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3 years ago

10

DO I JUST DRAW A SIMPLE WATER MOLECULE? Sketch a space filling model of a water molecule, show polarity by label positive and ne

gatively charged regions of the molecule

1 answer:

Sophie [7]3 years ago

6 0

You sketch a water molecule and show a partial positive charge on the two Hydrogen atoms and a partial negative charge on the oxygen atom.

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The elements from this section of the periodic table all belong to the same

Lady_Fox [76]

Answer:

The answer is:

B) period

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3 years ago

It would really help if anyone could answers please and thanks

mojhsa [17]

well it would be A because 55 degrees is going strait well 75 is going literally straight up

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2 years ago

Read 2 more answers

In a closed system, as kinetic energy increases, what happens to potential energy?

kupik [55]

<h2>Because kinetic energy is proportional to the velocity squared, increases in velocity will have an exponentially greater effect on translational kinetic energy. Doubling the mass of an object will only double its kinetic energy, but doubling the velocity of the object will quadruple its velocity.</h2>

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2 years ago

Two spectators at a soccer game see, and a moment later hear, the ball being kicked on the playing field. The time delay for the

WINSTONCH [101]

Answer:

a)188.65m

b)154.35m

c)243.7m

Explanation:

Given data:

$t_A=0.55s$

$t_B=0.45s$

(a) The distance from the kicker to each of the 2 spectators is given by:

$d_A=v \times t_A$

where,

v= speed of sound

$t_A$ =time taken for the sound waves to reach the ears

$d_A=343\times 0.55=188.65$ m

(b) $d_B=v \times t_B$

where,

v= speed of sound

$t_B$ =time taken for the sound waves to reach the ears

$d_B=343\times 0.45=154.35m$

(c)As the angle b/w slight lines from the two spectators to the player is right angle,

hypotenuse=the distance b/w 2 spectators

and, the slight lines are the other 2 lines

$D^2=d_A^2+d_B^2\\D=\sqrt{188.65^2+154.35^2} \\D= 243.7m$

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2 years ago

One glass microscope slide is placed on top of another with their left edges in con- tact and a human hair under the right edge

-Dominant- [34]

Answer:

A dark fringe

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3 years ago