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3 years ago

How are visible light and microwaves the same?

1 answer:

3 0

Both of those are names we give to electromagnetic radiation
of different wavelengths.

"Microwaves" are electromagnetic waves with wavelengths
in the range of 1 millimeter to 10 centimeters.

"Visible light" is electromagnetic radiation with wavelengths
roughly in the range of 0.0004 to 0.0008 millimeters.

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A very long insulating cylinder of charge of radius 2.50 cm carries a uniform linear density of 15.0 nC/m. (

Pavlova-9 [17]

Answer:

r2 = 2.401557 cm

distance = 0.10 cm

Explanation:

given data

radius = 2.50 cm

density = 15.0 nC/m

voltmeter read = 175

solution

we know here potential difference that is express as

ΔV = $\frac{\lambda }{2\pi \epsilon _o} ln\frac{r2}{r1}$ ...........1

so here

$ln\frac{r2}{r1} = 2\pi \epsilon _o \times \frac{\triangle V}{\lambda }$

as here $\lambda$ is linear charge density

$\frac{r2}{r1} = e^{2\pi \epsilon _o \times \frac{\triangle V}{\lambda }}$

r2 = r1 × $e^{2\pi \epsilon _o \times \frac{\triangle V}{\lambda }}$

r2 = 2.40 × $e^{2\pi 8.85\times 10^{-12} \times \frac{175}{15\times 10^{-6} }}$

r2 = 2.401557 cm

and

here distance above surface will be

distance = r1 - r2

distance = 2.50 - 2.40

distance = 0.10 cm

4 0

3 years ago

A student rings a brass bell with a frequency of 300 Hz. The sound wave

Citrus2011 [14]

Answer:

16 m

Explanation:

i got is right on my ap3x test :)

3 0

3 years ago

Select the phrases that correctly describe density. Select one or more: a. Density is a physical property. b. Density determines

Serga [27]

Answer:

Options (A), (B), (D), and (E).

Explanation:

Density is a physical property that describes the relationship between mass and volume. This property shows whether an object will float or it will get sink. The density of substances changes with the changing temperature, as both are inversely proportional to each other.

Mathematically, density can be written as,

Density = $\frac{mass}{volume}$

ρ = $\frac{m}{v}$ , Where, ρ = density, m = mass, v = volume

Thus, the correct answers are options (A), (B), (D), and (E).

6 0

3 years ago

Hydrogen is found as a gas on Earth but exists in all four states in the solar

Viefleur [7K]

Answer: the sample of solid has less energy than the sample of gas

Explanation:

APEX

5 0

3 years ago

Why can acceleration include only a change in direction?

Fynjy0 [20]

First we shall look at some terms:

Velocity - frequency of change of an objects position.

Acceleration - frequency of change of an objects velocity

Since velocity covers both change in direction and speed, we can asume that the answer is B, not because it's the only one we worked with, but because the others don't make any sense:

A - this is not correct, because a chnage in direction can be done withough a change in speed.

C - The scientific definition of acceleration does include speed, and this is not a reasonable answer.

D - Velocity can change, unlike said in the sentence.

Hope it helped,

BioTeacher101

6 0

4 years ago

Read 2 more answers