<u>Answer:</u> The correct statement is True.
<u>Explanation:</u>
There are two types of charges in the electric field:
- Negative charge known as electrons
- Positive charge known as holes
The above two are oppositely charged species and we also know that electric current is the flow of free electrons in a current.
Negative charges (Electrons) flow from the negative terminal to the positive terminal while positive charges (holes) flow from the positive terminal to the negative terminal. Thus, they move in the opposite direction.
Hence, the correct statement is True.
The cuts on the plasmid are done via restriction enzymes which are also known as molecular scissors. (B) Plasmid 2 is the one that got cut by the restriction enzyme.
<h3>What is the Plasmid?</h3>
A plasmid is a type of double-stranded, circular, tiny DNA molecule that differs from a cell's chromosomal DNA. Both bacterial and certain eukaryotic cells naturally contain plasmids. Plasmids frequently carry genes that give bacteria genetic advantages like antibiotic resistance.
<h3>What is the Restriction enzyme?</h3>
An isolated bacterial protein known as a restriction enzyme cleaves DNA at sequence-specific locations to create DNA fragments with a known sequence at each end. For several laboratory techniques, such as genetic engineering and recombinant DNA technologies, restriction enzymes are essential.
Hence, the cuts on the plasmid are done via restriction enzymes which are also known as molecular scissors. (B) Plasmid 2 is the one that got cut by the restriction enzyme.
To know more about Restriction enzymes, check out:
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Answer:
The steam will start to condense at 6.6 mm into the pipe
Explanation:
The volume flow rate =π×(50/1000)²/4×10 = 0.0196 m³/s
The specific volume of the steam = 1.769 m³/kg
Therefore;
The mass flow rate = 0.0196/1.769 = 0.011099 kg/s
The resistance of the insulation material = ln(0.075/0.05)/(2×π×0.075) = 0.860 K/W
The resistance of the outside film of the insulator = 1/(15×2×π×0.075×1) = 0.14147 K/W
The total resistance = 0.14147 + 0.860 = 1.00147 K/W
1/(UA) = 1.00147 K/W
A = 2×π×0.05×1
1/U = 0.3146
U = 3.178 W/m² K
We have;
T(x) = T₀ + (Tin - T₀) exp(-UπDx/mcp)
Therefore, when T(x) = 100°C, we have;
100 = 20 + (120 - 20)exp(-3.178×π×0.05x/(0.011099 × 1.33))
Solving, we get
x = 6.597× 10⁻³ m ≈ 6.6 mm
Therefore, the steam will start to condense at 10 mm into the pipe.
The answer is c: <span>1960 J
</span>Potential Energy :
<span>PE = m x g x h = 40*9.8*5=1960
</span>