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4 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics

2 answers:

Marina CMI [18]4 years ago

7 0

reflects all the wavelengths of visible light.

matrenka [14]4 years ago

4 0

the answer is d it reflects all the wavelengths of visible light.

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What gives the gem amethyst it's purplish color?

-Dominant- [34]

i think its iron...
Presence of trace elements, irradiation and iron impurities give the gem its purplish color .
:))
merry christmas

3 0

3 years ago

PLEASE ANSWER ASAP!! A photographer in a helicopter ascending vertically at a constant rate of 9.5 m/s accidentally drops a came

vodomira [7]

C should be the answer! :)))

3 0

3 years ago

Read 2 more answers

“You can’t get more energy from a machine than the amount of energy you put into it,” is one way of stating the law of conservat

goldenfox [79]

Answer:

Energy

Explanation:

One ways of stating the law of conservation of energy is that "you cannot get more energy from a machine than the amount of energy you put into it".

The law of conservation of energy states that in a system, energy is neither created nor destroyed but transformed from one form to another.

The energy in a system does not increase based on the premise of this law.

The efficiency of a machine can reduce but the energy is always conserved.
This is because energy is transformed to other forms.

5 0

3 years ago

What happened 1 billion years after the Big Bang?

maks197457 [2]

Explanation:

1 billion years after the big bang, the temperature is 20K and some stars and galaxies began to contract due to the gravitational contraction of the over densities of the previous universe. At about 10 billion years after the big bang, our earth and sun form

8 0

4 years ago

Two masses 1.2kg and 1.8kg are connected to the ends of a rod of length 2m. Find the moment of inertia about the axes, 1)going t

frutty [35]

Answers: 1) 3 kg m²

2) 2.88 kg m²

Explanation: Question 1

I = m(r)²+ M(r)²

I = 1.2 kg × (1 m )² +1.8 kg ×(1 m )²

∴ I = 3 kg m²

Question 2

ACCORDING TO THE DIAGRAM DRAWN FOR QUESTION 2

we have to decide where the center of gravity (G) lies and obviously it should lie somewhere near to the greater mass. (which is 1.8 kg). Since we don't know the distance from center of gravity(G) to the mass (1.8 kg) we'll take it as 'x' and solve!!

moments around 'G'

F₁ d ₁ = F₂ d ₂

12 (2-X) = 18 (X)

24 -12 X =18 X

∴ X = 0.8 m

∴ ( 2 - x ) = 1.2 m

∴ Moment of inertia (I) going through the center of mass of two masses,

⇒ I = m (r)² +M (r)²

⇒ I = 1.2 × (1.2)² + 1.8 × (0.8)²

⇒ I = 1.2 × 1.44 + 1.8 × 0.64

⇒ I = 1.728 + 1.152

⇒ ∴ I = 2.88 kg m²

∴ THE QUESTION IS SOLVED !!!

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8 0

3 years ago