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ANEK [815]
3 years ago
7

Which of the following will most likely happen if you apply unbalanced forces to an object?

Physics
1 answer:
Assoli18 [71]3 years ago
3 0

Answer:

The object will likely start moving with a nonzero acceleration.

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If the wind is offshore (blowing away from the dock), one should carefully approach the dock at a 20 to 30 degree angle. A bow line is then passed ashore and secured. In boats having an outboard, or inboard/outboard engine, the engine is turned towards the dock and put in reverse. This invariably will bring the stern into the dock.

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Which statement is true?
Stella [2.4K]

A ) <em>Speed</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>scalar quantity and velocity is a vector quantity.</em>

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Is a lawn mower a drag force OR friction force
dalvyx [7]

Answer:

Pretty sure it's friction force

Explanation:

Because you pretty much just push it I guess

8 0
3 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
3 years ago
Here are the questions you need to answer for this assignment. After reading the questions carefully, pick arbitrary numbers to
MrRissso [65]

Answer:

this dont even explain the question

Explanation:

5 0
3 years ago
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