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2 years ago

A television that is 83% efficient provides 4 600) of useful energy. How much energy

Physics

1 answer:

choli [55]2 years ago

4 0

Answer:

Total energy consume will be equal to 5542.175 j

Explanation:

We have given efficiency of the television is 83% = 0.83

Now it is given that useful energy is 4600 joule

We have to find the total energy consume

We know that efficiency is equal to ratio of useful energy to total energy consume

So $0.83=\frac{4600}{total \ energy \ consume }$

total energy consume = 5542.175

So total energy consume will be equal to 5542.175 J

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3 years ago

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3 years ago

What is the potential energy of a 2500 g object suspended 5 m above the earth's surface?

alexandr402 [8]

Answer:

Explanation:

Potential energy, which is the energy a body assumes at a position, can be calculated using the formula:

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2 years ago

The force between a pair of charges is 900 newtons. The distance between the charges is 0.01 meters. If one of the charges is 2e

Maksim231197 [3]

Answer:

$\fbox{strength \: of \: the \: other \: charge = - 0.0196 Ke \: Coulomb}$

Explanation:

Given:

Force between pair of charges= 900 newtons

The distance between the charges = 0.01 meters

Strength of Charge first q1 = 2e-10 Coulomb

To find:

Strength of Charge second q2 = ____ Coulomb?

Solution:

We know that,

Force between two charges separate by distance r is given by the equation,

$|F| = K_e \frac{q1 \cdot \: q2}{ {r}^{2} } \\ 900 =K_e \frac{(2e - 10)\cdot \: q2}{ {0.01}^{2} } \\ 900 \times {10}^{ - 4} = K_e {(2e - 10)\cdot \: q2} \\ q2 = \frac{9 \times {10}^{ - 2} }{(2e - 10) K_e} \\ \\ \fbox{We \: know \: that \: e = 2.71 } \\ substituting \: the \: value \: \\ q2 = \frac{9 \times {10}^{ - 2} }{(2 \times 2.71 - 10)K_e} \\ q2 = \frac{0.09}{ - 4.58 K_e} \\ q2 = \frac{-0.0196}{K_e}\: coulomb$

$\fbox{strength \: of \: the \: other \: charge = - 0.0196 Ke \: Coulomb}$

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2 years ago