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4 years ago

Astrology is considered which of the following types of science?

Physics

2 answers:

Misha Larkins [42]4 years ago

8 0

Answer:

A- Pseudoscience

Explanation:

Astrology is now considered a pseudoscience as it cannot be proven scientifically.

Murljashka [212]4 years ago

5 0

The answer is A. Astrology is pseudoscience because it is not scientifically backed.

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Ronch [10]

ANSWER:
Ca(OH)2 shows a decrease of solubility with the increase of temperature.

Hope it helps u! :)

6 0

3 years ago

Read 2 more answers

If the density of the fuel is 0.821 g/ml, what mass of fuel has the airplane taken on?

bija089 [108]

<em>Mass of fuel has the airplane took on = 167.89 kg</em>

$\boxed{\boxed{\bold{Further~explanation}}}$

Density is a quantity derived from the mass and volume

density is the ratio of mass per unit volume

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of mass

The unit of density can be expressed in g / cm3 or kg / m3

Density formula:

$\large{\boxed{\bold{\rho~=~\frac{m}{V} }}}$

ρ = density

m = mass

v = volume

A common example is the water density of 1 gr / cm3

If we look at fuel capacity data such as Airbus which has a maximum capacity of 204, 5 liters then the mass of fuel it carries is

ρ = 0.821 gr / ml = 0.821 kg / l

mass = ρ . V

mass = 0.821 kg / l . 204.5 liters

mass = 167.89 kg

So the mass of fuel carried by aircraft is 167.89 kg

$\boxed{\boxed{\bold{Learn~more}}}$

density and molarity of the solution brainly.com/question/8151398

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the relative density of the fuel

brainly.com/question/10889330

Keywords: density, mass, volume, aircraft, fuel, derivative quantities

7 0

3 years ago

Read 2 more answers

In the solar panel system presented in the video, which of the following was necessary to generate usable electrical current for

anastassius [24]

Answer:

A and B are both requirements for a solar panel to generate usable current at home.

Explanation:

Solar panel operates through a group of cells, where each one of them captures/convert electrons making them move from one polarised region to another. The excited electrons can move from a region in excess of electrons (p region) to a region with a lack of electrons (n region).

This physical effect of electron moving from one side to another creates what we know as current flow.

This current flow from a solar panel does not vary with time in a determined frequency, so it's constant. This is the definition of a DC current. Since the household devices work with AC (variable sinusoidal current Alternate Current) a converter DC to AC is required.

Due to the fact that the solar panels only operate in the day when they recibe direct sunlight, there is the need to have batteries to store the energy for the night and the times where the sunlight is not enough to provide enough electron flow.

7 0

4 years ago

What type of rock is limestone? Describe how a limestone rock is likely to change over a long period of time.

tatuchka [14]

Answer:

Limestone is a sedimentary rock

Explanation:

1. Limestone is a carbonate sedimentary rock made up of calcite(CaCO₃).This rock type forms calcareous shells and tests of organisms that was deposited in a sedimentary basin.

Limestone is used in building and construction works. It also finds application in chemical industries.

2. Over a long period of time, we would take a look at the rock "limestone" through the rock cycle.

Limestone being a sedimentary rock would be converted to marble, a metamorphic rock if subjected to metamorphic conditions over an extensive period of time. With series of metamorphic transformation, marble can grade to higher metamorphic facies of rocks as it combines with other minerals in the crust. The minerals would eventually change and as the changed rock approaches its melting temperature, melt would result.

From the other spectrum, limestone can be weathered if subjected extensively to denudation forces such as wind, water and glaciation. Water is more potent for the chemical weathering of limestone. Limestone would easily and readily dissolve in it over a long period of time.

7 0

3 years ago

An electric field of 710,000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of

Anni [7]

Answer:

The magnitude of force is $4.26\times 10^{- 6} N$