How high must a sack of sugar weighing 10 kg be lifted to have 58 J of potential energy? (Hint: Derive the formula of PE-mgh to get the formula for height. Divide both sides by the variable/s adjacent to height (h) to get h=PE/mg)

G : 58J (PE) and 10 kg (mass)

E : h = PE/mg

S : 58J/(10kg)(9.8/2)

A : 58/59 = [ 0.59 m ]

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If a bicycle with a velocity of 17.89 has kinetic energy of 5000 J. What is the mass of the bicycie? (Hint: Derive the formula of KE my to get the formula for mass. Divide both sides by the variable/s adjacent to the mass (h) to get m=KEEP/(0.5)(v²)

G : v = 17.89 m/s

KE = 5000J

E : m = KE/0.5v²

S : m = KE/0.5v²

= 5000J/(0.5)(17.89 m/s²)

= 5000J/160.02605 m²/s²

= 31.2449 kg

A : m = [ 31 kg ]

Hope it's Help

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4 0

3 years ago

How is setting revealed?

Blizzard [7]

For example “Elizabeth and Jonny were in the woods” normally when a setting is revealed it starts off by “in the” and the next few words are probably the setting. Setting usually comes in at the begging to let the reader know where the story takes place, hope this helps:)

4 0

3 years ago