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Tomtit [17]
3 years ago
9

Which of the following is true about conduction? Question 2 options: It is heat transfer through direct contact It can only occu

r in a liquid It is heat transfer in currents through a liquid It is heat transfer as a form of light
Physics
1 answer:
kramer3 years ago
3 0

Answer:

through direct contact

Explanation:

took the test!

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a 1010 W radiant heater is constructed to operate at 115 V. (a) What is the current in the heater when the unit is operating?
scZoUnD [109]

Answer:

<h2>8.78 Amps</h2>

Explanation:

Given data:

power rating of the heater P= 1010 W

voltage of the heater V= 115 volts

current taken by the heater I= ?

We can apply the power formula to solve for the current in the heater

i.e P= IV

Making I the current subject of formula we have

I= P/V

Substituting our given data into the expression for I we have

I=1010/115= 8.78 A

<h2 /><h2><em>Hence the current when the unit/heater is operating is 8.78 Amp</em></h2>
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3 years ago
Why sheets of newspaper can be used to keep ice cream cold and keep fish and chips hot?
stich3 [128]

Answer: Paper

Explanation: It is a insulator

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snow_lady [41]

Answer:

1. evaporation

2. sublimation

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4. freezing

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7 0
3 years ago
Which option describes the direction of thermal energy transfer in Earth's
Montano1993 [528]

.........

Explanation:

Option B..... ...

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3 years ago
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The ball in front of you is going to drop one meter. how long will it take to fall?
Pavlova-9 [17]

The ball will take 0.45 seconds to reach the ground

<h3>How will we solve this question?</h3>

We will use Newton’s laws of motion, so

H= (1/2)gt^2 taking height= 1m

1= (1/2) x 9.8 x t^2

t=\sqrt{10/49} = 0.45 seconds

<h3>What are the three laws of motion given by Newton?</h3>

The 3 laws of motion given by Newton are as follows:

1) Unless an unbalanced force acts upon it, an item at rest remains at rest, and an object in motion continues to move in a straight line at a constant pace.

2) An object's acceleration is influenced by its mass and the force being applied.

3) Whenever one thing applies force to another, the second object applies the opposing, equal force to the first.

To know more about Newton's laws of motion visit:

brainly.com/question/27915475

#SPJ4

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2 years ago
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