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IrinaVladis [17]
3 years ago
15

When the biker is at the top of the ramp, he has a speed of 10 m/s at

Physics
1 answer:
oksian1 [2.3K]3 years ago
8 0

Answer:

25000

Explanation:

100 x 25 x 10 = 25000

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The electricity received at an electrical substation has a potential difference of 20,000 V. What should the ratio of the turns
iren2701 [21]

The turn ratio of the transformer is 40.

<h3 />

<h3>What is a transformer?</h3>

A transformer is an electrical device that is used to step up or step down voltage.

The formula for calculating the turns ratio of a transformer is given below.

<h3> Formula</h3>
  • a = V/v.......... Equation 1

Where:

  • V = Primary voltage
  • v = Secondary voltage
  • a = Turns ratio of the transformer

From the question,

Given:

  • V = 20000 V
  • v = 500 v

Substitute the values above into equation 1

  • a = 20000/500
  • a = 40.

Hence, The turn ratio of the transformer is 40.

Learn more about transformers here: brainly.com/question/6450076

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2 years ago
a moving freight car collides with an identical one that is at rest what happen to the second car after the collison
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It moves backwards do to the impact. this is because force can not be created nor destroyed so it is transferred.<span />
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When a certain element is excited with electricity, we see three main lines in its emission spectrum: two red lines and one oran
Eddi Din [679]
The absorption spectrum would have all the wavelengths of the light source but would have black lines where the two red and one orange lines were in the emission spectrum
4 0
3 years ago
Help please! this is physics !
KATRIN_1 [288]

Answer:

4. The choose b. 0.000355

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Ans; 8.06 ×10⁴= 806×10² = 80600

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4 0
2 years ago
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strojnjashka [21]
Answer: see the graph attached (straight line, passing through the origin and positive slope).


Justification:

1) Kinetic energy and temperature are in direct proportion. That means:

i)  Being kinetic energy y and temperature x: y α x

ii) That implies: y = kx,where k is the constant of proportionality.

iii) The graph is a line that passes through the origin and has positive slope k (k = y / x).

2) The proportional relationship between kinetic energy (KE) and temperature (T) is shown by the Boltzman law, which states:

Average KE = [3 / 2] KT, where K is Boltzman's constant, whose graph is of the form shown in the figure attached.

5 0
3 years ago
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