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Karolina [17]
2 years ago
10

Carl knows that water moves through different kinds of soil at different rates. How easily water moves through a soil is known a

s permeability. Carl decides to compare the permeabilities of different soil types.
To do this, Carl takes five identical flower pots with holes in the bottom and fills each one with different soil:
rocky, gravely dirt from the side of the road
potting soil from the store
clay soil from a nearby creek
sand from a store
dirt from his own backyard
Carl pours one liter of water into each pot and measures how much water flows out of the bottom in one minute.

Which of the following variables should be kept constant during this experiment?
Physics
1 answer:
adelina 88 [10]2 years ago
5 0

Answer:

c    The amount of water that goes in each pot

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A boat travels at 30 mph for a huge, solid cliff that is about 3,000 meters away. When the horn on the boat makes a toot, you ca
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Answer:The frequency of the echo is slightly decreased

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3 years ago
How to solve number 10
Vinil7 [7]

The 'formulas' to use are just the definitions of 'power' and 'work':

Power = (work done) / (time to do the work)

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Work = (force) x (distance) .

Combine these into one. Take the definition of 'Work', and write it in place of 'work' in the definition of power.

Power = (force x distance) / (time)

From the sheet, we know the power, the distance, and the time.  So we can use this one formula to find the force.

Power = (force x distance) / (time)

Multiply each side by (time):  (Power) x (time) = (force) x (distance)

Divide each side by (distance): Force = (power x time) / (distance).

Look how neat, clean, and simple that is !

Force = (13.3 watts) x (3 seconds) / (4 meters)

Force = (13.3 x 3 / 4) (watt-seconds / meter)

Force = 39.9/4 (joules/meter)

<em>Force = 9.975 Newtons</em>

Is that awesome or what !

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