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Papessa [141]
3 years ago
15

Javon walked 95 m to get ice cream. If he walked at a speed of 0.8 m/s,

Physics
1 answer:
antoniya [11.8K]3 years ago
5 0

Answer:

171.0 m/s is right answer

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Power output of an engine is with work (w=60,000) during 60 s Calculate the power of this work?*
igomit [66]

Answer:

<em>The power output of the engine is 1,000 Watt</em>

Explanation:

<u>Mechanical Power </u>

Power is the amount of energy transferred or converted per unit of time. In the SI, the unit of power is the watt, equal to one joule per second.

The power can be calculated as:

\displaystyle P=\frac {W}{t}

Where W is the work and t is the time.

The engine does a work of W=60,000 J during t=60 s. Calculate the power:

\displaystyle P=\frac {60,000}{60}

P = 1,000 Watt

The power output of the engine is 1,000 Watt

6 0
3 years ago
An object is falling toward Earth's surface, and its acceleration due to gravity is measured. What is NOT needed to calculate Ea
mario62 [17]

I think it's weight of the object.

7 0
3 years ago
A material that provides resistance to the flow of electric current is called a(n)
enyata [817]

Th correct answer to this question would be, Insulator. Notice in the question it says "Material". The question is basically asking, What item resists the flow of and electric current. A resistor is a device that suppose to strain the electric  current. And resistance is the measure of how well the material can conduct an electric charge. With all of that being stated, Insulator materials include paper, dry wood, rubber, glass, ect. Insulator products provides resistance.

Make sure you read the questions very carefully.

4 0
3 years ago
Read 2 more answers
Si una bala de 122 g que viaja a 350 m/s golpea a un policía con chaleco antibalas el cual soporta 120 J de energía, ¿la bala at
Zanzabum

Answer:

Puesto que la energia cinética traslacional es mucho mayor que la capacidad del chaleco antibalas, la bala atravesaría el chaleco antibalas.

Explanation:

Un chaleco antibalas soporta el disparo de una bala disipando la energía de esta última a través de su propio material. Si sabemos que el chaleco antibalas soporta 120 joules de energía, cabe saber si la energía cinética traslacional es igual o inferior a ese límite, significando que la bala no atravesaría el chaleco.

La energía cinética traslacional de la bala (K), in joules, queda expresada con la siguiente fórmula:

K = \frac{1}{2}\cdot m\cdot v^{2} (1)

Donde:

m - Masa de la bala, en kilogramos.

v - Rapidez de la bala, en metros por segundo.

Si sabemos que m = 0.122\,kg y v = 350\,\frac{m}{s}, entonces la energía cinética traslacional de la bala es:

K = 7472.5\,J

Puesto que la energia cinética traslacional es mucho mayor que la capacidad del chaleco antibalas, la bala atravesaría el chaleco antibalas.

4 0
3 years ago
If a layer was deposited but does not appear in the rock record, what has occured
nalin [4]
I think you forgot to give the choices along with the question. I am answering the question based on my research and knowledge. <span>If a layer was deposited but does not appear in the rock record, the thing that happened is erosion. I hope that this is the ans wer that has actually come to your desired help.</span>
5 0
3 years ago
Read 2 more answers
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