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Vadim26 [7]
3 years ago
10

A sled is pushed with 30 Newtons and sliding friction is 10 Newtons find the net force on the sled​

Physics
1 answer:
mixas84 [53]3 years ago
5 0

The net force is basically the speed or we could call it the centre of gravity. So it's simple:

to find the centre you minus the 2 numbers -

30 - 10 = 20

so the net force is 20

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The part of an atom that is mostly empty space is the
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<h3><u>Answer;</u></h3>

Electron cloud

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A sample of an unknown substance has a mass of 0. 158 kg. If 2,510. 0 J of heat is required to heat the substance from 32. 0°C
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HOW TO CALCULATE SPECIFIC HEAT CAPACITY:

The specific heat capacity of a substance can be calculated using the following formula:

Q = m × c × ∆T

Where;

  • Q = quantity of heat absorbed (J)
  • c = specific heat capacity (4.18 J/g°C)
  • m = mass of substance
  • ∆T = change in temperature (°C)

According to this question, 2,510.0 J of heat is required to heat the 0.158kg substance from 32.0°C to 61.0°C. The specific heat capacity can be calculated:

2510 = 158 × c × (61°C - 32°C)

2510 = 4582c

c = 2510 ÷ 4582

c = 0.5478 J/g°C

Therefore, the specific heat capacity of the unknown substance that has a mass of 0.158 kg is 0.5478 J/g°C.

Learn more about specific heat capacity at: brainly.com/question/2530523

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