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Alborosie
3 years ago
14

A transformer is to be used to step down voltage from an alternating current source from 220V to 110V. If the primary has 120 tu

rns, then the number of turns in the secondary is.
Physics
1 answer:
irakobra [83]3 years ago
3 0

Answer:

The number of turns on the secondary would be 60.

Explanation:

The voltage is to be cut in half. The ratio between the primary and secondary, for a step-down transformer, would then be 2:1.

120 turns / 2 = 60 turns

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A train A travelled a distance of 150 km in 3 hours, whereas, train 'B"
ozzi

Answer:

Therefore, Train A is faster with 50km/h and a 5km/h difference

Explanation:

train A

150km/3h = 50km/h

train B

180km/4h = 45km/h

8 0
3 years ago
What is 1.2 kg converted into mg.<br> I need to know for step by step please?
astra-53 [7]
Here’s a good photo to reference when converting in the metric system.

Each time you move down a step you move the decimal to the right, each time you move up a step you move the decimal to the left.

We are going from 1.2 kg or kilograms, which is at the very top left of the ladder. To get to mg or milligrams, we would have to make six jumps, so we’d move the decimal over six times.

1.2 > 12. > 120. > 1200. > 12000. > 120000. > 1200000.

So our final answer would be 1,200,000mg.
4 0
4 years ago
A toy helicopter takes off and moves 6 m up and then 1 m back down. What
klio [65]

the answer is 5 m up AKA "B"

6 0
4 years ago
The table shows the percentage of carbon dioxide in the Earth’s atmosphere in the years 1800 and 2013. Calculate the difference
Natalka [10]

The difference in the mass of carbon dioxide in 500 kg of air in 2013 compared to 1800 is 0.06 Kg

<h3>Data obtained from the question</h3>
  • Year 1800 percent = 0.028%
  • Year 2013 percent = 0.040%
  • Mass of air = 500 Kg
  • Difference =?

<h3>How to determine the mass of CO₂ in 500 Kg in year 1800</h3>
  • Year 1800 percent = 0.028%
  • Mass of air = 500 Kg
  • Mass of CO₂ =?

Mass = percent × mass of air

Mass of CO₂ = 0.028% × 500

Mass of CO₂ = 0.14 Kg

<h3>How to determine the mass of CO₂ in 500 Kg in year 2013</h3>
  • Year 1800 percent = 0.040%
  • Mass of air = 500 Kg
  • Mass of CO₂ =?

Mass = percent × mass of air

Mass of CO₂ = 0.040% × 500

Mass of CO₂ = 0.2 Kg

<h3>How to determine the difference</h3>
  • Mass of CO₂ in year 1800 = 0.14 Kg
  • Mass of CO₂ in year 2013 = 0.2 Kg
  • Difference =?

Difference = mass in 2013 - mass in 1800

Difference = 0.2 - 0.14

Difference = 0.06 Kg

Learn more about composition:

brainly.com/question/11617445

#SPJ1

7 0
2 years ago
What is any motion in which an object is moving along a curved path
Usimov [2.4K]
It's called "circular motion"


4 0
4 years ago
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