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nignag [31]
3 years ago
12

A horse does 910 J of work in 380 seconds while pulling a wagon. What is the power output of the horse? Round your answer to two

significant figures.
Physics
1 answer:
frutty [35]3 years ago
7 0

Answer: 2.4 watts

Explanation:

Work done by horse = 910J

Time = 380 seconds

Power output of the horse = ?

Recall that power is the rate of doing work. Thus, power is workdone divided by time taken.

i.e Power = (work/time)

Power = 910J/380seconds

Power = 2.395 watts (rounded to two significant figures as 2.4 watts)

Thus, the power output of the horse is 2.4 watts

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A train having speed of 85 km/h takes 5 hours to travel from Kerala to Karnataka. Calculate the distance between Kerala and Karn
Morgarella [4.7K]

Answer:

the distance between Kerala and Karnataka is 425 km.

Explanation:

Given;

speed of the train, u = 85 km/h

time taken for the train to travel from Kerala to Karnataka, t = 5 hours

The distance between Kerala and Karnataka is calculated as;

Distance = speed x time

Distance = 85 km/h  x  5 h

Distance = 425 km

Therefore, the distance between Kerala and Karnataka is 425 km.

6 0
3 years ago
What can you infer about the changes in the environment over time at the mystery fossil dig site? Record your inferences in the
vivado [14]

the fossil informed us about the climatic and geographical changes that occurs in the environment over time.

<h3>What the mystery fossil dig site informed us about environment?</h3>

We can infer about the climate and geographical changes in the environment over time at the mystery fossil dig site because the fossil provides us information about the climatic condition as well as the geography of land when this fossil organism were alive.

So we can conclude that the fossil informed us about the climatic and geographical changes that occurs in the environment over time.

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4 0
2 years ago
A car accelerates from 0 to 30m/s in 3s. Calculate its acceleration
creativ13 [48]

Answer:

10 m/s2

Explanation:

a = v- u/ t

=>a = 30-0 / 3

= 30/ 3

= 10m/s2

8 0
3 years ago
An optical fiber is 1.0 meter long and has a diameter of 20 μm. Its ends are perpendicular to its axis. Its index of refraction
scoundrel [369]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The answer is a

Explanation:

The explanation is shown on the second uploaded image

6 0
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Match the major muscle group with its functional role.
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Sitting up, postural alignment

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Hamstrings

Walking

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God bless you. Because my soul almost left my body when i had to do this.

7 0
3 years ago
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