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3 years ago

Why do you think the astronomical unit is not used to measure distances on earth?

2 answers:

3 0

Answer:One Astronomical Unit is the distance between the Earth and the Sun, this acts as a sort of a cosmic metre stick. Astronomers don't and cannot measure distances. Distances are merely inferred from what actually has been measured, such as an angle, a relative luminosity, a time period

Explanation:

saw5 [17]3 years ago

3 0

Answer:

you would have to use decimals in the quadrillionths if you measure in meters. so 11 0s before the number

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From left to right, the three regions of a phase diagram represent the _____ of a substance.

timofeeve [1]

Your answer is D.

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According to the Brinsted -Lowry. what is an acid ? what is a base ?

sasho [114]

Answer:

According to the Brønsted definition, an acid is a substance capable of donating a proton, and a base is a substance capable of accepting a proton. ... The species giving up the proton is HCl, an acid. The species accepting the proton is water, the base. The species Cl- is the conjugate base of HCl.

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10. Given the reaction:

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Answer:

B hope help you stay happy

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3 years ago

The force of 20 N acts upon a 5kg block. What is the acceleration of the block?

charle [14.2K]

Answer:

<h2>The answer is 4 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

$a = \frac{f}{m} \\$

where

a is the acceleration

f is the force

m is the mass

From the question

f = 20 N

m = 5 kg

We have

$a = \frac{20}{5} \\$

We have the final answer as

Hope this helps you

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What elements make up duralumin( an alloy)?

Bogdan [553]

Answer:

In addition to aluminium, the main materials in duralumin are copper, manganese and magnesium.

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