6+6=8 move one match puzzle game
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Answer:
=
Explanation:
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Answer:
b) By what factor does the current change if the side dimensions of the membrane portion is halved? The other values do no change
increase by factor of 2
decrease by factor of 8
decrease by factor of 2
decrease by a factor of 4
increase by factor of 4
Answers
Answer:
Part a: The current is 1.49x10⁻¹² A
Part b: The current is decreased by a factor of 4.
Explanation:
Part a
The area is given as
A =(1.4*10⁻⁶)² =1.96*10⁻¹² m²
The resistance is given as where resistivity of the membrane material is 1.30 x 10⁷ ohms*m
R=pL/A =(1.3*10⁷)(7.5*10⁻⁹)/(1.96*10⁻¹²)
R=4.97x10¹⁰ ohms
So the resistance is 4.97x10¹⁰ ohms.
I=V/R =86.0x10⁻³/5.77x10¹⁰
I=1.49x10^⁻¹² A
So the current is 1.49x10⁻¹² A
b)
S=So/2=1.4/2 =0.7μm
A=(0.7*10^-6)^2=4.9*10⁻¹³ m²
R=pL/A =(1.3*10⁷)(7.5*10⁻⁹)/(4.9*10⁻¹³)
R=1.98x10¹¹ ohms
So the resistance is 1.98x10¹¹ ohms.
I=V/R =86.0x10⁻³/1.98x10¹¹
I2=4.52x10^⁻¹³ A
So the ratio of the new current vs the old current is as
I2/I=4.52x10^⁻¹³/1.49x10⁻¹²=0.25
So the current is decreased by a factor of 4.
2) moon
3) Kuiper Belt object
4) meteor
2. Which explanation of the solar system best fits the observations of the planets and how they orbit the sun?
1) A comet hit the sun and sent off fragments that became the planets.
2) The gravity of a large, massive star passing the sun ripped off blobs of material from it that formed the planets.
3) The planets formed at the center of a collapsing spinning cloud of gas and dust.
4) The sun and planets formed from a collapsing spinning cloud of gas and dust.
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Answer:
1: C. Kuiper Belt object
2: D. The sun and planets formed from a collapsing spinning cloud of gas and dust.
Explanation:
I just took the test!!!
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Answer:
8138.16
Explanation:
hope this helps
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Answers
Answer:
This new element belongs to the group 2.
Explanation:
In the periodic table, the vertical columns are called groups (or families). The elements in the same group share similar chemical and physical properties.
One of these properties is the same amount of outer valence electrons.
For example, in the group 1 the elements have 1 outer valence electron (If we assume that the element is in a neutral state which is without electrical charges).
If this new element has 2 electrons in its outer level it will belong to the group 2. The group 2 is well-known as alkaline earth metals.
For example, the magnesium (Mg) and the calcium (Ca) belong to the group 2.