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3 years ago

At which temperature could air hold the most water vapor?

Physics

1 answer:

Goshia [24]3 years ago

6 0

Explanation:

35 maybe hope it's right

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A small laser used as a pointer produces a beam of red light 5 mm in diameter, and has a power output of 5 milliwatts. What is t

Nata [24]

Answer:

434.0 V/m

Explanation:

The power output of the laser is:

$P=5 mW = 0.005 W$

while the radius of the beam is

$r=\frac{5 mm}{2}=2.5 mm = 0.0025 m$

so the cross-sectional area is

$A=\pi r^2 = \pi (0.0025 m)^2=2.0\cdot 10^{-5} m^2$

So the intensity of the laser beam is

$I=\frac{P}{A}=\frac{0.005 W}{2.0\cdot 10^{-5} m^2}=250 W/m^2$

The intensity of a laser beam is related to the magnitude of the electric field by

$I=\frac{1}{2}c\epsilon_0 E^2$

where

c is the speed of light

$\epsilon_0$ is the vacuum permittivity

Solving the formula for E, we find

$E=\sqrt{\frac{2I}{c\epsilon_0}}=\sqrt{\frac{2(250 W/m^2)}{(3\cdot 10^8 m/s)(8.85\cdot 10^{-12} F/m)}}=434.0 V/m$

4 0

3 years ago

Think of a way you could demonstrate elastic force to a younger student. Describe the procedure you would follow and the materia

Soloha48 [4]

Answer:

I feel like to demonstrate you would use an elastic band as the material. You obviously have to put force in order to see how far it stretches. From this you can also find about its resistance and durability

Also you have to make sure the distance between the two hands are equal as you want an accurate result.

7 0

3 years ago

The purpose of carbohydrate loading is to

Korolek [52]

Answer:

Carbohydrate loading, commonly referred to as carb-loading or carbo-loading, is a strategy used by endurance athletes, such as runners, to maximise the storage of glycogen (or energy) in the muscles and liver. C. maximize glycogen stores.

Explanation:

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3 years ago

Communication definition

PtichkaEL [24]

Answer:

the imparting or exchanging of information or news.

Explanation:

4 0

3 years ago

The electricity that is delivered to our homes from regional generating stations moves over transmission lines that are _____.

Kazeer [188]

The third option is the answer. low voltage and high current.
<span>From regional transmission, electricity distributed to our homes is in low voltage and high current.
Electricity from main power house is step up to higher voltage to reduce the losses of energy and then step down to lower voltage in regional transmission house.</span>

6 0

4 years ago

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