3 years ago

HELP ASAP PLEASE Which of the following mechanical waves have the same energy?

Physics

2 answers:

serious [3.7K]3 years ago

6 0

Answer:

1 and 4 is the answer

UNO [17]3 years ago

6 0

Answer:

1 and 4

Explanation:

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The gravitational attraction between two objects increases if

JulijaS [17]

Answer:

they are closer!!

Explanation:

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8 0

3 years ago

Can someone help me?

Alik [6]

Answer:

Resultant = 3.05N

Explanation:

$r = \sqrt{{5}^{2} + 5^{2} - 2(5)(5) \cos(120) }$

$r = \sqrt{25 + 25 - 50(0.8142)}$

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2 years ago

Which type of force will an object move towards?

Makovka662 [10]

Answer:

i think it's weakest

EDIT: It's net. I answered weakest but it was wrong and the correct answer was net. oops

Explanation:

if a strong force is acting on something it will push it away, meaning the object would go towards the weaker force

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2 years ago

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kirza4 [7]

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5 0

3 years ago

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Two parallel plates have equal and opposite charges. When the space between the plates is evacuated, the electric field is E= 3.

Nana76 [90]

Answer:

$\sigma_i=1.06*10^{-6}C$

Explanation:

When the space is filled with dielectric, an induced opposite sign charge appears on each surface of the dielectric. This induced charge has a charge density related to the charge density on the electrodes as follows:

$\sigma_i=\sigma(1-\frac{E}{E_0})$

Where E is the eletric field with dielectric and $E_0$ is the electric filed without it. Recall that $\sigma$ is given by:

$\sigma=\epsilon_0E_0$

Replacing this and solving:

$\sigma_i=\epsilon_0E_0(1-\frac{E}{E_0})\\\sigma_i=8.85*10^{-12}\frac{C^2}{N\cdot m^2}*3.40*10^5\frac{V}{m}*(1-\frac{2.20*10^5\frac{V}{m}}{3.40*10^5\frac{V}{m}})\\\sigma_i=1.06*10^{-6}C$

3 0

3 years ago