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kaheart [24]
3 years ago
7

Substance A has twice the specific heat capacity as substance B. If 1000 J of heat are added to 1.0 kg of each substance, compar

e the change in temperature of each substance.
Physics
1 answer:
Mrrafil [7]3 years ago
4 0
Substance A would have a delta T (change in temp) rise 1/2 the rise in substance B.

Q=mc x delta T

Q= heat energy in Joules
m= mass of substance heated or cooled
c= specific heat
ΔT is change in temp.

Solve for change in temp=. Q/mc

Specific heat and mass are not inversely proportional to heat energy input.

Putting into real world scenario of using water to heat a building.

Specific heat of water is 1.
It takes 1 btu to raise one pound of water 1 degF. at a base of 60 degF

Acetone specific heat is .51

So it takes half the amount of heat input to get a 100 degree ΔT, as compared to water.
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Explanation:

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While plane is moving under tailwind condition it took time "t"

so here we will have

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here net speed of the plane will be given as

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similarly when it moves under the condition of headwind its net speed is given as

v_{net} = v - v_w

now time taken to cover the distance is 2 hours more

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now solving two equations

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3 years ago
The only force acting on a 2.5 kg canister that is moving in an xy plane has a magnitude of 3.0 N. The canister initially has a
Effectus [21]

Answer:44.58 J

Explanation:

mass of block \left ( m\right )=2.5 kg

Force magnitude=3 N

Initial velocity =2.3\hat{i} m/s

Final velocity=6.4\hat{j} m/s

Initial Kinetic Energy=\frac{1}{2}mv^2

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Final Kinetic Energy=\frac{1}{2}mv^2

=\frac{1}{2}\times 2.5\times 6.4^2=51.2 J

Work Done =Final -Initial Kinetic energy=51.2-6.612=44.58 J

4 0
3 years ago
Find the distance between the points (2, 8) and (-1, 9).
Shtirlitz [24]
The approximate value for the distance between the two points is <span>3.162277663.16227766</span>.

<span><span>√10</span>≈<span>3.16227766

</span></span>
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Calculate the pressure of water at the bottom of 6m depth well.( g= 9.8m/s square<br>​
Alexeev081 [22]

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58.8NM-²

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here the density of water is 1gm-³ it a constant so it not given

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pressure = 58.8NM-²

8 0
3 years ago
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