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Helga [31]
4 years ago
9

One type of substance is a _________, which contains only one type of atom.

Physics
1 answer:
USPshnik [31]4 years ago
3 0
<span>One type of substance is a >>element<<, which contains only one type of atom.</span>
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Which step of the scientific method involves obtaining information through the senses
Ilia_Sergeevich [38]
Doing the experiment
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4 years ago
One star has a magnitude of -1.5 and another star has a magnitude of +0.6. What is the ratio of brightness of these two stars?
In-s [12.5K]

Answer:

7

Explanation:

The  \ ratio \  of \  brightness  \  of  \ these \  two  \ stars \  is:

\dfrac{b_{first \ star }}{b _{second \ star }}= 2.512^{(m_{(second \ star )} - (m_{first \ star } ))}

\dfrac{b_{first \ star }}{b _{second \ star }}= 2.512^{(0.6 - (-1.5 ))}

\dfrac{b_{first \ star }}{b _{second \ star }}= 2.512^{(2.1)}

\dfrac{b_{first \ star }}{b _{second \ star }}= 6.9

\mathbf{\dfrac{b_{first \ star }}{b _{second \ star }} \simeq 7}

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3 years ago
When you swim, your hands apply a force backward on the water. The reaction to this force is________
castortr0y [4]

Explanation:

THERE FORE THE REACTION IS FRICTION FORCE.

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7 0
3 years ago
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When a bowling ball hits the ground the energy goes from
Tamiku [17]
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4 years ago
An electron is accelerated through 2400 V from rest and then enters a region in which there is a uniform 1.70 T magnetic field.
aalyn [17]

Answer:

Explanation:

Let v be the velocity acquired by electron in electric field

V q = 1/2 m v²

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2400 x 1.6 x 10⁻¹⁹ = .5 x 9.1 x 10⁻³¹ x v²

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= 1.7 x 1.6 x 10⁻¹⁹ x 29.05 x 10⁶

= 79.02 x 10⁻¹³ N .

Minimum force will be zero when electron moves along the direction of magnetic field .

5 0
3 years ago
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