Two mechanical waves can occupy the same space at the same time because waves

Physics

1 answer:

marta [7]4 years ago

6 0

Waves superimpose. You'll get what is called a complex waveform.

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3) 4 electrons are placed - one electron per corner - at the corners of a square of side 1 meter. One fixed proton is placed in

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Explanation:

i believe that they are all going at 3.2 meters each, I did 4 times 0.8

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How would you expect energy to change her in a chemical reaction?

igor_vitrenko [27]

The correct answer is option (c) i.e. Energy will be converted into another form.
<span>
During a chemical reaction, energy remains unchanged, It just gets converted into another form and doesn’t increases or decreases. Excess energy is released in the form of heat, light during a chemical reaction and thus, proving the law of conservation of energy which says, energy can neither be created nor destroyed. It just gets converted from one form to another form. </span>

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You are worried that a solid substance has dissolved in a beaker of water in a lab. What would be a way to separate the substanc

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3 years ago

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You pull with a force of 295 N on a rope that is attached to a block of mass 22 kg, and the block slides across the floor at a c

Sergeeva-Olga [200]

Answer:

Fnet = 0

Explanation:

Since the block slides across the floor at constant speed, this means that it's not accelerated.
According Newton's 2nd Law, if the acceleration is zero, the net force on the sliding mass must be zero.
This means that there must be a friction force opposing to the horizontal component of the applied force, equal in magnitude to it:

$F_{appx} = F_{app} * cos \theta = 295 N * cos 35 = 242 N (1)$

In the vertical direction, the block is not accelerated either, so the sum of the normal force and the vertical component of the applied force, must be equal in magnitude to the force of gravity on the block:

$F_{appy} = F_{app} * cos \theta = 295 N * sin 35 = 169 N (2)$

⇒ 169 N + Fn = Fg = 216 N (3)

This means that there must be a normal force equal to the difference between Fappy and Fg, as follows:
Fn = 216 N - 169 N = 47 N (4)

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3 years ago

Classify the following as either a specific or a nonspecific defense of the body's immune system.

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Skin is specific

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All are specific except fever

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