3 years ago

What is great summary in physical science?

1 answer:

5 0

Physical Science is the study of non-living systems, as opposed to a study of biological sciences or living systems. It consists of physics, chemistry, astronomy and earth science. It also includes scientific method and experimentation

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When a substance gains electrons, is it positively or negatively charged?

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Answer:

negative charge

Explanation:

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2 years ago

The mineral quartz has a chemical formula of SiO2. What is the formal name<br> for this compound?

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Silicon Dioxide

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The range of all electromagnetic radiation is known as the

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B.) <span>The range of all electromagnetic radiation is known as the "Electromagnetic Spectrum"

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</span>

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2 years ago

A 0.12-kg metal rod carrying a current of current 4.1 A glides on two horizontal rails separation 6.3 m apart. If the coefficien

Neporo4naja [7]

Answer:

The magnetic field is $B = 8.20 *10^{-3} \ T$

Explanation:

From the question we are told that

The mass of the metal rod is $m = 0.12 \ kg$

The current on the rod is $I = 4.1 \ A$

The distance of separation(equivalent to length of the rod ) is $L = 6.3 \ m$

The coefficient of kinetic friction is $\mu_k = 0.18$

The kinetic frictional force is $F_k = 0.212 \ N$

The constant speed is $v = 5.1 \ m/s$

Generally the magnetic force on the rod is mathematically represented as

$F = B * I * L$

For the rod to move with a constant velocity the magnetic force must be equal to the kinetic frictional force so

$F_ k = B* I * L$

=> $B = \frac{F_k}{L * I }$

=> $B = \frac{0.212}{ 6.3 * 4.1 }$

=> $B = 8.20 *10^{-3} \ T$

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3 years ago

Cold plasma used in TVs is different from the solar plasma because ___________.

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Answer: B i believe

Explanation:

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3 years ago