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Tema [17]
4 years ago
12

Help awnsers need expertsss​

Physics
1 answer:
aleksley [76]4 years ago
8 0

Answer:

  1. ok the answer for number 14 is 0.5 0 kilograms to get this answer this is my explanation ok where try that the bottle of water when full has a mass of 1.30 kg and one half of the water is poured away the mass of the bottle and the half of water is 0.90 kilograms so to get the the water that was poured out we will subtract 0.90 kg from 1.30 kilograms to get 0.40 kilograms so this 0.40 kilograms is the half of the water that was poured out meaning the other half is also 0.40 so to get the mass of the bottle we will take mass of the bottle plus the water - mass of the water so it will be 1.30 kilograms - 0.80 kilograms to get 0.50 kilograms.
  2. and number 15 I don't know I'm sorry about that
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12 m and 16 m :)      The answer is simple, I got it wrong on a test and this was the answer .... sorry can someone help us out?? 




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3 years ago
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Which characteristic is related to kinetic energy but not potential energy.
Reil [10]

Answer:

Option (D)

Explanation:

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Once a well has reached the water table, it will not run dry true or false? -earth science
prohojiy [21]
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4 years ago
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in an automobile crash, a vehicle was stopped at a red light is rear-ended by another vehicle. The vehicles have the same mass.
Masja [62]

8 m/s

Explanation:

Using conservation of momentum :-

m1u1 + m2v1 = m1u2 + m2v2

Where:

m1 = Mass of first vehicle

m2 = Mass of second vehicle

u1 = initial speed of first vehicle

v1 = initial speed of second vehicle

u2 = Final speed of first vehicle

v1 = Final speed of second vehicle

From the received informations:

m1 = m2

v1 = 0

v2 = u2 = 4 \frac{m}{s}

So

m1u1 + 0 = 4m1 + 4m1

Now divide both sides by m1 :-

u1 = 4 + 4

u1 = 8m/s

Therefore, final answer is 8 m/s

4 0
3 years ago
a car travels at 50 m/s for first 20 seconds , 30 m/s for next 30 seconds and finally 20 m/s for next 10 seconds . find its aver
kaheart [24]

The average speed traveled by car is 35m/s.

1^{st} case

  • Speed=50m/s\\
  • Time =20s

       Distance = speed*time= 50*20=1000m

2^{nd} case

  • Speed=30m/s
  • Time=30s

       Distance=30*30=900m

3^{rd} case

  • Speed=20m/s
  • Time=10s

       Distance=20*10=200m

Now, The total distance=(1000+900+200)m=2100m

        Total time=(20+30+10)s=60s

       Average distance =\frac{total distance}{total time} = \frac{2100}{60}=35m/s

To learn more about Average speed, refer to:

  • brainly.com/question/21097620

3 0
2 years ago
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