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Elanso [62]
3 years ago
14

What is power? Question options: Power is the ability to do work. Power is the rate at which work is done. Power is the amount o

f work that is done. Power is the product of force applied that displaces an object.
Physics
2 answers:
nika2105 [10]3 years ago
7 0

Power in physics is work done over time. So the answer is Power is the rate at which work is done.

Galina-37 [17]3 years ago
7 0

the product of force applied that displaces an object is work done; not power

the amount of work that is done is work done; not power

Power is the ability to do work is acceptable if the subject is english

but the right ans here is Power is the rate at which work is done.


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Mt. Asama, Japan, is an active volcano. In 2009, an eruption threw solid volcanic rocks that landed 1 km horizontally from the c
Nata [24]

Answer:

a) 69.3 m/s

b) 18.84 s

Explanation:

Let the initial velocity = u

The vertical and horizontal components of the velocity is given by uᵧ and uₓ respectively

uᵧ = u sin 40° = 0.6428 u

uₓ = u cos 40° = 0.766 u

We're given that the horizontal distance travelled by the projectile rock (Range) = 1 km = 1000 m

The range of a projectile motion is given as

R = uₓt

where t = total time of flight

1000 = 0.766 ut

ut = 1305.5

The vertical distance travelled by the projectile rocks,

y = uᵧ t - (1/2)gt²

y = - 900 m (900 m below the crater's level)

-900 = 0.6428 ut - 4.9t²

Recall, ut = 1305.5

-900 = 0.6428(1305.5) - 4.9 t²

4.9t² = 839.1754 + 900

4.9t² = 1739.1754

t = 18.84 s

Recall again, ut = 1305.5

u = 1305.5/18.84 = 69.3 m/s

7 0
3 years ago
What's the noun in "she is my favorite english teacher"
OleMash [197]

Answer:

i think it is <u>teacher</u>

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because it is noun

7 0
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Read 2 more answers
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Misha Larkins [42]

Answer:+1.25 m/s

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Given

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v=\dfrac{10\times10}{80}=+1.25\ m/s

Therefore the velocity of the person holding the ball is 1.25 m/s

This collision represents the perfectly inelastic collision where particles stick together after the collision.

7 0
2 years ago
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