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ahrayia [7]
3 years ago
13

Complete the sentence

Physics
1 answer:
scoray [572]3 years ago
6 0

The object is at rest.


This is due to the fact hwen two forces act upon each other on opposite sides, the movement of the object does not change due to the net force equaling 0.

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What is the acceleration of softball if it has a mass of 0.5 kg and hits the catcher's
lisabon 2012 [21]

Answer:

Your answer is 50m/s^2

Explanation:

A = F/M

25N/0.5kg = 50

7 0
2 years ago
Un bloque de 20kg de masa se desplaza horizontalmente en la dirección de eje X por acción de una fuerza horizontal variable F =
zmey [24]

Answer:

a) El trabajo realizado por esta fuerza mientras el bloque se mueve desde la posición x = + 10 m hasta la posición x = + 20 m es 900 joules.

b) La rapidez del bloque en la posición x = + 20 metros es aproximadamente 5.701 metros por segundo.

Explanation:

a) El trabajo expermentado por el bloque (W), medido en joules, es definida por la siguiente ecuación integral:

W = \int\limits^{x_{max}}_ {x_{min}} F(x) \, dx (1)

Donde:

x_{min}, x_{max} - Posiciones mínima y máxima del bloque, medidos en metros.

F(x) - Fuerza horizontal aplicada al bloque, medida en newtons.

Si conocemos que F(x) = 6\cdot x, x_{min} = 10\,m y x_{max} = 20\,m, entonces el trabajo realizado por esta fuerza es:

W = \int\limits^{20\,m}_{10\,m} {6\cdot x} \, dx (2)

W = 6\int\limits^{20\,m}_{10\,m} x\, dx

W = 3\cdot x^{2}\left|\limits_{10\,m}^{20\,m}

W = 3\cdot [(20\,m)^{2}-(10\,m)^{2}]

W = 900\,J

El trabajo realizado por esta fuerza mientras el bloque se mueve desde la posición x = + 10 m hasta la posición x = + 20 m es 900 joules.

b) La rapidez final del bloque se determina mediante de Teorema del Trabajo y la Energía, es decir:

W = K_{f}-K_{o} (3)

Donde son K_{o}, K_{f} las energías cinéticas traslacionales inicial y final, medidos en joules.

Al aplicar la definición de energía cinética traslacional, expandimos y simplificamos la ecuación como sigue:

W = \frac{1}{2}\cdot m \cdot (v_{f}^{2}-v_{o}^{2}) (4)

Donde:

m - Masa del bloque, medido en kilogramos.

v_{o}, v_{f} - Rapideces inicial y final del bloque, medidos en metros por segundo.

\frac{2\cdot W}{m} = v_{f}^{2}-v_{o}^{2}

v_{f} = \sqrt{\frac{2\cdot W}{m}+v_{o}^{2}}

Si conocemos que W = 900\,J, m = 20\,kg y v_{o} = \sqrt{10}\,\frac{m}{s}, entonces la rapidez final del bloque es:

v_{f} = \sqrt{\frac{900\,J}{2\cdot (20\,kg)}+10\,\frac{m^{2}}{s^{2}}  }

v_{f} \approx 5.701\,\frac{m}{s}

La rapidez del bloque en la posición x = + 20 metros es aproximadamente 5.701 metros por segundo.

6 0
2 years ago
(will mark brainliest)Which of the following has the most potential energy?
Anastasy [175]
A car speeding down a 20 foot hill
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3 years ago
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A descriptive investigation is a type of _____.
denpristay [2]
It’s D or B Because investigation is some tho ur studying or experiment to know the final result Most likely D it’s not a or c
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3 years ago
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Irina18 [472]
<h2>Hello!</h2>

The answer is A. Chemical energy to heat energy to kinetic energy to electrical energy.

<h2>Why?</h2>

Let's check the energy conversion given in the statement:

Chemical energy: Chemical energy is usually obtained from a natural resource combustion. For this particular case is the result of natural gas combustion.

Heat energy: Heat energy comes from chemical reactions such as natural gas combustions.

Kinetic energy: Kinetic energy is obtained by turbines transforming the pressurized steam on mechanical movement. Turbines are formed by a turbine that absorbs the heat energy to do mechanical work and transmit it to an output rotating shaft.

Electrical energy: Electrical energy is generated by gas turbines when the rotating output shaft is connected to an electrical generator. Electrical generators use mechanical energy to generate electrical energy by using electromagnetic induction. Electrical generators are basically formed by a rotor and a stator.

Have a nice day!

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3 years ago
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