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4 years ago

11

identify the Transformations that take place when you use an electric heater. begin with the transformations that take place in

a hydroelectric power plant and end with the energy produced by the heater and it's fan

1 answer:

galben [10]4 years ago

3 0

It is a electrical change

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A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 50.2 s.

lorasvet [3.4K]

Explanation:

(a) The period of a wave is the time required for one complete cycle. In this case, we have the time of five cycles. So:

$T=\frac{t}{n}\\\\T=\frac{50.2s}{5}\\T=10.04s$

(b) The frequency of a wave is inversely proportional to its period:

$f=\frac{1}{T}\\f=\frac{1}{10.04s}\\f=0.01Hz$

(c) The wavelength is the distance between two successive crests, so:

$\lambda=30.2m$

(d) The speed of a wave is defined as:

$v=f\lambda\\v=(0.1Hz)(30.2m)\\v=3.02\frac{m}{s}$

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3 years ago

What is the seventh planet from the sun?

stiv31 [10]

The seventh planet from the sun is Uranus.

7 0

3 years ago

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who needs more friends on here go to my profile and hit thank you button and friend request and whoever do it first get brianlis

qwelly [4]

Answer:

BET SHORTY

Explanation:

THX

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3 years ago

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Suppose that a car traveling to the west (the - x direction) begins to slow down as it approaches a traffic light. Which stateme

Amanda [17]

Answer:

(A) it's acceleration is negative but but it's velocity is positive

Explanation:

In the question it is given that begins to slow down so its speed is decreasing it is does not means that its speed is negative

For example let first the velocity of the car is 30 m/sec and when its velocity decreases it becomes 20 m/sec in 5 sec

So it is not negative at all

Now the acceleration is the rate of change of velocity

$a=\frac{dv}{dt}$

$a=\frac{v_2-v_1}{dt}=\frac{20-30}{5}=-2 m/sec^2$

So acceleration is negative here

So option (a) will be the correct option

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3 years ago

What is the mass of a 5000 N car on Earth?

puteri [66]

Answer:

510.2kg

Explanation:

use w=mg then put the value you will get answer

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3 years ago