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Nikolay [14]
3 years ago
12

Carbohydrates are made of hydrogen, oxygen, and which of the following? A. nitrogen B. carbon C. helium D.argon

Physics
1 answer:
k0ka [10]3 years ago
4 0
The answer would be carbon
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What is the kinetic energy of a 120-cm thin uniform rod with a mass of 450 g that is rotating about its center at 3.60 rad/s?
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Answer:

1.05 J.

Explanation:

Kinetic Energy: This is the energy possessed by a body due to its motion. The S.I unit of kinetic energy is Joules (J). The formula of kinetic energy is given as

Ek = 1/2mv²................. Equation 1

Where Ek = kinetic energy, m = mass of the uniform rod, v = liner velocity of the rod.

But,

v = αr .......................... Equation 2

Where α = angular velocity of the rod, r = radius of the circle.

Given: α = 3.6 red/s, r = 120/2 = 60 cm = 0.6 m.

Substitute into equation 2

v = 3.6(0.6)

v = 2.16 m/s.

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Substitute into equation 1

Ek = 1/2(0.45)(2.16²)

Ek = 1.05 J.

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To answer the following questions for this specific problem:

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Please find the complete solution in the attached file.

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