3 years ago

How long will it take you to swim 100 meters if you swim at a speed of 12.5 m/s?

Physics

1 answer:

saul85 [17]3 years ago

5 0

100 meters divided by a speed of 12.5 meters a second equals 8 seconds.

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If Earth were twice as far from the sun, the force of gravity attracting the Earth to the Sun would be

posledela

One quater as your moving away more!

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4 years ago

What would it be like to walk on Venus?

maria [59]

it will be very hot so that causes nobody to walk on venus because its the hottest outer planet.

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3 years ago

Which explains why more energy is released in nuclear reactions then in chemical reactions

beks73 [17]

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3 years ago

Astronaut Rob leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. Rob's destination is a star sys

olchik [2.2K]

Answer:

A) 15.0 years

Explanation:

Due to the distance to the star system is in light-year units, we can compute the time by using:

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then, Rob will take to complete the trip about 15 light-years.

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3 years ago

Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. Such a loudspeaker is mounted out

blondinia [14]

Answer:

$\theta = 20.98 degree$

Explanation:

As we know that the speed of the sound is given as

$v = 332 + 0.6 t$

now at t = 273 k = 0 degree

$v = 332 m/s$

so we have

$a sin\theta = N\lambda$

$a sin\theta = N(\frac{v_1}{f})$

now when temperature is changed to 313 K we have

$t = 313 - 273 = 40 degree$

now we have

$v = 332 + (0.6)(40)$

$v_2 = 356 m/s$

$a sin\theta' = N(\frac{v_2}{f})$

now from two equations we have

$\frac{sin19.5}{sin\theta} = \frac{332}{356}$

so we have

$sin\theta = 0.358$

$\theta = 20.98 degree$

7 0

3 years ago