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3 years ago

How are Earth and Venus similar? How is Venus different from Earth? (Provide two similarities and two differences.)

1 answer:

8 0

Venus shares a similar size, surface composition, and has an atmosphere with a complex weather system. Venus is different from Earth because it spins the opposite direction of Earth and it’s rotation is very slow.

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What are the eight states of matter?

pishuonlain [190]

The eight states of matter are

Solid.
Liquid.
Gas.
Plasma.
Bose-Einstein Condensate.
Excitonium.
Degenerate Matter.
Photonic Matter.

7 0

3 years ago

Read 2 more answers

g A ray of light is incident on a flat reflecting surface and is reflected. If the incident ray makes an angle of 28.7° with the

Alex_Xolod [135]

Answer:

$\theta_2 = 15.8$ degree

Explanation:

given data:

$\theta_1 = 28.7 degree$

accoding to the snell's law

$n_1*sin\theta_1=n_2*sin\theta_2$

where n1 is refracting index of air = 1

n2 is refracting index of glass = 1.55

putting all value to get angle mad by incident ray with normal

$\theta_2 = \frac{1*sin28.7^{o}}{1.55}$

$\theta_2 = 15.8$ degree

3 0

3 years ago

“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.

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3 years ago

A 4.30 g bullet moving at 943 m/s strikes a 730 g wooden block at rest on a frictionless surface. The bullet emerges, traveling

Ymorist [56]

Answer:

(a)2.7 m/s

(b) 5.52 m/s

Explanation:

The total of the system would be conserved as no external force is acting on it.

Initial momentum = final momentum

⇒(4.30 g × 943 m/s) + (730 g × 0) = (4.30 g × 484 m/s) + (730 g × v)

⇒ 730 ×v = (4054.9 - 2081.2) =1973.7

⇒v=2.7 m/s

Thus, the resulting speed of the block is 2.7 m/s.

(b) since, the momentum is conserved, the speed of the bullet-block center of mass would be constant.

$V_{COM} = \frac{m_b}{m_b+m_{bl}}v_{bi}=\frac{4.30}{4.30+730}\times 943 m/s = 5.52 m/s$

Thus, the speed of the bullet-block center of mass is 5.52 m/s.

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4 years ago

Three polarizing filters are stacked, with the polarizing axis of the second and third filters at angles of 23.8 ∘ and 65.0 ∘, r

GalinKa [24]

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4 years ago