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denpristay [2]
3 years ago
8

A electric heater that draws 13.5 a of dc current has been left on for 10 min. how many electrons that have passed through the h

eater during that time? (e = 1.60 Ã 10-19 c)
Physics
1 answer:
kicyunya [14]3 years ago
3 0
By definition, Ampere is a unit of current which is a measure of the amount of charge passing through a point in a circuit per unit  of time, with an equivalent charge of 1.602 x 10^(-19) Coulomb per electron. To determine the number of electrons passing through the heater, we use the definition of the current. We calculate as follows:

13.5 A = 13.5 C per second
Charge = 13.5 C/s (10 min) ( 60 s / 1 min)
Charge = 8100 C 

Number of electrons = 8100 C / 1.602 x 10^(-19) C per electron
Number of electrons = 5.1 x 10^22 electrons

Therefore, there are 5.1 x10^22 electrons that assed through the heater for 10 minutes.
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0.686 g of ice melts each second.

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As per the question:

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5 0
3 years ago
An archer fires an arrow at a castle 230 m away. The arrow is in flight for 6 seconds, then hits the wall of the castle and stic
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(b). The angle is 39.90°.

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R =u\cos\theta t

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We need to calculate the height

Using vertical component

H=u\sin\theta t-\dfrac{1}{2}gt^2

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(b). We have already calculate the angle.

Hence, (a). The initial speed of the arrow is 49.96 m/s.

(b). The angle is 39.90°.

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6 0
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