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suter [353]
3 years ago
14

Samuel tripped while playing basketball and skinned his knee on the concrete. Many of the skin cells on that knee were killed or

removed entirely, leaving his knee open and unprotected. Eventually, his knee scabbed over, and when the scabs fell off, there was new skin underneath. Where did the new skin come from? A. Extra skin cells from other parts of Samuel's body were moved to the injury. B. Existing skin cells near the injury reproduced to make new cells. C. Skin cells near the injury increased in size to cover the injury. D. Existing cells near the injury changed into skin cells to cover the injury.
Physics
1 answer:
kvv77 [185]3 years ago
3 0
The answer is B. Old cells need to create new cells to replenish the ones that were lost.
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sukhopar [10]

Answer:

The coordinates of the point is (0,0.55).

Explanation:

Given that,

First charge q_{1}=9\times10^{-6}\ C at origin

Second charge q_{2}=6\times10^{-6}\ C

Second charge at point P = (0,1)

We assume that,

The net electric field between the charges is zero at mid point.

Using formula of electric field

E=\dfrac{kq}{r^2}

0=\dfrac{k\times9\times10^{-6}}{d^2}+\dfrac{k\times6\times10^{-6}}{(1-d)^2}

\dfrac{(1-d)}{d}=\sqrt{\dfrac{6}{9}}

\dfrac{1}{d}=\dfrac{\sqrt{6}}{3}+1

\dfrac{1}{d}=1.82

d=\dfrac{1}{1.82}

d=0.55\ m

Hence, The coordinates of the point is (0,0.55).

3 0
3 years ago
If your mass is 20kg, and you stand on the scale (witch is your force), and the acceleration due to gravity is10m/s^2, what does
Phantasy [73]
Weight = (mass) x (gravity)

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5 0
3 years ago
Read 2 more answers
Two particles in a high-energy accelerator experiment are approaching each other head-on, each with a speed of 0.9520c as measur
Over [174]

Answer:

the magnitude of the velocity of one particle relative to the other is 0.9988c

Explanation:

Given the data in the question;

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since each particle travels with the same speed,

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v_r = 1.904c / ( 1 + 0.906304 )

v_r = 1.904c / 1.906304

v_r = 0.9988c

Therefore, the magnitude of the velocity of one particle relative to the other is 0.9988c

5 0
3 years ago
How are mass and inertia related
DiKsa [7]
Hello :))

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8 0
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Calculate the density of a tin of mass 100g whose dimensions are 2cmx5cmx​
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