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nexus9112 [7]
3 years ago
7

if a person pulls on a cart to the right with a force of 10 Newtons and another person pulls to the left with the force of 3 New

tons what is the net force
Biology
1 answer:
Digiron [165]3 years ago
7 0

Answer:

10N - 3N = 7N

It's been awhile since I've had to do this, so I hope this is the correct way to get the answer

Hope this helps though!

Explanation:

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The study of which structure was instrumental in the formulation of the modern cell theory?
Sphinxa [80]
C. cell wall. This discovery was made by Robert Hooke upon studying the honeycomb like structure of cork and compared it to the dead appearance of the cell wall.
7 0
3 years ago
After a dye diffuses uniformly throughout a glass of water, the dye molecules are no longer moving. True or false?
Anton [14]
The answer is false, liquid molecules continue to move even after the concentration is uniform.

Diffusion happens because there’s a concentration gradient between the dye and the water, therefore dye molecules moves to the water area. But note that this is only the net movement of the molecules, which means, even if more molecules are moving towards water, there are still some dye molecules that are moving in the opposite direction.

So, after the concentration is equal, the motion of the dye molecules does not stop, they still move in random directions, but there’s no net movement instead, as there’s no concentration gradient. Remember molecules are always moving in all directions , it just depends on whether there’s a net movement or not. If there’s no net movement, the amount of molecules moving to each and every direction is always equal.
8 0
3 years ago
A bacterial sample has a cell density of 1.85 x106 CFU/mL. What plate dilution should yield a countable plate? Which two dilutio
insens350 [35]

Answer:

Explanation:

Bacterial count in stock- 1.85x10^6 cfu/ml

Dilution methods

Take 100 uL or (0.1ml) from stock and add to 900ul (0.9ml) saline and mixed it- this makes 10^1dilution.

Now take 100ul from 10^1 dilution and add to next 900ul saline this is 10^2 dilution, similarly do upto 10^5 dilution.

Then take 100ul from 10^ 4 and 10^5 dilution seperately and plate on LB agar plate seperetely and count the colonies.

Cfu/ml formula= (No.of colonies x dilution factor)/0.1 ml

So suppose, 18 colonies formed on 10^4 dilution then total no. Of cells in stock will be 18x10^4/ 0.1= 18x10^5 cfu/ml.

If we dilute 10^4 or 10^5 that's leads to colony count of 18-19 colonies on 10^4 dilution while 2 colonies should come on plate of 10^5 dilution.

7 0
3 years ago
The human skull is not easily mistaken for the skull of another animal. <br> a. True <br> b. False
julsineya [31]
The answer is A, Truth
Hope this helped somehow ^-^
6 0
3 years ago
Read 2 more answers
PLEASE HURRY
Over [174]

Answer:

Infrasound

Explanation:

Infrasound, sometimes referred to as low frequency sound, describes sound waves with a frequency below the lower limit of audibility.

8 0
3 years ago
Read 2 more answers
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