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kaheart [24]
3 years ago
7

1 A thing ring has a mass of 6kg and a radius of 20cm. calculate the rotational inertia. ​

Physics
1 answer:
marissa [1.9K]3 years ago
7 0

Answer:

2400kgm²

Explanation:

Rotational inertia=mass x radius²

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An organism's ________ is the way its genotype is expressed
juin [17]

The answer is Phenotype.

Phenotype is the observable traits on the organism which are mainly influenced by how the genotype of the organism interacts with the environment. An example of how phenotype is determined is when a gene has several alleles. The dominant alleles are expressed in phenotype while the recessive one is masked. Epistasis of alleles also occurs in many other cases.  


5 0
4 years ago
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A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provid
Sergeeva-Olga [200]

Answer:

8.37*10^5 rpm

Explanation:

Given that rotational kinetic energy = 4.66*10^9J

Mass of the fly wheel (m) = 19.7 kg

Radius of the fly wheel (r) = 0.351 m

Moment of inertia (I) = \frac{1}{2} mr ^2

Rotational K.E is illustrated as (K.E)_{rt} = \frac{1}{2} I \omega^2

\omega = \sqrt{\frac{2(K.E)_{rt}}{I} }

\omega = \sqrt{\frac{2(KE)_{rt}}{1/2 mr^2} }

\omega = \sqrt{\frac{4(K.E)_{rt}}{mr^2} }

\omega = \sqrt{\frac{4*4.66*10^9J}{19.7kg*(0.351)^2} }

\omega = 87636.04

\omega = 8.76*10^4 rad/s

Since 1 rpm = \frac{2 \pi}{60}  rad/s

\omega = 8.76*10^4(\frac{60}{2 \pi})

\omega = 836518.38

\omega = 8.37 *10^5 rpm

3 0
3 years ago
engine emits sound uniformly in all directions, radiating an acoustic power of 3.65 × 10 5 W. 3.65×105 W. Find the intensity of
Art [367]

Answer:

130.2dB

Explanation:

The formula for determining the intensity of a wave is expressed as

I=\frac{P}{A}\\

Where P is the power in watts, and A is the area of the sphere formed by the wave

Data given

Power,P=3.65*10^5W

distance,d=52.7

Hence since the distance represent the radius, we can determine the area of the sphere formed

A=4\pi r^{2}\\A=4\pi *52.7^{2}\\A=34900.45m^2

The intensity can be computed as

I=\frac{3.65*10^5}{34900.45}\\ I=10.46W/m^2

we can convert to decibel

I=10log\frac{10.46}{10^{-12}} \\I=130.2dB

4 0
3 years ago
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What does it mean for a liquid to be at its saturation point?
Llana [10]

Answer:

The rate of evaporation and the rate of condensation are the same.

Explanation:

I checked it myself on PennFoster

Hope This Helps!

4 0
3 years ago
Which thermodynamic process takes place at a constant temperature so that the internal energy of a system remains unchanged?
egoroff_w [7]
Isothermal process<span> is a </span>change<span> of a </span>system<span>, in which the </span>temperature<span> remains constant: Δ</span>T<span> = 0. So, if the thermodynamic process takes place at a constant temperature so that the internal energy of a system remains unchanged than this process is isothermal. 
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3 0
3 years ago
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