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castortr0y [4]
4 years ago
10

From the fact that virtually every galaxy is moving away from us and more distant galaxies are moving away from us at a faster r

ate than closer ones, we conclude that
Physics
1 answer:
dangina [55]4 years ago
6 0
The universe is expanding
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Is block b speeding up or slowing down once it is set into downward motion and the cat is on block a?
stepan [7]

Answer:

The answer is "Slowing down ".

Explanation:

please find the complete question in the attached file.

In this question, if the block B weight were accounted for by kinetic the friction of frame A, because the blocks pushed at a consistent speed throughout the beginning.

Afterward, on block A, the resistance intensity rises, which allows frames to also be negative, which is defined in the graph, that's why the answer Slowing down is correct.

6 0
3 years ago
The materials that made up their solar nebula can be categorized into the four general type as follows. Rank these materials fro
Alchen [17]

Answer: Hydrogen and Helium > Hydrogen compounds > Rocks > Metals

Explanation: The solar nebular system contains 98% Light Gases of both Hydrogen and Helium (produced in the Big Bang); followed by 1.4% of Hydrogen Compounds including water, methane, and ammonia; then followed by 0.4% of Rocks like Silicates; and lastly 0.2% of Metals including Iron, Nickel and Aluminium.

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3 years ago
Block A, with a mass of 4.0 kg, is moving with a speed of 2.0 m/s while block B , with a mass of 8.0 kg, is moving in the opposi
Anon25 [30]
Consider velocity to the right as positive.

First mass:
m₁ = 4.0 kg
v₁ = 2.0 m/s to the right

Second mass:
m₂ = 8.0 kg
v₂ = -3.0 m/s to the left

Total momentum of the system is
P = m₁v₁ + m₂v₂
   = 4*2 + 8*(-3)
  = -16 (kg-m)/s

Let v (m/s) be the velocity of the center of mass of the 2-block system.

Because momentum of the system is preserved, therefore
(m₁+m₂)v= -16
(4+8 kg)*(v m/s) = -16 (kg-m)/s
v = -1.333 m/s

Answer:
The center of mass is moving at 1.33 m/s to the left.
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3 years ago
Explain quantum zeno effect in one sentence
otez555 [7]
It’s a feature of quantum-mechanical systems allowing a particle's time evolution to be arrested by measuring it frequently enough with respect to some chosen measurement setting.
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3 years ago
How many electrons are available for bonding in oxygen
klasskru [66]
8 electron are needed for bonding
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4 years ago
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