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3 years ago

In what do electromagnetic waves cause disturbances when they transfer

Physics

2 answers:

IrinaVladis [17]3 years ago

5 0

Both electric and magnetic fields

Makovka662 [10]3 years ago

5 0

Answer should be b
hope this helps

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How does a logistic growth curve differ from an exponential growth curve?

Paladinen [302]

Firstly models are just predictors, they are not exact models. Exponential growth models are good when populations are small relative to the amount of resources available. ... This is where the exponential model breaks down. The logistic function tries to compensate for this with the carrying capacity.

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3 years ago

Read 2 more answers

The sound intensity of a certain type of food processor in normally distributed with standard deviation of 2.9 decibels. If the

Maru [420]

Answer: $(48.41,\ 52.19)$

Explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n=9$

Sample mean : $\ovreline{x}=50.3\text{ decibels}$

Standard deviation : $\sigma=2.9\text{ decibels }$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=z_{0.025}=1.96$

Now, the 95% confidence interval estimate of the (true, unknown) mean sound intensity of all food processors of this type :-

$50.3\pm (1.96)\dfrac{2.9}{\sqrt{9}}\\\\\approx50.3\pm1.89\\\\=(50.3-1.89,\ 50.3+1.89)=(48.41,\ 52.19)$

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3 years ago

The cat righting reflex is a cat's innate ability to orient itself as it falls in order to land on its feet. The righting reflex

Inessa [10]

Answer:

The solution is shown in the picture attached below

Explanation:

3 0

3 years ago

Ricardo is on vacation, doing some mountain climbing. He notices that the higher he goes up a mountain, the colder he feels. He

Irina-Kira [14]

Answer:

B. an inverse relationship

Explanation:

Here is the complete question

Ricardo is on vacation, doing some mountain climbing. He notices that the higher he goes up a mountain, the colder he feels. He remembers his physics teacher teaching about these types of relationships. What is the type of relationship between mountain elevation and temperature? A. a positive relationship B. an inverse relationship C. a neutral relationship D. a direct relationship

Solution

It is an inverse relationship because, as Ricardo's mountain elevation increases, he feels colder. So, as his mountain elevation increases, the temperature decreases.

Since one variable decreases while the other increases, it can only be an inverse relationship.

Let h be Ricardo's mountain elevation and T his temperature. So by inverse proportionality,

h ∝ 1/T

h = k/T

hT = k = constant

So, we have an inverse relationship and B is the answer.

8 0

3 years ago

Read 2 more answers

Two light sources can be adjusted to emit monochromatic light of any visible wavelength. The two sources are coherent, 2.04μm ap

tigry1 [53]

Answer:

Explanation:

Path difference for the observer = 2.04μm

For constructive interference

path difference = n λ

2.04μm = 5 x .408 or , 4 x .51 or 3 x .68μm

For visible wavelengths like .408 , .51 or .68 μm (400 to 700 nm) will the observer see the brightest light due to constructive interference.

B) If the two sources were not in line with the observer, but were still arranged so that one source is 2.04μm farther away from the observer than the other , in that case also , interference pattern will be visible .

c )

For destructive interference

2.04 μm = (2n+1)λ / 2

2.04μm = 3.5 x .58μm

2.04 μm = 4.5 x .45μm

So for .58μm and .45μm , destructive interference will take place

4 0

3 years ago