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zheka24 [161]
3 years ago
6

Which statement describes a controlled experiment?

Physics
1 answer:
UNO [17]3 years ago
8 0

Answer:The answers is c, a group exposed to the factor being tested, and a group that isn’t exposed to the factor tested.

Explanation:

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A particle with a mass of 6.64 × 10–27 kg and a charge of +3.20 × 10–19 C is accelerated from rest through a potential differenc
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Answer:

Explanation:

Given that,

Mass m = 6.64×10^-27kg

Charge q = 3.2×10^-19C

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The force in a magnetic field is given as Force = q•(V×B)

Since V and B are perpendicular i.e 90°

Force =q•V•BSin90

F=q•V•B

So we need to find the velocity

Then, K•E is equal to work done by charge I.e K•E=U

K•E =½mV²

K•E =½ ×6.64×10^-27 V²

K•E = 3.32×10^-27 V²

U = q•V

U = 3.2×10^-19 × 2.45×10^6

U =7.84×10^-13

Then, K•E = U

3.32×10^-27V² = 7.84×10^-13

V² = 7.84×10^-13 / 3.32×10^-27

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V=√2.36×10^14

V = 1.537×10^7 m/s

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F=q•V•B

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