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3 years ago

What is the difference between a light wave and an infrared wave?

2 answers:

6 0

Answer:Infrared light has a wavelength that is longer than that of standard red light, and although considered part of the red color spectrum, infrared wavelengths are still much shorter

BlackZzzverrR [31]3 years ago

4 0

Infrared light has a wavelength that is longer than that of standard red light, and although considered part of the red color spectrum, infrared wavelengths are still much shorter than, for example, radio waves. Infra-red waves occur in the range from 1,000nm to a millimeter in length.

You might be interested in

How much work is needed to stop a 1,110 kg car that is moving straight down the

schepotkina [342]

Answer:

382.74 kJ.

Explanation:

The work that must be done to stop an 1100 kg car travelling at 59 km/h is - 382.74 kJ.

3 0

3 years ago

Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and

monitta

Answer:

$a=2,5m/s^2$

Explanation:

From the question we are told that:

Coefficient of kinetic friction $\mu= 0.200$

Vertical Mass $M_v=3kg$

Horizontal mass $M_h=3.00kg$

Generally the equation for kinetic force $F_k$ is mathematically given by

$F_k=\mu N\\F_k=0.2*3\\F_k=0.6$

Generally the equation for T is mathematically given by

$For M_v=3kg3g-T=3a$

For $M_h=3kg$

$T=M_v V+F_k\\T=3.0a+0.6$

Therefore substituting

$3-3a-0.6=3a\\2.4g=6a$

$a=2,5m/s^2$

3 0

3 years ago

Consider a wire of a circular cross-section with a radius of R = 3.17 mm. The magnitude of the current density is modeled as J =

Sloan [31]

Answer:

The current is $I = 8.9 *10^{-5} \ A$

Explanation:

From the question we are told that

The radius is $r = 3.17 \ mm = 3.17 *10^{-3} \ m$

The current density is $J = c\cdot r^2 = 9.00*10^{6} \ A/m^4 \cdot r^2$

The distance we are considering is $r = 0.5 R = 0.001585$

Generally current density is mathematically represented as

$J = \frac{I}{A }$

Where A is the cross-sectional area represented as

$A = \pi r^2$

=> $J = \frac{I}{\pi r^2 }$

=> $I = J * (\pi r^2 )$

Now the change in current per unit length is mathematically evaluated as

$dI = 2 J * \pi r dr$

Now to obtain the current (in A) through the inner section of the wire from the center to r = 0.5R we integrate dI from the 0 (center) to point 0.5R as follows

$I = 2\pi \int\limits^{0.5 R}_{0} {( 9.0*10^6A/m^4) * r^2 * r} \, dr$

$I = 2\pi * 9.0*10^{6} \int\limits^{0.001585}_{0} {r^3} \, dr$

$I = 2\pi *(9.0*10^{6}) [\frac{r^4}{4} ] | \left 0.001585} \atop 0}} \right.$

$I = 2\pi *(9.0*10^{6}) [ \frac{0.001585^4}{4} ]$

substituting values

$I = 2 * 3.142 * 9.00 *10^6 * [ \frac{0.001585^4}{4} ]$

$I = 8.9 *10^{-5} \ A$

5 0

4 years ago

The force of gravity between two objects is directly proportional to which of the following?

WINSTONCH [101]

The answer is:
D: The distance between the objects squared.

The gravitational force between two objects is proportional to their masses and inversely proportional to the square of the distance between their centers. Result: 'g' is independent of mass of object !! Hope this helped :)

7 0

3 years ago

What sort of element can be found in Group 13 of the periodic table?

frutty [35]

Answer:

Boron group

Explanation:

I googled

Good night

7 0

3 years ago