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3 years ago

Four important biogeochemical cycle

Engineering

2 answers:

taurus [48]3 years ago

6 0

Answer:

1. water cycle

2. carbon cycle

3. oxygen cycle

4. nitrogen cycle

olga55 [171]3 years ago

3 0

Answer:

The four important biogeochemical cycle are:

1 Water Cycle or Hydrologic Cycle

2 Carbon-Cycle

3 Nitrogen Cycle

4 Oxygen Cycle.

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A cylindrical metal specimen having an original diameter of 10.55 mm and gauge length of 54.5 mm is pulled in tension until frac

kumpel [21]

Answer:

(a) 53.94%

(b) 26.61%

Explanation:

Change in area will be given by

$\triangle A=\frac {\pi(R_o^{2}-r_n^{2})}{\pi R_o^{2}}$ where $\triangle A$ represent change in area R is radius and subscripts O and n represent original and new respectively.

Substituting 10.55/2 for original radius and 7.16/2 for new radius then

$\triangle A=\frac {\pi(5.275^{2}-3.58^{2})}{\pi 5.275^{2}}\times 100\approx 53.94$

(b)

Similarly, percentage elongation will be found by dividing the change in length by the the original length. In this case, rhe original length was 54.5mm and goes to 69 mm so the change in length is given by subtracting the final length from the original length

Percentage elongation is $\frac {69-54.5}{54.5}\times 100\approx 26.61$

6 0

4 years ago

Can you tell me important facts about Peggy A. Whitson?

Nat2105 [25]

Answer:

- She’s A Biochemist

- She’s An Accomplished Space Chef

- She holds the record for most time spent in a space station for an American astronaut — of any gender.

- She became the first woman to command the International Space Station twice.

- She made apple pie out of tortillas

6 0

3 years ago

Read 2 more answers

The inside temperature of a wall in a dwelling is 15°C. If the air in the room is at 21°C, what is the maximum relative humidity

Sveta_85 [38]

Given:

Wall's inside temperature, $T_{wa} = 15^{\circ}C$

Room air temperature, $T_{air} = 21^{\circ}C$

Solution:

To calculate percentage max relative humidity, we make use of steam table for saturated pressure of wall and air:

From steam table:

At $T_{wa} = 15^{\circ}C$ :

$P_{wa(sat)} = 1.7057 kPa$

At $T_{air} = 21^{\circ}C$ :

$P_{air(sat)} = 2.487 kPa$

Now,

$% Relative Humidity (RH)_{max} = \frac{P_{wa(sat)}}{P_{air(sat)}} \times 100$

$(RH)_{max} = \frac{1.7057}{2.487}\times 100$

(RH)_{max} = 68.58%

Therefore, max Relative Humidity of the air before the occurrence of condensation in wall is 68.85%

8 0

3 years ago

1. What kind of traffic sign is a red equilateral triangle pointing

Lady_Fox [76]

Answer:

stop

Explanation:

it would be stop I think because then the stop is a red sign. and it says stop in it

7 0

3 years ago

Read 2 more answers

If the coefficient of static friction between the block and the platform is μs = 0.4, determine the maximum speed which the bloc

MrRa [10]

Question:

A disc of radius 6m is rotating about its fixed centre with a constant angular velocity 3rad/s ( in the horizontal plane). A block is also rotating with the disc without slipping. If coefficient of friction between the block and disc is 0.4, determine the maximum speed which the block can attain before it begins to slip. Assume the angular motion of the disk is slowly increasing.

Answer:

Maximum Radius = 0.44m

Given

r = Radius = 6m

w = Angular Velocity = 3rad/s

μ = coefficient of friction between the objects = 0.4

There are four forces acting on the objects

1. Centripetal Forces

2. Friction

3. Blocks weight

4. Normal force on the block

The centripetal force acts inward toward the disk center.

The friction hinders the block's motion.

The block's weight acts on the disk

The normal force of the disk acting on the block.

The block's weight is equal to the normal force on the block because the block sits on the desk surface.

Centripetal force, Fc = mw²r

Friction,Fr = μN where N = Normal force = mg

Friction = μmg

The maximum distance rmax that we could place the block would be when Ff < Fc

We assume they are equal to solve for r

Ff = Fc

μmg = mw²r ---- divide through by m

μg = w²r ----- make r the subject of formula

r = μg/w² where g = 9.8m/s²

Plugging in the values

r = 0.4 * 9.8/3²

r = 0.435555555555555

r = 0.44m ----- Approximated

Explanation:

6 0

3 years ago

Four important biogeochemical cycle​

Four important biogeochemical cycle