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djverab [1.8K]
3 years ago
13

Which are precautions to take when working with heat and fire?

Physics
1 answer:
shtirl [24]3 years ago
3 0
Always wear protected face gear and body gear, make sure you have an adult present and a fire extinguisher
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Explain what happens to particles in diffusion. What causes diffusion?
vlabodo [156]
<u><em>Diffusion:
</em></u><em> in diffusion particles move from area of higher concentration to the area of lower concentration..
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8 0
3 years ago
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A student walks a distance of 3 km in 20 minutes calculate his average speed
serg [7]

Answer:

His average speed is 0.15 kilometer per minute or 2.5 meters per second.

Explanation:

average speed = distance/time

x = 3 km/20 minutes

x = 0.15

—

x = 3000 m/1200 s

x = 2.5

4 0
3 years ago
Which of the following is not a characteristic that geologists use to identify minerals?
VikaD [51]
Geologists do not use a minerals color or streak to identify them because some minerals can have the same streak and color but the correct answer is
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5 0
3 years ago
A system proposed by the U.S. Navy for underwater submarine communication, called ELF (for extremely low frequency), operates wi
kow [346]

Answer

Wavelength= 30*20^8/30=10^7m

Explanation:

Velocity = frequency *wavelength

We're frequency=30HZ

Velocity of light= 3*10^8m/s

Wavelength= 30*20^8/30=10^7m

Explanation:

7 0
3 years ago
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Which of the following is a typical property of an ionic compound
Yanka [14]

The answer is C.

Ionic compounds are those that bring together anions and cations bonded together by ionic bonds. The electrostatic forces of the different charges are significant in the bonds that make them strong hence require high energy to break them (high melting point).  Due to the regular structure of ionic compound that tend to form lattices in solid form, when struck, they shatter along the lines of weakness of the lattice.  

6 0
3 years ago
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