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Talja [164]
3 years ago
12

The law of conservation of energy states that energy cannot be vor destroyed.

Physics
1 answer:
weqwewe [10]3 years ago
3 0

Answer:

True

Explanation:

Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another.

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A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 r
sertanlavr [38]

Answer:

Explanation:

The problem is based on conservation of angular momentum.

Moment of inertia of the disc = 1/2 m R² , m is mass of the disc and R is its radius.

= 1/2 x 98.1 x 1.51²

= 111.84 kg m²

Moment of inertia of disc + moment of inertia of bananas + monkey

= 1/2 x 98.1 x 1.51² + 9.29 x .45 x 1.51 + 20.3 x 1.51² ( moment of inertia of banana and monkey will be equal to mass x radial distance from axis² )

= 111.84 + 6.31 +46.28

= 164.43 kg m²

Now applying law of conservation of angular momentum

= I₁ ω₁ = I₂ω₂

111.84 x 1.69 = 164.43 x ω₂

ω₂ = 1.15 rad / s

6 0
3 years ago
Compare positive reinforcement and negative reinforcement.
Sergeeva-Olga [200]
Positive reinforcement you give praise and treats when they get something right negative you punish them for getting something wrong. Positive builds confidence and drive to get something right and negative builds fear of doing something wrong
4 0
2 years ago
Which group number is aluminum in?
Tatiana [17]

Answer:

13

Explanation:

on the periodic table you can find it under the abbreviation AI

6 0
3 years ago
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What emerging technologies will make hydroelectric energy source safer, more usable, more efficient, cleaner, etc?
vitfil [10]
<h2>Emerging Technologies that will make Hydroelectric Energy Source Safer</h2>

The variation in technology to labor lower loads and higher peaks make the hydroelectric energy source safer, more usable, more efficient and cleaner. The plants can also adapt speed drives changing the capability to suffice various sorts of demands which includes great speed response. Such variation can alter the income rate by 85%. The spread of operating range of the plant can increase income rate by 61%.

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3 years ago
With what speed must a ball be thrown directly upward so that it remains in the air for 10 seconds?
MA_775_DIABLO [31]

Answer:

◆ See the attachment photo.

◆ Don't forget to thanks

◆ Mark as brainlist.

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