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lisabon 2012 [21]
3 years ago
11

What were the physical activities in your childhood that you still do today? Do you spend more time now in doing these activitie

s as compared before? ​
Physics
1 answer:
user100 [1]3 years ago
5 0
I used to play tag or run around a lot and sometimes i do these activities but its a lot less now that i am older
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Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C.
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<span>The specific heat (or the amount of heat required to raise the temperature of a unit mass of a substance by 1 degree Celsius) of copper is about 0.386 J/g/degree Celsius. This means that if we supply 0.386 J of energy to 1 gram of copper, its temperature will increase by 1 degree Celsius.</span>
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3 years ago
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It's five miles from Tim's house to Rita's house. Roughly how long is this distance in feet?
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Answer:

26400 ft

Explanation:

that would be my answer

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3 years ago
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A horizontal rectangular surface has dimensions 2.80 cm by 3.20 cm and is in a uniform magnetic field that is directed at an ang
koban [17]

Answer:

magnitude of the magnetic field 0.692 T

Explanation:

given data

rectangular dimensions = 2.80 cm by 3.20 cm

angle of 30.0°

produce a flux Ф = 3.10 × 10^{-4}  Wb

solution

we take here rectangular side a and b as a = 2.80 cm and b = 3.20 cm

and here angle between magnitude field and area will be ∅ = 90 - 30

∅ = 60°

and flux  is express as

flux Ф = \int \vec{B}.d\vec{A}   .................1

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so B = \frac{\phi }{Acos\theta }    

and we know

A = ab

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B = \frac{\phi }{abcos\theta }    ..............3

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B =  \frac{3.10\times 10^{-4} }{2.80 \times 10^{-2}\times 3.20 \times 10^{-2}\times cos60}  

solve we get

B = 0.692 T

8 0
3 years ago
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