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anyanavicka [17]
3 years ago
10

what happens to the current across a circuit when the voltage is doubled while the resistance is held back ​

Physics
2 answers:
babunello [35]3 years ago
8 0
The current is directly proportional to the voltage and inversely proportional to the resistance. So doubling or tripling the resistance will cause the current to be one-half or one-third the original value
Lynna [10]3 years ago
7 0

Since the current is inversely propotional to its resistance, when the voltage is doubled the current will be one-half

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Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial spe
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Answer:

Explanation:

1.  V_{x} = V_{0} * cos\alpha ⇒ 16*cos32 ≈ 13.6 m/s (13.56)

2. V_{y} = V_{0} * sin\alpha ⇒ 16* sin32 ≈ 9.4 m/s

3. y_{max} = \frac{v_{0}^2*sin^2\alpha}{2g}= \frac{16^2*sin^232}{2*9.8} (the g (gravity) depends on the country but i'll take the average g which is 9.2m/s^2)

y_{max} ≈ 3.6677+1.5 ≈ 5.2m

4.  x_{max} = \frac{v_{0}^2*sin(2\alpha)}{g}=\frac{16^2*sin(2*32)}{9.8} ≈ 23.5m (23.47)

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Sonar signals and infrared light are are used to send messages to submarines deep under water. If we compare the two signals, wh
WARRIOR [948]
What are the statement choices?
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A level test track has a coefficient of road adhesion of 0.80, and a car being tested has a coefficient of rolling friction that
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Answer:

the unloaded braking efficiency is 84.6 %

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Given the data in the question;

by Ignoring aerodynamic resistance; we can find the theoretical stopping distance using the following formula

S = (Y_{b}( V₁² - V₂²)) / ( 2g( ηbμ + f_{rl} ± sin∅_{g}))

now given that the tracked is levelled, ∅_{g} = 0, also Y_{b} = 1.04 for level or flat road

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now, we substitute in our values to get the braking efficiency;

180ft = (1.04( (88ft/s)² - 0²)) / ( 2(32.2( (ηb/100)(0.80) + (0.018) ± sin(0°)))

180ft = 8053.76 / ( 64.4)(0.008ηb + 0.018)

180ft = 8053.76 / ( 0.5152ηb + 1.1592)

180( 0.5152ηb + 1.1592)  = 8053.76

( 0.5152ηb + 1.1592) = 8053.76 /180

0.5152ηb + 1.1592 = 44.7431

0.5152ηb = 44.7431 - 1.1592

0.5152ηb = 43.5839

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lesantik [10]

Answer:

True

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Plz say it's false if i gave out the wrong answer

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