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Rainbow [258]
3 years ago
14

Uses and effects of UV rays? ​

Physics
1 answer:
anygoal [31]3 years ago
6 0

Answer:

The above pic may help you :)

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What causes scientific knowledge to change over time?
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A: Living systems are constantly changing,so previous explanations may no longer apply

Explanation:

Hopefully this helps!

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The distance of the force from the axis of rotation is called?
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A note of frequency 2000Hz has a velocity of 400 ms! What is the wavelength of the note?​
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Explanation:

frequency=c/λ

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putting values

2000=400/λ

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Which statement describes the relationship between bond strength and the melting and boiling points of a substance? A. As the fo
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when two object P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of
Ahat [919]

<h2>When two object P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity of P to Q​</h2>

Explanation:

Specific heat capacity

It is defined as amount of heat required to raise the temperature of a substance by one degree celsius .

It is given as :

Heat absorbed = mass of substance x specific heat capacity x rise in temperature

or ,

Q= m x c x t

In above question , it is given :

For Q

mass of Q = m

Temperature changed =T₂/2

Heat supplied = x

Q= mc t

or

X=m x C₁ X T₁

or, X =m x C₁ x T₂/2

or, C₁=X x 2 /m x T₂                                 (equation 1 )

For another quantity : P

mass of P =m/2

Temperature= T₂

Heat supplied is same that is : X

so, X= m/2 x C₂ x T₂                            

or, C₂=2X/m. T₂                                   (equation 2 )

Now taking ratio of C₂ to c₁, We have

C₂/C₁= 2X /m.T₂  /2X  /m.T₂

so, C₂/C₁= 1/1

so, the ratio is 1: 1

8 0
3 years ago
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