3 years ago

A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.400s.

Physics

1 answer:

stiks02 [169]3 years ago

3 0

Answer:

a) 138.09m

b) 138.09m

Explanation:

The detailed steps and appropriate formula used is as shown in the attached file.

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Two ropes are attached to a 35 kg object. The first rope applies a force of 20 N and the second applies a force of 55 N. If the

Goshia [24]

Answer:

$a=1.672\ m.s^{-2}$

Explanation:

Given:

mass of the object, $m=35\ kg$

forces by two mutually perpendicular ropes of the attached to the object:

$F_x=20\ N$

$F_y=55\ N$

<u>Now we find the resultant force effect due to the two given forces:</u>

$F=\sqrt{F_x^2+F_y^2}$

$F=\sqrt{(20)^2+(55)^2}$

$F=58.52\ N$

<u>Now the acceleration will be due to this resultant force:</u>

$a=\frac{F}{m}$

$a=\frac{58.52}{35}$

$a=1.672\ m.s^{-2}$

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Vladimir79 [104]

Answer:

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Explanation:

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Chemical to thermal to electrical current: Burning of coal or natural gases. Gravitational potential to kinetic to electrical current.

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Your oven has a power rating of 5000 watt...

romanna [79]

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Answer:

B. over the symbol.

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