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gavmur [86]
3 years ago
13

In general, sound travels faster through

Physics
1 answer:
BartSMP [9]3 years ago
5 0

Answer:

solids

Explanation:

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What is potential difference​
lisabon 2012 [21]

Answer:

VOLTAGE

Explanation:

Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. ... A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit

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Chacken Wangs

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Water has a specific heat capacity nearly nine times that of iron. Suppose a 50-g pellet of iron at a temperature of 200∘C is dr
miv72 [106K]

Answer:

a. closer to 20∘C

Explanation:

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

T_{wi} = Initial temperature of water = 20 C

T_{e} = Final equilibrium temperature

Also given that

c_{w} = 9 c_{p}

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

hence the correct choice is

a. closer to 20∘C

4 0
4 years ago
1. According to Dalton's Atomic theory which statement is correct from the following statement?
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Answer:

the mass is distributed uniformly in an atom

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If you are inside a car and the car is struck by lightning, it is best to stay inside because the electric field inside the car
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Get out if the car

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Get out of the car because the car could explode by over eclectic power

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