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Jet001 [13]
3 years ago
6

I need help do in a hour

Physics
1 answer:
barxatty [35]3 years ago
5 0
3. a 4. C im sure
Ex: done it
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20. A car battery with a 12-V emf and an internal resistance of 0.050 Ω is being charged with a current of 60 A. Note that in th
topjm [15]

Answer:

Part a)

V = 15 Volts

Part b)

P = 180 Watt

Part c)

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Explanation:

Part a)

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here we know that

EMF = 12 volts

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\Delta V = 12 + (0.050)(60) = 15 Volts

Part b)

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so here we have

P = i^2 R

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P = 180 Watt

Part c)

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Rate = EMF \times i

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6 0
3 years ago
The current world-record motorcycle jump is 77.0 m, set by Jason Renie. Assume that he left the take-off ramp at 13.0° to the ho
kotegsom [21]

Answer:

The take-off speed is 41.48 \frac{m}{s}

Explanation:

Given :

Range R = 77 m

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  R = \frac{v_{o} ^{2}   }{g} \sin 2\alpha

Find the velocity from above equation,

  v_{o} = \sqrt{\frac{gR}{\sin 2 \alpha } }

  v_{o} = \sqrt{\frac{9.8 \times 77}{\sin 26} }                              ( ∵ g = 9.8 \frac{m}{s^{2} } )

  v_{o} = 41.48 \frac{m}{s}

Therefore, the take-off speed is 41.48 \frac{m}{s}

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