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Maru [420]
3 years ago
9

Which of the following is an observation only? *

Physics
1 answer:
OLEGan [10]3 years ago
7 0

Answer:A

Explanation: It uses senses.

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1 point
Trava [24]

Answer:

Their number should increase

Explanation:

The photoelectric effect is a phenomenon that causes the ejection of electrons from that metal as light shined onto a metal surface. Only certain frequencies of light can cause the ejection of electrons. However, if the frequency of the incident light is too low then no electrons were ejected even if the intensity of the light was very high. If the frequency of the light was higher then electrons were able to be ejected from the metal surface even if the intensity of the light was very low.

According to the accepted wave theory, light of any frequency will cause electrons to be emitted. Kinetic energy emitted by the electrons depends upon the intensity of light.

According to the accepted wave theory, number of electrons being ejected by the metal should increase

5 0
3 years ago
What direction does current flow from a battery in a series circuit?
telo118 [61]
What's now called "Conventional current" is thought of as the flow of positive charge, from the battery's positive terminal to its negative one.

But it turns out that positive charges don't flow. The physical flow of charge is the flow of electrons. They come out of the battery's negative terminal, and carry negative charge around the circuit to the battery's positive one.
6 0
3 years ago
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How do computer get input
Vitek1552 [10]
<span> an </span>input<span> device is (a piece of </span>computer<span> hardware equipment) used to provide data and control signals to an information processing system such as a</span>computer<span> or information appliance.</span>
5 0
3 years ago
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In Seattle's speech, he states, "Yonder sky has wept tears of compassion on our fathers for centuries untold".This statement is
77julia77 [94]
It is an example of personification because personification is when human traits are give to non human things. Sky's cannot cry. 
5 0
3 years ago
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All of the halogens are____to humans.
Ymorist [56]

Answer:

b bc they are a dangerous threat to humans health

5 0
1 year ago
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