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Ilya [14]
2 years ago
9

How do i calculate the kinetic energy

Physics
1 answer:
Stella [2.4K]2 years ago
4 0

The kinetic energy is found at 150 J. The work-energy theorem is applied in the given equation.

<h3>What is Kinetic energy?</h3>

The energy possessed by the body by the virtue of motion is known as Kinetic energy. It is found as the product of mass and the square of the velocity.

The given data in the problem is;

The mass is, m=0.15 kg

Force, F=300 N

Distance,d=0.50 m

From the work-energy theorem, kinetic energy is equal to the work done.

Work done = Kinetic energy

\rm F  \times d  = KE \\\\ KE= 300 \times 0.50 \\\\ KE=150 \ J

Hence, kinetic energy is found at 150 J.

To learn more about the kinetic energy, refer to the link;

brainly.com/question/12669551

#SPJ1

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4 years ago
Una placa de cobre a 20°C tiene unas dimensiones de 65cm x 78 cm. Encuentra el área de la placa a 400°C; Coeficiente de dilataci
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Answer:

El área de la placa es aproximadamente 5102.752 centímetros cuadrados.

Explanation:

Asumamos que el cambio dimensional como consecuencia de la temperatura es pequeña, entonces podemos estimar el área de la placa de cobre en función de la temperatura mediante la siguiente aproximación:

A_{f} = w\cdot l \cdot [1 + 2\cdot \alpha\cdot (T_{f}-T_{o})] (1)

Donde:

w - Ancho de la placa, en centímetros.

l - Longitud de la placa, en centímetros.

\alpha - Coeficiente de dilatación, en \frac{1}{^{\circ}C}.

T_{o} - Temperatura inicial, en grados Celsius.

T_{f} - Temperatura final, en grados Celsius.

Si sabemos que w = 65\,cm, l = 78\,cm, \alpha = 17\times 10^{-6}\,\frac{1}{^{\circ}C}, T_{o} = 20\,^{\circ}C and T_{f} = 400\,^{\circ}C, entonces el área de la placa a la temperatura final:

A_{f} = (65\,cm)\cdot (78\,cm)\cdot \left[1+\left(17\times 10^{-6}\,\frac{1}{^{\circ}C} \right)\cdot (400\,^{\circ}C-20\,^{\circ}C)\right]

A_{f} = 5102.752\,cm^{2}

El área de la placa es aproximadamente 5102.752 centímetros cuadrados.

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3 years ago
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