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3 years ago

Question 3 of 10

Biology

1 answer:

dedylja [7]3 years ago

8 0

Answer:

The correct answer:

B. GK, GK

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A sand storage tank used by the highway department for winter storms is leaking. As the sand leaks out, it forms a conical pile.

harina [27]

Answer:

Rate of change of volume of the pile $= 54\pi$

Explanation:

Given -

Rate of increase of the base of the pile $= 0.75$ inches per minute

Height of the pile $= 2 *$ the radius of the base

Let "h" be the height of the pile and "r" be the radius of the base.

Then $h = 2* r$

Radius "r" $= 6$ inches

Rate of change of radius i.e

$\frac{dr}{dt} = 0.75$

Volume of conical pile

$\frac{\pi }{3} * r^2 * h\\= \frac{\pi }{3} * r^2 * 2 * r\\= \frac{\pi }{3} *2* r^3$

Change in volume of conical pile

$\frac{dV}{dt} = \frac{dr}{dt} * \frac{6* \pi * r^2 }{3}$

Substituting the value of rate of change of radius, we get -

$\frac{dV}{dt} = 2 * \pi * (6^2) * (0.75)\\\frac{dV}{dt} = 54 \pi$

Rate of change of volume of the pile $= 54\pi$

8 0

3 years ago

Many farmers in less densely populated areas, such as amazonia, practice _______________, also known as shifting cultivation or

Norma-Jean [14]

Many farmers in less densely populated area, such as Amazonia, practice slash and burn agriculture, also known as shifting cultivation or swidden agriculture where an area is cleared and then burned for the vegetative remains to release nutrients back into the soil. Shifting cultivation is a system where a farmer uses a piece of land, only to abandon or alter the initial use a short time later. Advantages of shifting cultivation includes; enhance control of pest and disease, inorganic matter addition which provide nutrient to crop, an effective way of weed control

7 0

3 years ago

Suppose an enzyme that is involved in cellular respiration is assembled by a ribosome. where will this enzyme need to be transpo

Natasha2012 [34]

Needs to be transported to the mitochondria or the cytosol.


There are four stages of cellular respiration: glycolysis, pyruvate oxidation, Krebs cycle and Oxidative phosphorylation. Glycolysis takes place in the cytosol of a cell,while the pyruvate oxidation and the following steps take place in the matrix of the mitochondria. If the enzyme is involved in cellular respiration, it need to be in one of these places.

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4 years ago

30 points

puteri [66]

Answer:

i believe the answer is c

Explanation:

5 0

3 years ago

Material to diffuse is the variable.

Zina [86]

Material to diffuse is independent or dependent variable...