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Fiesta28 [93]
3 years ago
8

Science and math people where you at

Physics
1 answer:
PilotLPTM [1.2K]3 years ago
8 0
For the second question you’re solving for resistance. resistance= voltage/ current. 120/0.5= 240. the answer is 240 ohms
for the third question you would do 2*4 since it’s asking for voltage, the answer is 8 volts :)
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A radioactive isotope of the element potassium decays to produce argon. If the ratio of argon to potassium is found to be 31:1,
iris [78.8K]

Answer:

Explanation:

Argon to potassium ratio after 1 half life = 1:1

After 2 half lives = 75/25= 3:1

After 3 half lives = 87.5/12.5= 7:1

After 4 half lives = 93.75/6.25 = 15:1

After 5 half lives = 96.875/3.125 = 31/1

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3 years ago
What happens to the atomic number of an atom when the number of neutrons in the nucleus of that atom increases? a It decreases b
kupik [55]

Answer:

It remains the same

Explanation:

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2 years ago
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8. An airplane is flying at 200 m/s when it touches the ground at the airport. It has a constant negative acceleration, and slow
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Answer:

Explanation:

Given

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v² = u²+2as

4² = 200²+2a(4000)

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a = - 39,984/8000

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</span>
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