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Olenka [21]
3 years ago
10

What the balance electrons for calcium​

Physics
1 answer:
soldi70 [24.7K]3 years ago
5 0

Answer:

its two valence electrons

Explanation:

Calcium is a group 2 element with two valence electrons. Therefore, it is very reactive and gives up electrons in chemical reactions.

UR WELCOME!! :)

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Monochromatic light is incident on a metal surface, and electrons are ejected. If the intensity of the light increases, what wil
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Answer:The rate of ejection of photoelectrons will increase

Explanation:

If the frequency of incident monochromatic light is held constant and its intensity is increased, the rate of ejection of photoelectrons from the metal surface increases with increase in intensity of the monochromatic light. More current flows due to more ejection of photoelectrons.

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3 years ago
To determine the height of a flagpole, Abby throws a ball straight up and times it. She sees that the ball goes by the top of th
Kryger [21]

Answer:

H = 10.05 m

Explanation:

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so here the total time of the motion above the top point of pole is given as

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H = \frac{v_f + v_i}{2}t

H = \frac{22.5 + 17.64}{2} (0.5)

H = 10.05 m

5 0
2 years ago
The heat pump is designed to move heat. This is only possible if certain relationships between the heats and temperatures at the
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Answer:

There are no answer chooses to this question

Explanation:

7 0
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Suppose you are standing at the earth's geographic north magnetic pole, the place on the earth's surface that compasses point to
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Since the compass is free to swivel in any direction, the compass would point up, since it is at the earth's geographic north magnetic pole, the place on the earth's surface that compasses point toward.

So, the compass would point up.

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A ball of mass m falls vertically, hits the floor with a speed ui , and rebounds with a speed u f . what is the magnitude of the
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Answer:

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5 0
2 years ago
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