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ZanzabumX [31]
3 years ago
10

Wich of the following is NOT an example of accelerated motion?

Physics
2 answers:
crimeas [40]3 years ago
7 0
The example that does Not show accelerated motion would be A. An elevator going up at constant speed, as in this example, the speed that the elevator is going up is not increasing or decreasing but is constant. A car taking a curve, although it may be at a constant speed, there is a change in direction associated with it, and thus the car is accelerating.
Allushta [10]3 years ago
5 0
B is the answer for your question the answer is b an elevator slowing down  
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Just about everyone at one time or another has been burned by hot water or steam. This problem compares the heat input to your s
tatyana61 [14]

Answer:

Q_T=63313.5\ J

Explanation:

Given:

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  • initial temperature of steam vapour, T_v=100^{\circ}C
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  • mass of steam, m=25\ g
  • specific heat of water, c=4190\ J.kg^{-1}.K^{-1}=4.19\ J.g^{-1}.K^{-1}
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<em>Assuming that no heat is lost in the surrounding.</em>

<u>We know:</u>

Q=m.c.\Delta T

<u>Now the total heat given by the steam to form water at the given conditions:</u>

Q_T=Q_{Lv}+Q_w ..............................(1)

where:

Q_{Lv}= latent heat given out by vapour to form water of 100°C

Q_w= heat given by water of 100°C to come at 34°C.

putting respective values in eq. (1)

Q_T=m(L+c.\Delta T)

Q_T=25(2256+4.19\times 66)

Q_T=63313.5\ J

is the heat transferred to the skin.

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Answer:here you goo

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