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trapecia [35]
3 years ago
11

Calculate the weight of a boy of mass 67kg on Earth if gravity = 10m/s/s.

Physics
1 answer:
iragen [17]3 years ago
3 0
So the equation for weight is mass*gravity. For this example I will use 9.81 and 10.
67*10=670N
67*9.81=657.27N
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A bag of ice cubes absorbs 149,000 J of heat, which causes its temperature to increase by 5.23 degrees celsius. what is the mass
Dima020 [189]

Answer:

14.3kg

Explanation:

Given parameters:

Quantity of heat = 149000J

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specific heat of the ice = 2000J/kg°C

Unknown:

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Solution:

The heat capacity of a substance is given as:

            H = m c Ф

H is the heat capacity

m is the mass

c is the specific heat

Ф is the temperature change;

  since m is the unknown, we make it the subject of the expression;

                    m = H/ mФ

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6 0
3 years ago
If an area receives a large amount of insulation is it likely to become warm or cold?
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Answer: heat

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Explanation:

5 0
3 years ago
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Sophie [7]

Answer:

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Explanation:

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8 0
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12345 [234]
R^2 = rx^2 + ry^2 !!!!!!!!!!
5 0
3 years ago
Read 2 more answers
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posledela
So impulse is a change in momentum.

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5 0
3 years ago
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