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DIA [1.3K]
3 years ago
8

You push on a box with a force of 300 N directly north. Another person pushes the box with a

Physics
1 answer:
tangare [24]3 years ago
7 0

Answer:

resultant \\  \: F =  \sqrt{ {300}^{2} +  {600}^{2}  }  \\  =  \sqrt{450000}  \\  = 670.82 \: newtons

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3 0
3 years ago
23. What mass of water will give up 240 calories<br> when its temperature drops from 80°C to 68°C?
svp [43]

Answer:

20g

Explanation:

Given parameters:

Quantity of heat  = 240calories

Initial temperature  = 80°C

Final temperature  = 68°C

Unknown:

Mass of water = ?

Solution;

To solve this problem, we use the expression:

         Q  = m c (t₂  - t₁)

Q is the quantity of heat

m is the mass

c is the specific heat = 1 cal/g°C

t₂ is the final temperature

t₁ is the initial temperature

  Insert the parameters and solve;

  Change in temperature is an absolute value

          240 = m x 1 x (68 - 80)

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3 0
3 years ago
Rocks that are formed as a result of deposits from weathering and erosion
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<h2>Answer: Sedimentary rocks </h2>

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3. According to the National Automobile Dealers Association, a single dealership may employ people with as many as 57 different
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