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Ember
Physics
28 June, 21:42
What is the energy equivalent of 5.0kg of mass?
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Pitts
28 June, 22:10
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Ah hah! Sounds to me like an " E = m c² " question.
c = 3 x 10⁶ m/s
c² = 9 x 10¹² m²/s²
E = (5 kg) x (9 x 10¹² m²/s²)
= 45 x 10¹² kg-m²/s²
= 4.5 x 10¹³ newton-m
= 4.5 x 10¹³ Joules.
That's the energy needed to
- - run a 1000-watt blow-dryer for roughly 1,427 years.
or
- - run a 400-horsepower truck, wide open, pedal to the metal,
for 4.78 years.
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