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Katyanochek1 [597]
3 years ago
8

A supersonic jet, with a mass of 21,000 kg, departs from its home airbase with a velocity of 400 m/s due east. What is the jet’s

momentum?
Answer is - 21,000 x 400m/s = 84,00000 m/s
Physics
1 answer:
disa [49]3 years ago
6 0

Answer:

Momentum  P is 840000kgm/s or 8.4 × 10^6

Explanation:

Data :

        Mass = 21000 kg

        Velocity = 400 m/s

So momentum is given as

      P = mv

      P = 21000×400

    P = 8400000 kgm/s

       P = 8.4 × 10^6

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Answer:0 J

Explanation:

Given

For first step

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For second step

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Work done on the system is considered as Positive and vice-versa.

and from first law of thermodynamics

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for first step

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4 0
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4 years ago
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A 39.3 g glass thermometer reads 22.0oC before it
ratelena [41]

Answer:

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Explanation:

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Let the specific heat of water be 4.186 j/g °C

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136 mL of water = 0.136L of water = 0.136 kg of water = 136 g of water

Since the change of temperature on the glass thermometer is 43.6 - 22 = 21.6 C. We can then calculate the heat energy absorbed to it:

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6 0
3 years ago
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Dafna1 [17]

Answer:

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Explanation:

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