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MA_775_DIABLO [31]
3 years ago
7

The specific heat of Aluminum is 0.9 J/g K. The specific heat of Copper is 0.39 J/g K. If samples of equal mass of both Aluminum

and Copper are heated up to 100°C and then dropped in a cold water bath. Compare the heat lost by the two samples.
Physics
2 answers:
AleksandrR [38]3 years ago
6 0
<span> <span><span> <span> Answer:The Aluminum loses a little more than twice the heat of the Copper.Explanation:<span>
Since specific heat is part of the equation. A smaller specific heat will create a smaller heat gain or loss. </span>
<span>Hope this helped!!!!</span></span> </span> </span></span>
viva [34]3 years ago
4 0

Answer:

Heat loss by  aluminium will be more as compare to copper.

Explanation:

We know that heat lost given as follows

Q=mC_p\Delta T

Given that mass of aluminium and copper are same so lets take 1 g.

Lets take the temperature of cold water is 10°C

For aluminium

Q=mC_p\Delta T

Q=1\times 0.9\times 90

Q= 81 J

For copper

Q=mC_p\Delta T

Q=1\times 0.39\times 90

Q= 35.1 J

So from above we can say that heat loss by  aluminium will be more as compare to copper.

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3 years ago
Two advantages of solar energy over energy from Fossil fuels​
Law Incorporation [45]

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1)Fuel Sourcing

2)Power Generation

Explanation:

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3 0
3 years ago
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The velocity of a particle moving along the x-axis varies with time according to v(t) = A + Bt−1 , where A = 2 m/s, B = 0.25 m,
kondaur [170]

Answer:

a= -2\ m/s^2

a=-12.5\ m/s^2

x=2.17 m

x=8.4 m

Explanation:

Given that

v=A+Bt^{-1}

v=2+0.25t^{-1}

To find acceleration :

we know that

a=\dfrac{dv}{dt}

\dfrac{dv}{dt}=0-0.5t^{-2}

a=-0.5t^{-2}

Acceleration at t= 2 s

a=-0.5\times 2^{-2}

a= -2\ m/s^2

Acceleration at t= 5 s

a=-0.5\times 5^{-2}

a=-12.5\ m/s^2

We know that

v=\dfrac{dx}{dt}

dx=\left(2+\dfrac{1}{4t}\right)dt

Position at t= 2 s:

\int_{0}^{x}dx=\int_{1}^{2} \left(2+0.25\dfrac{1}{t}\right)dt

x=\left [2t+0.25\ lnt \right ]_{1}^{2}

x=2+0.25 ln2

x=2.17 m

Position at t= 5 s:

\int_{0}^{x}dx=\int_{1}^{5} \left(2+0.25\dfrac{1}{t}\right)dt

x=\left [2t+0.25\ lnt \right ]_{1}^{5}

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x=8.4 m

4 0
3 years ago
What is the formula of a compound formed between strontium (Sr) and chlorine (Cl)? (2 points)
Sidana [21]
The chemical formula of the compound of strontium and chlorine would be SrCl2. It is a salt of the strontium ion and chloride ion and a white crystalline compound. When burned, it produces a bright red hue. That is why it found some application in fireworks.  
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8 0
3 years ago
Light in air enter crown glass (n = 1.52) at an angle of 35 degrees. What is the refracted angle?
Dovator [93]

Answer:

22.17 degree

Explanation:

n = 1.52

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Let the angle of refraction is r.

use the Snell's law

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Sin r = 0.37735

r = 22.17 degree

Thus, the ray is refracted at an angle of 22.17 degree.

8 0
3 years ago
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