1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nirvana33 [79]
3 years ago
5

what is the purpose of a control sample that is known to be from bighead carp in edna surveillance? a. to produce multiple bandi

ng patterns b. to amplify the dna in small samples c. to see if samples contain the target dna d. to identify each species of carp found
Physics
2 answers:
garri49 [273]3 years ago
8 0

Correct answer choice is :


C) To see if samples contain the target dna


Explanation:


In many North American rivers, populations of various kinds of non-native cyprinid fishes are present, including black carp, grass carp, bighead carp, silver carp, common carp, and goldfish. All six of these classes are found in the Mississippi River basin and following their aggression has shown complex, especially where wealth is low. The bighead carp is a species of freshwater fish, one of several Asian carps. It is one of the most intensively exploited fishes in aquaculture, with a yearly global product of over three million tonnes in 2013, mostly from China.

professor190 [17]3 years ago
4 0
I think the correct answer from the choices listed above is option C. The purpose of a control sample that is known to be from bighead carp in edna surveillance is to see if samples contain the target dna. A control sample is a set of sample that <span>does not receive treatment by the researchers.</span>
You might be interested in
From what expression was the word radar derived
tiny-mole [99]
RAdio Direction And Ranging
7 0
3 years ago
A solenoid is built with 870 turns uniformly distributed over a length of 0.390 m to produce a magnetic field of magnitude 1.00
Y_Kistochka [10]

Answer:

35.7 mA

Explanation:

The magnetic field inside a solenoid is given by:

B=\mu_0 I n (1)

where

\mu_0 = 4\pi \cdot 10^{-7} H/m is the vacuum permeability

I is the current

n is the number of turns per unit length

Since we have

N = 870 turns

L = 0.390 (length of the solenoid)

we can calculate n

n=\frac{N}{L}=\frac{870}{0.390}=2230.8

And now we can re-arrange eq.(1) to find the current, I:

I=\frac{B}{\mu_0 n}=\frac{1.00\cdot 10^{-4} T}{(4\pi\cdot 10^{-7} H/m)(2230.8m^{-1})}=0.0357 A = 35.7 mA

6 0
3 years ago
Two parallel metal plates are at a distance of 8.00 m apart.The electric field between the plates is uniform directed towards th
yuradex [85]

Answer:

C

Explanation:

Formula E=F/C also E=V/d

In this case use the second formula; E=V/d

Data given; E=4N/C d=8m

So v=E X d

     V=4x8=32V

k.e=eV= 2X32=64eV

3 0
4 years ago
Im stuck on number 4, am I just supposed to talk about theory because there is no given info.
Strike441 [17]

Explanation:

Assuming no air resistance, the horizontal acceleration at all points is 0, and the vertical acceleration at all points is -g (if near the surface of the Earth, -9.8 m/s²).

6 0
4 years ago
An 800-kHz radio signal is detected at a point 2.7 km distant from a transmitter tower. The electric field amplitude of the sign
dimaraw [331]

Answer:

Option D is correct: 170 µW/m²

Explanation:

Given that,

Frequency f = 800kHz

Distance d = 2.7km = 2700m

Electric field Eo = 0.36V/m

Intensity of radio signal

The intensity of radial signal is given as

I = c•εo•Eo²/2

Where c is speed of light

c = 3×10^8m/s

εo = 8.85 × 10^-12 C²/Nm²

I = 3×10^8 × 8.85×10^-12 × 0.36²/2

I = 1.72 × 10^-4W/m²

I = 172 × 10^-6 W/m²

I = 172 µW/m²

Then, the intensity of the radio wave at that point is approximately 170 µW/m²

7 0
3 years ago
Other questions:
  • if a car engine does 600,000 J of work over a 500m distance and the mass of the car is 250Kg then what is the final velocity of
    9·1 answer
  • Compare how magnetic forces act through non-magnetic materials and<br>magnetic materials:​
    6·1 answer
  • Which of the following would not be considered a projectile?
    14·1 answer
  • During which stage of sleep does most dreaming occur
    11·1 answer
  • Please answer both questions and not just one. Thanks!
    8·1 answer
  • How are mass and weight different? how does gravity affect mass and weight
    8·1 answer
  • A white dwarf is not continuing in nuclear fusion, yet it still shines brightly for thousands of years because...
    5·1 answer
  • The best leaper in the animal kingdom is the puma, which can jump to a height of 3.7m when leaving the ground at an angle of 45
    7·1 answer
  • The reaction K + H2O ⟶ KOH + H2 is an example of?DecompositionSynthesisDouble ReplacementSingle Replacement
    11·1 answer
  • Increase of greenhouse gases, due to human activity, is melting sea ice at the poles. This causes changes in climate. Which thre
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!