2 years ago

Why do we need satellites? (There is no science colum)

Physics

1 answer:

castortr0y [4]2 years ago

7 0

Answer:

Because they provide information about clouds, oceans, land and ice.

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Clouds in our atmosphere cause us to see the different phases of the moon.

krok68 [10]

Answer:

False

Explanation:

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3 years ago

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What medium is often used to transfer computer information? a. Air c. Glass b. Water d. Optic fibers Please select the best answ

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I would pick the only one that makes sense, D. optic fibers

Brainliest please

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3 years ago

If the distance d (in meters) traveled by an object in time t (in seconds) is given by the formula d=a+bt2, the si units of a an

ss7ja [257]

Distance , d = a+b $t^2$

The unit of d is in meter and t is in seconds.

So the unit of a a must be meter.

Now we have unit of b $t^2$ is meter.

So unit of b* $second^2$ = meter

Unit of b = meter/ $second^2$

So unit of a = m and unit of b = m/ $s^2$ .

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3 years ago

An astronaut drops a rock from the top of a crater on the moon. When the rock is halfway down to the bottom of the crater, its s

Alexxx [7]

Answer: vf1/vf2= 1/ sqrt(2)

Explanation :on the moon no drag force so we have only the force of gravity. aceleration is g(moon)= 1.62m/s2.the rest is basic kinematics

if the rock travels H to the bottom we can calculate velocity:

vo=0m/s (drops the rock) , yo=0

vf*vf= vo*vo+2g(y-yo)

when the rock is halfway y = H/2 so:

vf1*vf1=2*g*H/2 so vf1 = sqrt(gH)

when the rock reach the bottom y=H so:

vf2*vf2=2*g*H so vf2 = sqrt(2gH)

so vf1/vf2= 1/ sqrt(2)

good luck from colombia

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Is metal denting a physical change

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No it is a chemical change

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3 years ago