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tia_tia [17]
3 years ago
13

What are your thoughts about Russia getting banned from the 2020 Olympics and 2022 World cup?

Physics
1 answer:
irina1246 [14]3 years ago
4 0
It might be a good thing if they did something wrong
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Which of ONE of the following four elements has the most metallic properties?
olchik [2.2K]

Answer:

12 (Magnesium- Mg)

Explanation:

Looking at the four numbers, we have:

Magnesium, Silicon, Sulfur, and Chlorine.

We can eliminate two of the answers immediately just by looking at the periodic table.

Sulfur and Chlorine are on the nonmetal side of the periodic table. So that's <em>definitely</em> not it. That leaves Magnesium and Silicon.

Silicon is a Metalloid. Magnesium is an Alkaline earth Metal.

Metaloids are elements that have a mix of both<em> metal</em> and<em> nonmetal </em>properties (luster, how it feels, etc.). Since it's a MIX and Magnesium is just straight METAL-

We can say Magnesium has the most metallic properties.

hope this helps!!

7 0
3 years ago
The number of revolutions of two pulleys is inversely proportional to their diameters. If a 24-inch diameter pulley making 400 r
Fed [463]

Answer:

C) 1200 rpm

Explanation:

D_1 = Diameter of bigger pulley = 24 inch

D_2 = Diameter of smaller pulley = 8 inch

N_1 = Speed of bigger pulley = 400 rpm

N_2 = Speed of smaller pulley

The relation between revolutions per minute and diameter is that they are inversely proportional.

\frac{N_1}{N_2}=\frac{D_2}{D_1}\\\Rightarrow \frac{400}{N_2}=\frac{8}{24}\\\Rightarrow N_2=\frac{24\times 400}{8}\\\Rightarrow N_2=1200\ rpm

The number of revolutions per minute of the smaller pulley is 1200 rpm

7 0
3 years ago
​How are particles in motion and temperature related?
Artemon [7]
1) How are particles in motion and temperature related?

Temperature is the measure of heat. The kinetic energy of particles in motion is determined by the temperature.  The higher the temperature, the higher the kinetic energy of the particles (basically, the hotter it is the faster the particles move).

2) How does a thermometer work?

A thermometer measures the average kinetic energy of the particles around the thermometer.  As seen in 1), the kinetic energy defines the temperature, so measuring the energy of the particles can show you the temperature of the object.

3) What are temperature scales, list them and give examples.

Temperature scales are pretty much systems with which we compare different temperatures.  The three widely used temperature scales today are Fahrenheit, Celsius, and Kelvin. All three are used in different countries and mainly for different purposes. Fahrenheit is used only in the United States and a few other countries around the world, while Celsius is excepted by nearly the entire rest of the world. Kelvin is used primarily in the scientific setting.

4) Define volume.

Volume is pretty much the amount of three-dimensional space an object or substance takes up.  For example, a liter is a unit of measurement of volume.  A two-liter bottle of soda means it contains the amount of soda that fills up 2-liters worth of three-dimensional space.

I hope this helped.
5 0
3 years ago
The velocity of a body of mass 20kg decreases from 20m/s to 5m/s in a distance of 100 m force on body is ?​
MrRissso [65]

Answer:

hope it helps brainliest pls. and the answer is the one that is circled in red color.

Explanation:

8 0
3 years ago
Modern telescopes are capable of seeing bright galaxies up to about
marishachu [46]

Answer:

Modern telescopes are capable of seeing bright galaxies up to about 10000 millions light years away

Explanation:

A telescope is a tool that astronomers use to see faraway objects. Most telescopes work by using curved mirrors to gather and focus light from the night sky. The bigger the mirrors or lenses, the more light the telescope can gather.

Modern telescopes gather information from the electromagnetic spectrum far beyond the range of visible light.

The farthest bright galaxies, that the modern telescope is capable of seeing is 10000 millions light years away.

5 0
4 years ago
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