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3 years ago

How energy is converted from one form to other

Physics

2 answers:

blagie [28]3 years ago

8 0

Explanation:

Energy can be converted from one form to another. Examples: Gasoline (chemical) is put into our cars, and with the help of electrical energy from a battery, provides mechanical (kinetic) energy. ... Similarly, purchased electricity goes into an electric bulb and is converted to visible light and heat energy.

Arisa [49]3 years ago

3 0

Answer:

Explanation:

Energy transformation is when energy changes from one form to another. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation. For example, Electricity goes into an electric bulb and is converted to visible light and heat energy.

Hope this helped!!!

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Two Force one of 12 Newton and another 24 Newton acts at 90 degree with each other find the resultant of two force and its direc

Leona [35]

Answer:

Fr = 26.83 [N]

Explanation:

To solve this problem we must use the Pythagorean theorem, since the forces are vector quantities, that is, they have magnitude and density. Therefore the Pythagorean theorem is suitable for the solution of this problem.

$F_{r}=\sqrt{(12)^{2}+(24)^{2} } \\F_{r}=26.83[N]$

3 0

3 years ago

Una motocicleta viaja con una velocidad constante de 72m/s calcula su velocidad en km/h

Juliette [100K]

Answer:

Entonces la velocidad de la motocicleta es $259.18 \frac{km}{h}$

Explanation:

La regla de tres simple es una operación que ayuda a resolver rápidamente problemas de proporcionalidad, teniendo tres valores conocidos y una incógnita.

Dos magnitudes son directamente proporcionales cuando al multiplicar o dividir una de ellas por un número, la otra queda multiplicada o dividida respectivamente por el mismo número. En otras palabras, dos magnitudes son directamente proporcionales si cuando aumenta una magnitud, también lo hace la otra en la misma proporción o cuando disminuye una magnitud, también lo hace la otra en la misma proporción.

Para resolver una regla directa de tres cuando las magnitudes son directamente proporcionales, se debe seguir la siguiente fórmula:

a ⇒ b

c ⇒ x

Entonces $x=\frac{c*b}{a}$

La regla directa de tres simple es la regla que se aplica en este caso donde hay un cambio de unidades. Para realizar esta conversión de unidades, primero debe saber que 1 m = 0.001 km. Entonces, si 0.001 km es 1 m, ¿cuántos kilómetros son 72 m?

$km=\frac{72 m*0.001 km}{1 m}$

km=0.072

Entonces:

$72\frac{m}{s} =\frac{72 m}{s} =\frac{0.072 km}{s}$

Siendo 1 s=0.0002778 h:

$72\frac{m}{s} =\frac{72 m}{s} =\frac{0.072 km}{s}=\frac{0.072 km}{0.0002778 h}=259.18 \frac{km}{h}$

Entonces la velocidad de la motocicleta es $259.18 \frac{km}{h}$

8 0

3 years ago

Which of the following best describes the association

exis [7]

Strong positive,

as high temperature increases, precipitation increases, so it’s positive.

And since the points are very close together, there is a strong correlation between the two variables, so it is strong.

Don’t forget to mark brainliest please

3 0

2 years ago

A playground merry-go-round has a mass of 120 kg and a radius of 1.80 m and it is rotating with an angular velocity of 0.400 rev

saw5 [17]

Answer:

The final angular velocity is rev/s is 0.293 rev/s.

Explanation:

Given;

mass of the merry-go-round, m₁ = 120 kg

radius of the merry-go-round, r = 1.8 m

initial angular velocity, ω = 0.4 rev/s

mass of the child, m₂ = 22 kg

Apply the principle of conservation angular momentum to determine the final angular velocity;

$I_i= I_f\\\\\frac{1}{2} m_1r^2 \omega _i = \frac{1}{2} m_1r^2 \omega _f + m_2r^2 \omega _f\\\\ \frac{1}{2} m_1r^2 \omega _i =( \frac{1}{2} m_1r^2 + m_2r^2 )\omega _f\\\\\omega _f = \frac{ \frac{1}{2} m_1r^2 \omega _i}{\frac{1}{2} m_1r^2 + m_2r^2} \\\\\omega _f = \frac{ \frac{1}{2} m_1 \omega _i}{\frac{1}{2} m_1 + m_2}\\\\\omega _f = \frac{0.5 \ \times \ 120\ kg \ \times \ 0.4\ rev/s}{0.5 \ \times 120\ kg \ \ + \ \ 22 \ kg} \\\\\omega _f = 0.293 \ rev/s\\$

Therefore, the final angular velocity is rev/s is 0.293 rev/s.

3 0

3 years ago

What steps are involved in converting potential energy to kinetic energy? Give me an example for each. Your Answer must be 2 com

Degger [83]

Answer:

Explanation:When an object is allowed to fall, the concentrated gravitational potential energy is converted into the kinetic energy of motion. If there is no air resistance, or other restrictions, all of the potential energy will be converted to kinetic energy when the object has fallen the distance H.

6 0

3 years ago