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Anon25 [30]
4 years ago
14

White blood cells use __________ to help identify foreign In order to maintain optimal community health, the BEST plan for commu

nities would be to ______substances in the body
Physics
1 answer:
barxatty [35]4 years ago
4 0

Antibodies and antigens

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What is the displacement of the object?
sveta [45]

Answer:

Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

6 0
3 years ago
The chain reaction used in nuclear power plants involves a free _______ colliding with a _______ , forming more free neutrons an
sertanlavr [38]
-- Free neutrons collide with Uranium nuclei. 

If one is absorbed, then

-- the Uranium nucleus falls apart,

producing

-- smaller nuclei,
-- energy,

and

-- more free neutrons.
7 0
3 years ago
Read 2 more answers
Mary takes 6.0 seconds to run up a flight of stairs that is 102 meters long. If Mary's weight is 87 newtons, what power has Mary
fredd [130]

Answer: 1479watts

Explanation:

Power is defined as the energy expended or work done in a specific time.

Mathematically,

Power = Workdone/time taken

Since work done is force × distance

Power = force × distance/time

Force = Mary's weight = 87N

Distance = height of the flight = 102meters

Time = 6.0seconds

Substituting in the formula we have;

Power = 87 × 102/6

Power = 1,479watts

Note that the time must be in seconds before usage. If its given in minutes, you will have to convert to seconds

8 0
3 years ago
What is the kinetic energy of a 2,000-kilogram boat moving at 5 m/sec??
skad [1K]
You use the equation kinetic energy = 1/2 mass X velocity^2 so your answer is 25000J.
7 0
3 years ago
A farmer with 600 ft of available fencing wants to enclose a rectangular are located adjacent to a farmhouse (with no fencing re
Goshia [24]

Answer:

The corresponding dimensions will be "x = 300 & y = 60".

Explanation:

Available fencing = 600 ft

Fencing,

⇒  5y+x=600

⇒  x=600-5y

As we know,

⇒  Area =xy

On substituting the given values, we get

             =(600-5y)y

             =600y-5y^2 ...(equation 1)

On differentiating with respect to y, we get

⇒  \frac{dA}{dy} =600-10y

       0 = 600-10y

    600=10y

       y=\frac{600}{10}

       y=60

On putting the values of y in equation 1, we get

⇒  600(60)-5(60)^2

⇒  600(60)-5(3600)

⇒  36000 - 18000

⇒  18000

Dimensions of the rectangular area:

x = 300

y = 60

3 0
3 years ago
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