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qwelly [4]
3 years ago
15

To test a hypothesis, a scientist designs a(n)______

Biology
1 answer:
charle [14.2K]3 years ago
6 0
  experiment, in the scientific method the hypothesis is tested through experimentation and if confirmed is called a theory.
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What is responsible for telling cells how to behave
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Elastic fibers are important to muscle tissue since they resist excessive stretching and help muscle fibers spring back to its o
brilliants [131]

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True

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What will happen to a plant if put in a box with only one hole?
vfiekz [6]

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3 years ago
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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

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\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
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