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Katyanochek1 [597]
2 years ago
15

Hakeem has two objects that are different temperatures. The beginning temperature of object A is 10°C. The beginning temperature

of object B is 29°C. He places the two objects so that they are in contact with each other. Which diagram accurately shows the direction of heat flow in this scenario?
Physics
2 answers:
devlian [24]2 years ago
6 0
None of the diagrams you attached shows the scenario accurately,
or at all.

Heat flows from Object-B to Object-A, until both objects are at
the same temperature, somewhere between 10°C  and  29°C.
Tamiku [17]2 years ago
3 0

the one that b is in this direction <<<<<<<<

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Leya [2.2K]

Answer:

0.50m/s

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7 0
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An activity that is relatively short in time (&lt; 10 seconds) and has few repetitions predominately uses the _____________ ener
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5 0
2 years ago
Suppose you want to make a scale model of a hydrogen atom. You choose, for the nucleus, a small ball bearing with a radius of 1.
RoseWind [281]

Answer:

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Explanation:

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Let's use proportions rule

                x_ electron = 0.529 10⁻¹⁰ /1.2 10⁻¹⁵ 1.5

               x _electron = 0.66 10⁵ mm = 0.66 10² m

B) the radii of the Earth and the sun are

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                tex]R_{Sum}[/tex] = 6.96 10⁸ m

                Distance = 1.5 10¹¹ m

                x_Earth = 1.5 10¹¹ / 6.96 10⁸  1.5

                x _Eart = 1.13 10² m

C) The radius of a sphere that represents the earth, if the sphere that represents the sun is 1.5 mm, let's use another rule of proportions

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5 0
2 years ago
A balloon is at a height of 81m and is ascending upwards with a velocity of 12m/s. A body of 2kg weight is dropped from it. If g
kap26 [50]
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7 0
2 years ago
The dial of a scale looks like this: 00.0kg. A physicist placed a spring on it. The dial read 00.6kg. He then placed a metal cha
saveliy_v [14]

Answer:

d. The scale's resolution is too low to read the change in mass

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since,

w = Fd

dw = Fdx

integrating and using value of F, we get:

ΔE = (0.5)kx²

where,

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x = displacement

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Now, if we convert this energy to mass from Einstein's equation, we get:

ΔE = Δmc²

Δm = ΔE/c²

Δm = (1.47 x 10⁴ J)/(3 x 10⁸ m/s)²

<u>Δm =  4.9 x 10⁻¹³ kg</u>

As, you can see from the answer that even for the most extreme cases the value of mass associated with the additional energy is of very low magnitude.

Since, the scale only gives the mass value upto 1 decimal place.

Thus, it can not determine such a small change. So, the correct option is:

<u>d. The scale's resolution is too low to read the change in mass</u>

8 0
2 years ago
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