3 years ago

Segment D - E : The bus is speed_____ It is gradually increasing it's

Physics

1 answer:

Lostsunrise [7]3 years ago

4 0

B.) Speeding up......

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4 years ago

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a. closer to 20∘C

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$m_{p}$ = mass of pallet = 50 g = 0.050 kg

$c_{p}$ = specific heat of pallet = specific heat of iron

$T_{pi}$ = Initial temperature of pellet = 200 C

$m_{w}$ = mass of water = 50 g = 0.050 kg

$c_{w}$ = specific heat of water

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$T_{e}$ = Final equilibrium temperature

Also given that

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Using conservation of energy

Energy gained by water = Energy lost by pellet

$m_{w} c_{w} (T_{e} - T_{wi}) = m_{p} c_{p} (T_{pi} - T_{e})\\(0.050) (9) c_{p} (T_{e} - 20) = (0.050) c_{p} (200 - T_{e})\\ (9) (T_{e} - 20) = (200 - T_{e})\\T_{e} = 38 C$

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4 years ago