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3 years ago

Two pieces of evidence for plate tectonics?

Physics

2 answers:

djverab [1.8K]3 years ago

6 0

Explanation:

fossil and glaciers is the to pieces of evidence

Reika [66]3 years ago

5 0

Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. Some life "rode" on diverging plates, became isolated, and evolved into new species.

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Based on Archimedes' principle, we know that if an object displaces a given weight of water, then the object is being buoyed up

Virty [35]

True. If the amount displaced is more than the mass, it floats. If the amount is less than the mass, it will sink.

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3 years ago

Read 2 more answers

A tube is sealed at both ends and contains a 0.0100-m long portion of liquid. The length of the tube is large compared to 0.0100

Ahat [919]

Answer:

31.321 rad/s

Explanation:

L = Tube length

A = Area of tube

$\rho$ = Density of fluid

v = Fluid velocity

m = Mass = $\rho Al$

Centripetal force is given by

$F=\dfrac{mv^2}{L}\\ F=\dfrac{m(\omega L)^2}{L}\\ F=m\omega^2\\ F= 0.01A\rho\omega^2L$

Pressure is given by

$P=\dfrac{F}{A}=\rho gL\\\Rightarrow \dfrac{0.01A\rho\omega^2L}{A}=\rho gL\\\Rightarrow 0.01\omega^2=g\\\Rightarrow \omega^2=\dfrac{g}{0.01}\\\Rightarrow \omega=\sqrt{\dfrac{g}{0.01}}\\\Rightarrow \omega=\sqrt{\dfrac{9.81}{0.01}}\\\Rightarrow \omega=31.321\ rad/s$

The angular speed of the tube is 31.321 rad/s

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3 years ago

Before you leave for a trip, you should check

Evgen [1.6K]

-- make sure you have enough money;

-- make sure you arranged for someone to feed the dog and the goldfish;

-- make sure you turned off the faucets and the stove burners.

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3 years ago

A crane lifts a car with 9023 J of kinetic energy. The crane lifts the car with a speed

lapo4ka [179]

Answer:

m = 2301.8 [kg]

Explanation:

This problem can be solved in an easy way using the definition of kinetic energy, in this way you can clear the mass, depending on the known variables.

$E_{k}=0.5*m*v^2\\replacing\\\\9023 = 0.5 *m*(2.8)^2\\m = 2301.8[kg]$

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3 years ago

A fluid is a substance that can _____________ and takes the _____________ of its container.

mezya [45]

Evaporate
Shape

I wish there were provided answer choices. Hope this helped

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3 years ago