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3 years ago

12

The capitary action of water is caused the cohesion of water molecules to different types of molecules and the adhesion of water

molecules with other water molecules true or false

1 answer:

s344n2d4d5 [400]3 years ago

5 0

Answer:

This is True

Explanation:

I just did this exact unit in bio last week I hope this helps ;)

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A spring scale hung from the ceiling stretches by 5.6 cm when a 2.0 kg mass is hung from it. the 2.0 kg mass is removed and repl

k0ka [10]

When the mass of 2.0 kg is attached to the spring, the force applied to the spring is the weight of the mass, so
$F_1 = m_1 g =(2.0 kg)(9.81 m/s^2)=19.62 N$
This force stretches the spring by $\Delta x_1 = 5.6 cm=0.056 m$ , so we can use Hook's law to find the spring constant:
$k= \frac{F_1}{\Delta x_1}= \frac{19.62 N}{0.056 m}=350.4 N/m$

Then the mass of 2.0 kg is removed and replaced with another mass m2=2.7 kg. The force produced by this mass is equal to its weight:
$F_2 = m_2 g =(2.7 kg)(9.81 m/s^2)=26.5 N$
And so, we can use again Hook's law to calculate the new stretch of the spring:
$x_2= \frac{F_2}{k}= \frac{26.5 N}{350.4 N/m}=0.076 m=7.6 cm$

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3 years ago

The earth pulls the moon towards it because of the earth has more mass and therefore moe

gregori [183]

The earth has more gravity

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3 years ago

Pressure in a hydraulic system is achieved by applying the force of gravity on a gas.

-Dominant- [34]

Your answer would be B. False. Due to in a hydraulic system, you can have pressure put on gas without gravity as well. Think of it like a shock absorber on a car, when you hit a bump in the road, the shock compresses, not due to gravity, but due to the weight of the car pushing down, while the wheel is pushing up. If anything, it would be closer to maybe, the law of inertia.
Hope this helps!

5 0

4 years ago

Read 2 more answers

What is the distance traveled when you stretch a rubber band 15 cm?

mrs_skeptik [129]

Answer:

15 cm

Explanation:

common sense

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3 years ago

Who would be harder to stop: a professional hockey player skating 4 m/s or a fifth grader sharing at 4 m/s and why

Tomtit [17]

A professional hockey player, because they would typically have more mass than a fifth grader.

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4 years ago