$d=(m)/(v)$

The mass of the rock is 23 grams. We just found the volume of 10 milliliters.

$m= 23 \ g\nd= 10 \ mL$

Substitute the values in and divide.

$d=(23 \ g)/(10 \ mL)$

$d= 2.3 \ g/mL$

The density of the rock is 2.3 grams per milliliter.

Answer:

Volume = 10 cm3

Density = 2.3g/cm3

Explanation:

volume:

30ml - 20ml = 10ml = 10cm3

density:

density = mass/volume

23/10

2.3g/cm3

The direct change of a substance from a solid to a gas is called ____.a. evaporation
c. condensation
b. sublimation
d. solidification

Answers

The direct change of a substance from a solid to a gas is called sublimination.

The answer to your question

b. sublimation

You are throwing an object with a force of 140 N. The object accelerates 19.0 m/s/s. What is the mass of the object?

Answers

Answer:

7.4

Explanation:

F = m × a

F/a = m

m = 140 / 19

m = 7.4

Use what you know about acid base reactions to explain how you could clean up an acid spill.

Answers

Use a base to stabilize it before coming in contact with the acid.

Which statement defines the heat capacity of a sample?

Answers

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

The answer is "the quantity of heat that is required to raise 1 g of the sample by 1°C (Kelvin) at a constant pressure"

Answer:

Explanation:

I just took the test twice and it wasn't D the first time

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