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pashok25 [27]
4 years ago
15

The principle of alignment means that you use conventions of typography, layout, color, and other visual elements to make sure t

hat readers can easily access your most important content. True or false?
Physics
1 answer:
vitfil [10]4 years ago
7 0

Answer: True

Explanation:

The principle of alignment means that conventions of typography such as; layout, color, and other visual elements should be used to make sure that readers easily access your most important content of a document. These cues call the attention of the readers to the most important sections of the document which you want them to really see.

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A model used for the yield y of an agricultural crop as a function of the nitrogen level n in the soil (measured in appropriate
pychu [463]

<span>The maxima of an equation can be obtained by taking the 1st derivative of the equation then equate it to 0.</span>The value of N that result in best yield is when dy/dn = 0.

Taking the 1st derivative of the equation y=(kn)/(9+n^2) :<span>
</span>

By using the quotient rule the form of the equation is:<span>
y = g(n) / h(n) 
where:</span>

g(n) = kn    --->    g'(n) = k 

<span> <span>h(n) = 9 + n^2     --->    h'(n) = 2n </span>
dy/dn is defined as:
<span>dy/dn = [h(n) * g'(n) - h'(n) * g(n)] / h(n)^2 
dy/dn = [(9 + n^2)(k) - (kn)(2n)] / (9 + n^2)^2 
dy/dn = (9k + kn^2 - 2kn^2) / (9 + n^2)^2 
dy/dn = (9k - kn^2) / (9 + n^2)^2 
dy/dn = k(9 - n^2) / (9 + n^2)^2 

<span>Equate dy/dn = 0, then solve for n 
k(9 - n^2) / (9 + n^2)^2 = 0 
k(9 - n^2) = 0 
9 - n^2 = 0 
n^2 = 9 
n = sqrt(9) 
n = 3 

<span>Answer: The nitrogen level that gives the best yield of agricultural crops is 3 units.</span></span></span></span>

5 0
3 years ago
A power plant uses 365 GJ/hr of energy from a boiler and extracts 18 GJ/hr as work from a turbine and rejects the remaining ener
ziro4ka [17]

Answer:

The rate of heat rejection will be 347 GJ/hr

Explanation:

We have given that power plant uses energy of 365 GJ/hr

So energy uses Q_B=365GJ/hr

Work done from turbine W_T=18GJ/hr

We have to find the rate of heat rejection to the atmosphere Q_C

We know that Q_B=W_T+Q_C

365=18+Q_C

Q_C=347GJ/hr

So the rate of heat rejection will be 347 GJ/hr

5 0
3 years ago
On a spacecraft, two engines are turned on for 789 s at a moment when the velocity of the craft has x and y components of v0x =
ddd [48]

Answer:

Explanation:

Given

time for which spacecraft turned on is 789 s

v_{0x}=5410 m/s

v_{0y}=8100 m/s

x=2.78\times 10^6 m

y=4.73\times 10^6 m

we know s=ut+\frac{at^2}{2}

2.78\times 10^6=5410\times 789+\frac{a_x(789)^2}{2}

2.78=4.268+a_x\times 0.622

a_x=-2.392 m/s^2

For y component

s=ut+\frac{at^2}{2}

4.73\times 10^6=8100\times 789+\frac{a_y(789)^2}{2}

4.73=6.39+a_y\times 0.622

a_y=-2.66 m/s^2

4 0
4 years ago
Ohm's law relates the current, voltage, and resistance in a circuit. Use Ohm's law to determine what will happen to the remainin
krek1111 [17]

Answer:

   R = ½ R₀

Explanation:

This is an exercise in Ohm's law,

           V = IR

in the initial case

           V₀ = I₀ R₀               (1)

indicates that the voltage remains constant and the current is doubled

             I = 2 I₀

           V₀ = I R

             

we substitute

           V₀ = 2 I₀ R

            R = ½ V₀ / I₀

we replace by equation 1

            R = ½ R₀

8 0
4 years ago
A solenoid of length 0.250 m and radius 0.0250 m is comprised of 440 turns of wire. Determine the magnitude of the magnetic fiel
Bad White [126]

Answer: 0.02654

Explanation:

in the attachment

6 0
4 years ago
Read 2 more answers
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