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Marina86 [1]
3 years ago
7

*Free Brainliest* *Hard Science* *Heat*

Physics
1 answer:
Bess [88]3 years ago
8 0
<span>B. The ignition point for a given fuel is met.</span>
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A speaker vibrates at a frequency of 200 Hz. What is its period
Daniel [21]
Period,  T = 1/ f.
f = frequency =  200 Hz.

Period T =  1/200 =  0.005 seconds.
8 0
3 years ago
How can you edit the light wave to increase the photosynthesis in the plant?
muminat

Answer: C) Increase the amplitude of the wavelenghth to increase the intensity.

Explanation:

7 0
2 years ago
A playground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about
tankabanditka [31]

Answer:

8050 J

Explanation:

Given:

r = 4.6 m

I = 200 kg m²

F = 26.0 N

t = 15.0 s

First, find the angular acceleration.

∑τ = Iα

Fr = Iα

α = Fr / I

α = (26.0 N) (4.6 m) / (200 kg m²)

α = 0.598 rad/s²

Now you can find the final angular velocity, then use that to find the rotational energy:

ω = αt

ω = (0.598 rad/s²) (15.0 s)

ω = 8.97 rad/s

W = ½ I ω²

W = ½ (200 kg m²) (8.97 rad/s)²

W = 8050 J

Or you can find the angular displacement and find the work done that way:

θ = θ₀ + ω₀ t + ½ αt²

θ = ½ (0.598 rad/s²) (15.0 s)²

θ = 67.3 rad

W = τθ

W = Frθ

W = (26.0 N) (4.6 m) (67.3 rad)

W = 8050 J

6 0
2 years ago
Which one of the following lines best illustrates personification?
jekas [21]
C. A narrow wind complains all day.

Personification is a figure of speech wherein animals, objects, and ideas are given human traits or characteristics.

The narrow wind, which is an unseen object, was given a human trait which is complains.
3 0
2 years ago
Read 2 more answers
Need help asap I am confused and this is making my brain hurt
ICE Princess25 [194]

Answer: The answer is D.

Explanation: Momentum can be defined as mass in motion. All objects have mass so if an object is moving, then it has momentum it has its mass in motion. Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object.

3 0
2 years ago
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