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3 years ago

I NEED HELP PLS ASAP IM LITERALLY CONFUSED??????????

Physics

2 answers:

Eduardwww [97]3 years ago

4 0

C. It pulls them together

Anastaziya [24]3 years ago

4 0

C: it pulls them together, gravity is constantly acting on everything and is pulling us to the ground

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A furlong is 220 yd. A fortnight is 2 weeks. Convert a speed of one furlong per fortnight to millimeters per second.

nlexa [21]

Answer:

$0.1663\frac{mm}{s}$

Explanation:

You need to convert furlongs to yards to mm:

$\frac{1 furlong}{1 fortnight}*\frac{220 yd}{1 furlong}*\frac{0.9144m}{1yd}*\frac{1000mm}{1m} = \frac{201168 mm}{1 fortnight}$

Now, we convert fortnight to seconds:

$\frac{201168 mm}{1 fortnight}$ * $\frac{1 fortnight}{2 weeks}*\frac{1 week}{7 days} *\frac{1 day}{24 h}*\frac{1 h}{3600s} = 0.1663\frac{mm}{s}$

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3 years ago

Sammy is talking to Sally. Position A is a position in front of Sammy's mouth. Position B is a position in front of Sally's ear.

notka56 [123]

Answer:

Explanation:

To listen the sound, the air particles must vibrates.

As the sound energy produce vibrations in the medium, so the air column exerts pressure, and then the air molecules set into vibrations and we hear sound as the diaphram set into vibrations.

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3 years ago

If we put a convex lens made by crown glass <br>in Carbondia sulphide what will happen?

7nadin3 [17]

Answer:

I don't knowI think it will break

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3 years ago

The orbit of an object is caused by what two factors *

amm1812

The initial force of motion and inward acting force

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3 years ago

1) A particle move along the x axis, as x=tsquare-2t+1(SI unit). (a) The functions of its velocity and accelerator vector agains

Bond [772]

Answer:

$\text{I believe this is calculus, no? But I believe that there should be a y-component of position}\\\text{But based off of the information provided, here goes:}\\\text{(a)}\\x'(t)=v(t)=\frac{d}{dt}t^2-2t+1\\v(t)=2t-2\text{ is the velocity vector}\\v'(t)=a(t)=\frac{d}{dt}2t-2\\a(t)=2 \text{ is the acceleration vector}\\\text{(b)}\\\text{Average Velocity }=\frac{x_{f}-x{i}}{t_{f}-t_{i}}\\=\frac{1-1}{2}=0, \text{based off of the information provided, the average velocity in the first 2 seconds}: 0m/s$

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3 years ago