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mario62 [17]
2 years ago
6

A weight trainer lifts a 90.0-kg barbell from a stand 0.90 m high and raises it to a height of 1.75 m. What is the increase in t

he potential energy of the barbell-Earth system?
Physics
1 answer:
nirvana33 [79]2 years ago
7 0

Answer:

∆PE = 749.7 J

At 0.9 m high, PE = 793.8 J

At 1.75 m high, PE = 1543.5 J

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Which colors of light represents the lowest visible frequency?
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Answer:

Red

Explanation:

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The frequency and Energy has an inverse relationship with the wavelength.

However Red has the longest wavelength of about 620 - 780 nanometer.

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Describe the relationship between a moving objects mass and its kinetic energy
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A vertical spring with spring stiffness constant 305 N/m oscillates with an amplitude of 28.0 cm when 0.235 kg hangs from it. Th
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Answer:

The function that describe the motion in the time

y (t) = 0.28m * sin ( 36.025 * t)

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To determine the function of the motion knowing as a motion oscillation in a amplitude a frequency

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