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algol13
3 years ago
11

A force of 3 newtons moves a 10 kilogram mass horizontally a distance of 3 meters. The mass does not slow down or speed up as it

moves. Which of the following must be true?
a) 9 joules of kinetic energy were produced
b) 9 joules of gravitational potential energy were produced
c) 9 joules of heat energy were produced
d) 9 joules of kinetic energy and heat were produced
Physics
1 answer:
Mashutka [201]3 years ago
3 0

Answer:

9 joules of heat energy was produced

Explanation: there is no acceleration therefore its not a kinetic energy

Energy= force × distance

= 3×3

=9

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Answer

given,

Power of sound   P = 35 W

Distance between micro phone and speaker = 50 m

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a) intensity of sound at micro phone is

               I = \dfrac{P}{A}

               I = \dfrac{35}{4\pi r^2}

               I = \dfrac{35}{4\pi\times 50^2}

                      I = 1.11 mW/m²

b) sound intensity level at the position of micro phone is

 \beta = 10 log (\dfrac{I}{I_0})

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3 0
3 years ago
Please need help on this
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There’s nothing to answer so I can’t help

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3 years ago
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Given data states the 5 resistors connected with the value,
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If I were to transmit a radio wave in our three dimensional world could a fourth dimensional “being” be able to receive it?
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3 years ago
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mafiozo [28]
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3 years ago
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