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e-lub [12.9K]
1 year ago
6

The total charge that an automobile battery can supply without being recharged is given in terms of ampere-hours. A typical 12 V

battery has a rating of 60 ampere-hours (60 A for 1 h, 30 A for 2 h, and so on). Suppose that you forget to turn off the headlights in your parked automobile. If each of the two head-lights draws 3.8 A, how long will it be before your battery is dead?
Physics
1 answer:
Lelechka [254]1 year ago
6 0

Answer:

7.894 Hours.

Explanation:

Based on information number hours that this battery will last with give load  has mathematical relation of.

t = \frac{60Ah}{load in amperes.}

with load 60A t =  1h, 30A t = 2h so on and forth.

two head lights draw total current of 2x3.8A = 7.6A.

putting this in above relation gives.

t = \frac{60Ah}{7.6A}=7.894 h.

That is how long will it be before battery is dead.

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Answer:

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Explanation:

Generally the velocity attained by the sled after t = 3.10 s is mathematically evaluated using the kinematic equation as follows

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So

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=> s =  +  \frac{1}{2} * 13.5 *  3.10^2

=> s =64.87

Now when sled stops its the final velocity is v_f =  0 m/s while the initial velocity will be the velocity after its acceleration i.e v  =  41.85 \ m/s

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v_f  =  v  +  a_1t_1

Here  a_1 =  - 4.65, the negative sign shows that it is deceleration

So

           0  =  41.85  - 4.65 *  t_1

=> t_1 =  9 \  s

3 0
1 year ago
Which of the following best describes a capacitor?
galben [10]

Answer:

B

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A capacitor consists of two or more parallel conductive (metal) plates. They are electrically seperated by an insulating material (ex: air, mica,ceramic etc.) which is called as Dielectric Layer

Due to this insulating layer, DC current can not flow through the capacitor.But it allows a voltage to be present across the plates in the form of an electrical charge.

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Answer:8h

Explanation:

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The correct option is D. 
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Every winter I fly home to Chicago. It takes 3 hours. What is my average speed?
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It depends on where you live when you're not visiting Chicago. We need to know the distance of the trip.

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