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liubo4ka [24]
2 years ago
14

A rock, which weighs 1400 n in air, has an apparent weight of 900 n when submerged in fresh water (998 kg/m3). the volume of the

rock is:
Physics
1 answer:
kenny6666 [7]2 years ago
5 0
Apparent weight = Weight - Weight of the displaced Liquid 
<span>900 = 1400 - V x 998 x 9.8 </span>
<span>V = 5.1 x 10^-2 m^3 </span>

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A wildebeest and chicken participate in a race over a 2.00km long course. the wildebeest travels at a speed of 16.0m/s and chick
Nezavi [6.7K]

Answer:

(a)  The distance of the chicken from the finish line is 62.5 m

(b) The stationary time of the wildebeest is 675 s

Explanation:

Given;

total distance traveled by wildebeest and chicken, d = 2 km = 2000 m

speed of the wildebeest, v_w = 16 m/s

speed of the chicken, v_c = 2.5 m/s

Time for wildebeest to finish the race without stopping, 2000 / 16 = 125 s

Time for chicken to finish the race without stopping, 2000/2.5 = 800 s

(b) for how long in time (in s) was the wildebeest stationary?

t(stationary) = t(chicken) - t(wildebeest)

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t = 675 s

(a) how far (in m) is the chicken from the Finish Line when the wildebeest resume the race?

The time taken for the wildebeest to run 1.6 km (1600 m) is given by;

t = 1600 / 16 = 100 s

The total time spent by the wildebeest before it resumed the race = stationary time + 100s

t (total) = 675 s + 100 s = 775 s

Distnace traveled by the chicken when the wildebeest resumed the race = 2.5m/s x 775s = 1937.5 m

Thus, the distance of the chicken from the finish line = 2000 m -  1937.5 m

the distance of the chicken from the finish line = 62.5 m

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2 years ago
Isabella drops a pen off her balcony by accident while celebrating the successful completion of a physics problem. assuming air
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U = 0, initial vertical velocity

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The ends of a massless rope are attached to two stationary objects (e.g., two trees or two cars) so that the rope makes a straig
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Answer: They are all true

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d. The forces exerted on the two objects by the rope must be in the direction of the rope.

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great rest of Black History Month! :-)  

- Cutiepatutie ☺❀❤

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(d) A beam of white light shines onto a sheet of white paper. An identical beam of light shines onto a mirror. The light is scat
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QUESTION:-A beam of white light shines onto a sheet of white paper. An identical beam of light shines onto a mirror. The light is scattered from the paper and reflected from the mirror.
Describe how scattering by paper and reflection by a mirror are different from each other.


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2 years ago
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