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Ilya [14]
3 years ago
11

A car traveling 60 km/h can brake to a stop within a distance d of 20 m. If the car is going twice as fast, 120 km/h, what is it

s stopping distance? Assume the maximum braking force is approximately independent of speed.
Physics
1 answer:
lubasha [3.4K]3 years ago
4 0

40m      oaivbapiudrvbusfbdpiugahsfpuioapvbrh

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The current is defined as the ratio between the charge Q flowing through a certain point of a wire and the time interval, \Delta t:
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First we need to find the net charge flowing at a certain point of the wire in one second, \Delta t=1.0 s. Using I=0.92 A and re-arranging the previous equation, we find
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Now we know that each electron carries a charge of e=1.6 \cdot 10^{-19} C, so if we divide the charge Q flowing in the wire by the charge of one electron, we find the number of electron flowing in one second:
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3 years ago
¿Qué cantidad de calor absorbió una masa de 4 g de cinc al pasar de 20 °C a<br> 180 °C?
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