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3 years ago

14

The current running through a toaster oven is 7.5 Amperes when it is connected to 120 volts of potential difference. What is the

power rating of the toaster?

1 answer:

Dafna11 [192]3 years ago

3 0

Power rating = volts x amps

Power rating = 7.5 x 120 = 900 watts

Answer: 900 watts

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$\frac{GMm}{r^2}=\frac{mv^2}{r}\\\Rightarrow v=\sqrt{\dfrac{Gm}{r}}\\\Rightarrow v=\sqrt{\dfrac{6.67\times 10^{-11}\times 1.69065\times 10^{30}}{16.456\times 10^{9}}}\\\Rightarrow v=82780.42123\ m/s$

The orbital speed of the star is 82780.42123 m/s

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$t=\frac{2\pi r}{v}\\\Rightarrow t=\dfrac{2\pi \times 16.456\times 10^{9}}{82780.42123}\\\Rightarrow t=1249040.48419\ seconds=\dfrac{1249040.48419}{24\times 60\times 60}=14.45\ days$

The orbital period is 14.45 days

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