Chemicals are released by the damaged tissue to bring platelets to the area to become sticky and to plug the vessels. An inflammatory response occurs which brings immune cells to fight infection and other clotting factors come to begin forming a new tissue.
Answer:
11,627.91 kg/m^3
Explanation:
The computation of the density of the material is shown below
Given that
Mass , m = 1 kg
Height, H - 47 mm = 0.047 m
Diameter, d = 49 mm = 0.049 m
Now radius, r = D ÷ 2
= 0.049 ÷ 2
= 0.0245
Volume = πr^2h
= 3.14 × (0.0245)^2 × 0.047
= 0.000086m^3
Now the density of the material is
= mass ÷ volume
= 1÷ 0.000086m^3
= 11,627.91 kg/m^3
Answer:
b
Explanation:
i am on the same question got it wrong and it showed me the answer
Answer: 68.6 m/s
Explanation:
We have the following data:
is the speed of the train
is the speed of sound in air
is the frequency of the source of sound (the stationary signal)
is the required frequency
Now, this can be expressed mathematically as follows:
When the train approaches the source of sound the frequency is
:
(1)
When the train recedes the source of sound the frequency is
:
(2)
Let's divide (1) by (2) to simplify and the find
:
(3)
Isolating
:
(4)
(5)
Finally:
This is the speed of the train