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mel-nik [20]
3 years ago
6

An electric car is being designed to have an average power output of 4,600 W for 2 h before needing to be recharged. (Assume the

re is no wasted energy.)
How much energy would be stored in the charged batteries? =J
The batteries operate on 80 V. What would the current be when they are operating at 4,600 W? =A
To be able to recharge the batteries in 1 h, how much power would have to be supplied to them? =W
Physics
1 answer:
MAVERICK [17]3 years ago
7 0

Answer:

a)3312 x 10⁴ J

b)I = 57.5 A

c)9200 W

Explanation:

Given that

P =4600 W

Time t= 2 h = 2 x 3600 s= 7200 s

We know that

1 W = 1 J/s

a)

Energy stored in the battery = P .t

                                              =4600 x 7200 J

                                            =3312 x 10⁴ J

b)

We know that power P given as

P = V .I

V=Voltage  ,I =Current

4600 = 80 x I

I = 57.5 A

c)

The energy supplied = 4600 x 2 = 9200 W

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Answer:

D. Pauli's exclusion principle

Explanation:

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I hope you find this information useful and interesting! Good luck!

6 0
3 years ago
A block weighs 15 n and is suspended from a spring that is attached to the ceiling. the spring stretches by 0.075 m from its uns
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We can salve the problem by using the formula:

F=kx

where F is the force applied, k is the spring constant and x is the stretching of the spring.


From the first situation we can calculate the spring constant, which is given by the ratio between the force applied and the stretching of the spring:

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By using the value of the spring constant we calculated in the first step, we can calculate the new stretching of the spring when a force of 33 N is applied:

x=\frac{F}{k}=\frac{33 N}{200 N/m}=0.165 m

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frez [133]

Answer:

The Heavier Firefighter

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