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son4ous [18]
3 years ago
14

Which are two types of mechanical energy electrical and kinetic nuclear and chemical radiant and thermal elastic and gravitation

al
Physics
2 answers:
WINSTONCH [101]3 years ago
5 0
Elastic and gravitational.
Arturiano [62]3 years ago
5 0

Answer:

elastic and gravitational

Explanation:

Mechanical energy is the sum of the kinetic energy and potential energy of an object:

E=K+U

where

K=\frac{1}{2}mv^2

is the kinetic energy of the object (with m being the object's mass and v is the object's speed),

while U is the potential energy. Potential energy refers to the position of the object, and it can be of two types:

- Gravitational potential energy: U=mgh, where g is the gravitational acceleration and h is the height of the object above the ground

- Elastic potential energy: U=\frac{1}{2}kx^2, where k is the spring constant and x is the compression/stretching of the spring.

Therefore, the correct choice is:

elastic and gravitational


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tatuchka [14]

Answer:

Q' = 115.2 KJ

Explanation:

Given that

Current I = 10 A

Voltage = 120 V

Time t= 120 s

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The change in the energy ΔEngg = 28.8 kJ

By using energy conservation

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Now by putting the values in the above equation

144 = Q' + 28.8 KJ

Q' = 115.2 KJ

Therefore the waste energy will be 115 kJ.

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