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DIA [1.3K]
3 years ago
10

If you ride your bike 20 miles and it takes you 120 minutes,what is your average speed

Physics
1 answer:
Alexus [3.1K]3 years ago
5 0
120 minutes=2 hours
20/2= 10mph
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BartSMP [9]

Answer:

the mass of the lipid content, to the nearest hundredth of a kg, in this solution =0.46 kg

Explanation:

Total heat content of the fat = heat content of water +heat content of the lipids

Let it be Q

the Q= (mcΔT)_lipids + (mcΔT)_water

total mass of fat  M= 0.63 Kg

Q= heat supplied = 100 W in 5 minutes

ΔT= 20°C

c_lipid= 1700J/(kgoC)

c_water= 4200J/(kgoC)

then,

100\times5\times60= m(1700)20+(0.63-m)(4200)20

solving the above equation we get

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the mass of the lipid content, to the nearest hundredth of a kg, in this solution =0.46 kg

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Answer:

C)evaporating of water

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4 0
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What happens to a liquid beyond its certain temperature
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As we saw in the question above, the mass of the rocket is three times greater than that of the rocket in the video. For this reason, we can conclude that the calculation should be done with the rocket in its initial state and another calculation with its final state:

Initial state: Speed ​​= rocket momentum / rocket mass.

Final state: Speed ​​= 2 rocket momentum / 3 rocket mass. -------------> 2/3

8 0
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