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stellarik [79]
3 years ago
15

A ball has a weight of 49N. What is the mass of the ball

Physics
1 answer:
AveGali [126]3 years ago
4 0
A force<span> is a push or pull upon an object resulting from the object's interaction with another object. It can be calculated by the product of mass and acceleration of the object in this case acceleration would be the gravitational acceleration. We can calculate mass as follows:

49 N = m (9.81 m/s^2)
m = 4.99 kg</span>
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Answer:

Δu=1300kJ/kg  

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Energy at the initial state

p_{1}=200kPa\\t_{1}=300^{o}\\u_{1}=2808.8kJ/kg(tableA-5)

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p_{2}=200kPa\\x_{2}=1(stat.vapor)\\v_{2}=0.8858m^3/kg(tableA-5)

Process 2-3 is a constant volume process

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The overall in internal energy

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=2808.8kJ/kg-1508.6kJ/kg\\=1300kJ/kg

Δu=1300kJ/kg  

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An object weighs 32 newtons. What is its mass if a gravitometer indicates that g = 8.25 m/s?
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