Compared to the charge on a proton, the amount of charge on an electron is,

Which statement explains the polarity of a water molecule?

timofeeve [1]

Answer:

D. The oxygen side is partially negative because electrons are pulled toward the oxygen side.

Explanation:

The water molecule is polar by the virtue of covalent bonds and the hydrogen bonds within and between its molecule.

The oxygen side is partially negative because the electrons are pulled toward the oxygen side.

Between oxygen and hydrogen that makes up the water molecule, oxygen is more electronegative.

An electronegative atom has more affinity for electrons. Since the electrons in the molecule of water is shared between hydrogen and oxygen, the more electronegative specie which is water draws the electron more to itself.

This leaves a net negative charge on the oxygen atom.

8 0

2 years ago

A 40.0 kg wagon is towed up a hill inclined at 18.5 degrees with respect to the horizontal. The tow rope is parallel to the incl

sp2606 [1]

Answer:

7.9m/s

Explanation:

We are given that

Mass of wagon=40 kg

$\theta=18.5^{\circ}$

Tension= $140 N$

Initial velocity of wagon= $u=0$

Displacement=s=80 m

Net force applied on wagon= $F=T-mgsin\theta=140-40(9.8)sin18.5=15.7 N$

By using $g=9.8m/s^2$

$a=\frac{F}{a}=\frac{15.7}{40}=0.39m/s^2$

We know that

$v^2-u^2=2as$

Using the formula

$v^2=2\times 0.39\times 80$

$v=\sqrt{2\times 0.39\times 80}=7.9m/s$

5 0

3 years ago

A man is traveling from the back of a boat to the front of the boat at 2.0 m/s while the boat itself is traveling at 12.0 m/s to

Hatshy [7]

Based on the relative velocity of the man with respect to the boat and the dock:

Distance covered in 4.0 seconds relative to the boat = 8 m
Distance covered in 4.0 seconds relative to the dock = 56 m

<h3>What is relative velocity?</h3>

Relative velocity is the velocity of a body relative to another body which serves as a reference point.

Relative velocity is a vector.

Considering the velocity of the man and the boat:

The relative velocity of the man with respect to the boat = 2.0 m/s

Distance covered in 4.0 seconds relative to the boat = 2.0 m/s * 4.0 s

Distance moved = 8 m

Relative velocity of the man with respect to the dock = 12 + 2 = 14 m/s

Distance covered in 4.0 seconds relative to the dock = 14.0 m/s * 4.0 s

Distance moved = 56 m

In conclusion, the relative velocity is velocity with respect to a reference point.

Learn more about relative velocity at: brainly.com/question/24337516

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5 0

1 year ago

A fish cannot be killed by throwing an arrow into the water why?

olga55 [171]

Answer:

a fish cannot be killed by throwing an arrow into the water because you have to throw the arrow at the fish not just in the water….

Explanation:

common sense TwT

duhhh

3 0

1 year ago

Read 2 more answers

What is the maximum value of the electric field in an electromagnetic wave whose average intensity is 7.35 w/m2 ?

anastassius [24]

The maximum value of the electric field in an electromagnetic wave is 23.54 V/m.

<h3>What is an electromagnetic wave?</h3>

The oscillations between an electric field and a magnetic field produce waves known as electromagnetic waves, or EM waves. In other words, magnetic and electric fields oscillate to form electromagnetic (EM) waves.

Electromagnetic waves are produced when an electric field and a magnetic field interact. They are referred to as "electromagnetic" waves as a result. An electromagnetic wave's electric field and magnetic field are perpendicular to one another (at right angles). Additionally, they are perpendicular to the EM wave's direction.

In vacuum, EM waves move at a fixed speed of 3.00 x 108 ms-1. Neither the magnetic field nor the electric field can deflect them. However, they might show diffraction or interference. An electromagnetic wave can pass through any medium, including vacuum, solid materials, and air. It can spread or move from one area to another without the use of a medium. On the other hand, mechanical waves (such as sound waves or water waves) require a medium to propagate. Transverse waves include EM waves. The height and distance between the highest and lowest points of two successive waves, respectively, are thus used to measure them.

The highest point of a wave is referred to as the "crest," and the lowest point as the "trough." A variety of frequencies can be created by dividing up electromagnetic waves. The electromagnetic spectrum is what is meant by this. Radio waves, microwaves, infrared waves, X-rays, gamma rays, and other types of waves are EM waves.

To learn more about the, electromagnetic wave visit:

brainly.com/question/12289372

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7 0

1 year ago