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
borishaifa [10]
3 years ago
9

Which evidence did Ottowa scientists collect in researching PCB concentrations in Alaska?

Physics
2 answers:
Sergio [31]3 years ago
7 0
PCBs were found in greater concentrations in lakes where more salmon spawned.
Olin [163]3 years ago
3 0
Hey mate!
You stuck?

The answer is C) PCBs were found in greater concentrations in lakes where more salmon spawned. Evidence of hti swas depicted in the Ottowa notes of travel.  

Hope this helps! :)
You might be interested in
Name any two liquid which are found in our human eyes​
Romashka [77]

Aqueous humor and vitreous humor are the liquids present in the human eye.

<em>Hope </em><em>it</em><em> helped</em><em> you</em><em>.</em><em>.</em><em>.</em><em> </em><em>pls </em><em>mark</em><em> brainliest</em>

8 0
2 years ago
When a condenser discharges electricity, the instantaneous rate of change of the voltage is proportional to the voltage in the c
e-lub [12.9K]

Answer:

460.52 s

Explanation:

Since the instantaneous rate of change of the voltage is proportional to the voltage in the condenser, we have that

dV/dt ∝ V

dV/dt = kV

separating the variables, we have

dV/V = kdt

integrating both sides, we have

∫dV/V = ∫kdt

㏑(V/V₀) = kt

V/V₀ = e^{kt}

Since the instantaneous rate of change of the voltage is -0.01 of the voltage dV/dt = -0.01V

Since dV/dt = kV

-0.01V = kV

k = -0.01

So, V/V₀ = e^{-0.01t}

V = V₀e^{-0.01t}

Given that the voltage decreases by 90 %, we have that the remaining voltage (100 % - 90%)V₀ = 10%V₀ = 0.1V₀

So, V = 0.1V₀

Thus

V = V₀e^{-0.01t}

0.1V₀ = V₀e^{-0.01t}

0.1V₀/V₀ = e^{-0.01t}

0.1 = e^{-0.01t}

to find the time, t it takes the voltage to decrease by 90%, we taking natural logarithm of both sides, we have

㏑(0.01) = -0.01t

So, t = ㏑(0.01)/-0.01

t = -4.6052/-0.01

t = 460.52 s

3 0
3 years ago
What is the formula of finding displacement​
xenn [34]
Displacement is the final position of the object minus the initial position of the object.
Xf - Xi. Displacement is not the distance of the object. If you go to the right 10m and to the left another 10m, your displacement is 0m. But your distance is 20m
8 0
3 years ago
How much does the Earth weigh? Why does the moon appear in the daytime?
ch4aika [34]

Answer:

moon disappear because of the rotation

7 0
3 years ago
A freezer has a coefficient of performance of 4.1. You place 0.45 kg of water at 16°C in the freezer, which maintains its temper
velikii [3]
Ohh this is quite a lot umm i’ll be back hold on
5 0
2 years ago
Other questions:
  • A ______is any push or pull in a direction
    10·1 answer
  • Which Of The Following Research Methods Are Widely Used By Psychologists?
    11·1 answer
  • A moving curling stone, A, collides head on with stationary stone, B. Stone B has a larger mass than stone A. If friction is neg
    13·1 answer
  • If the velocity of a 440 Hz sound is 1,265 ft/s in the air and 5,990 ft/s in seawater, find the wavelength of this sound in (a)
    13·1 answer
  • Two waves are in phase if they are of the same ___________.
    8·2 answers
  • Using a streak test on a mineral that is harder than 7 on Mohs scale would not be very useful True or False
    11·1 answer
  • Please helpppp meee 20 pts<br> Identify the arrows that show the correct direction of heat transfer.
    5·2 answers
  • A 10kg box is sliding at 50m/s. Find the momentum
    15·1 answer
  • Please answer this for 15 points
    13·1 answer
  • Please someone help me with this!!! ​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!