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WARRIOR [948]
3 years ago
14

PLSSS HELP I WILL GIVE U BRAINLIEST annabelle and jose are building a complete circuit for their science inquiry in class they w

ant the lightbulb to turn on and off so they install a switch the light switch can be used to open and close their circuit Given the information above, which statement below must be true about using a switch in a circuit?
A. The switch must use a conductor such as rubber to open the circuit and light the bulb.
B. The switch must use an insulator such as rubber to close the circuit and light the bulb.
C. The switch must use an insulator such as copper to open the circuit and light the bulb.
D. The switch must use a conductor such as copper to close the circuit and light the bulb.
Physics
2 answers:
AlekseyPX3 years ago
8 0

Answer:the answers is D

Explanation:

all the others answers choices are incorrect

Agata [3.3K]3 years ago
6 0

Answer:

i think its C hope this is rhight have a good day

Explanation:

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One speed skater starts across a frozen lake at an average speed of 8 m/s. Ten seconds later, a second speed skater starts from
Luba_88 [7]

Answer:

40 s

Explanation:

After 10 seconds, the first skater would have a 8m/s * 10s = 80 m head start

Let t be the number of seconds after the second skater starts will the second skater overtake the first skater

The distance traveled by the first skater after t seconds is

s_1 = v_1t = 8t

Similarly the distance traveled by the 2nd skater after t seconds is

s_2 = v_2t = 10t

Since the 2nd skater catches up to the 1st one after 80 m behind, the distance traveled by the 2nd one must be 80m greater than the distance of the 1st skater

s_2 = s_1 + 80

We can substitute s_1 = 8t, s_2 = 10t

10t = 8t + 80

2t = 80

t = 80 / 2 = 40 s

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3 years ago
A camper walks away from camp. He walks 23.72m north, then 39.25m south and
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Answer:

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Explanation:

Total N-S displacement

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2 years ago
Which best explains the direction of the moving force of air?. . A.. from warm temperatures to cold temperatures. . B.. from are
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Out of the choices given, the best choice to explain the direction of the moving force of air is from area o high pressure to areas of low pressure. The correct answer is B. 
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A 60 kg runner accelerates during a race at 3m/s2. what force is exerted on the earth with each step
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Answer:

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Explanation:

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