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3 years ago

10

in a situation to choose energy respurces between hydroelectric power and thermal power, what would be your choice? give reasons

to your answer

1 answer:

DaniilM [7]3 years ago

6 0

Answer:

Hydroelectric power

Explanation:

The Hydroelectric power is more green than the thermal power. It will not give out the smoke that thermal power will

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What is the net force acting upon this object? *

AnnZ [28]

2 N Right

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3 years ago

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In Kingda Ka roller coaster starts with a speed of 6 m/s at the top of the drop and attains a speed of 50.3 m/s when it reaches

Jobisdone [24]

Explanation:

According to the law of conservation of energy,

$P.E_{i} + K.E_{i} = P.E_{f} + K.E_{f}$ ......... (1)

As we know that, P.E = mgh

and, K.E = $\frac{1}{2}mv^{2}$

Therefore, putting these values of P.E and K.E into equation (1) as follows.

$mgh + m \frac{(6)^2}{2} = 0 + m \frac{(50.3)^2}{2}$

Now, initial case is that its starts with 50.3 m/s at bottom.

P.E = m and PE = 0

And, as it reaches the height h,

P.E = mgh

So, K.E will be m

Hence, speed = 6 m/s

4 0

3 years ago

Fill in the blank with one of these words:

ale4655 [162]

Answer:

4. radiation

5. ultraviolet radiation

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3 years ago

What is the current in a 160V circuit if the resistance is 200?

Novosadov [1.4K]

V=120 v=IR
R=2ø
I = ? I= v/r
I= 120r/ 10
Answer 12Amps

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3 years ago

You are given three iron rods. Two of the rods are magnets but the third one is not. How could you use the three rods to definit

const2013 [10]

Answer:

A magnets always have two poles (north and south), the unmagnetized rod can be identified using properties of the poles of a magnet.

Explanation:

The law of magnetism states that like poles repel, while unlike poles attract. The simple experiment here is to use two rods at a time, keeping one of the poles of the first rod constant, while changing the poles of the other rod.

When the two rods are magnets, attraction and repulsion would be observed between the rods. But for the case of unmagnetized rod and one of the magnetised rod, only attraction is observed between the poles.

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3 years ago