All categories

4 years ago

How does the light source readout differ from the x-ray readout in the gizmo?

1 answer:

6 0

Radio waves and visible light are both forms of electromagnetic radiation, so they both travel at the speed of light in vacuum. What makes them different are their wavelengths (or synonymously their frequencies).The wavelengths of visible light span from about 390-700 nm, and the frequency from 430 to 790 THz.The wavelengths of radio waves go from about 1 mm to 100 km, and frequencies between 3 kHz and 300 GHz.The different sized wavelengths also give rise to slightly different properties. For example, since radio waves have a longer wavelength and lower frequencies, they are less energetic than visible light. Recall:Elight=hν=hcλ
where Elight is the energy of the light, h is Planck's constant, c is the speed of light, νis the frequency of light, and λ is the wavelength

You might be interested in

"A problem involves a car of mass m going down a track from a height H, and round a loop of radius r. The loop is frictionless.

neonofarm [45]

Answer:

Explanation:

At the topmost position, the car does not have zero velocity but it has velocity of v so that

v² /r = g or centripetal acceleration should be equal to g ( 9.8 )

Considering that, the car must fall from a height of 2r + h where

mgh = 1/2 mv²

= 1/2 m gr

So h = r/2

Hence the ball must fall from a height of

2r + r /2

= 2.5 r . So that it can provide velocity of v at the top where

v² / r = g .

4 0

3 years ago

A manometer that is filled with water (rho=1000 kg/m3) is connected to a wind tunnel to measure the pressure inside the test sec

Anna [14]

To develop this problem it is necessary to apply the concepts performed to the absolute pressure based on the reference pressure (atmospheric) and the pressure that is generated due to the height of the column of the measured liquid.

In mathematical terms the previous concept can be expressed as

$P_{abs} = P_{atm} -\rho gh$

Where

$P_{atm}=$ Atmospheric Pressure

$\rho =$ Density

g = Gravitational acceleration

h = Height

Our values are given as

$h = 10*10^{-3}m$

g = 9.8m/s

$\rho_{water} = 1000kg/m^3$

$P_{atm} = 100kPa$

Replacing we have then that

$P_{abs} = P_{atm} -\rho gh$

$P_{abs} = 100 -(1000)(9.8)(10*10^{-3})$

$P_{abs} = 99.9019kPa$

Therefore the absolute pressure in the test section is 99.9019kPa

6 0

3 years ago

What is the speed of the object in the graph? Explain

Nikolay [14]

Answer:

0.8m per second

Explanation:

we measure speed as distance over time

distance=8m

time=10s

therefore speed = 8/10

=0.8m per second

5 0

3 years ago

Read 2 more answers

a brand of a lightbulb has a power of 55w and an efficiency of 1.6% how much power is wasted as heat by this lightbulb

Maru [420]

98.4% of the power turns into heat.

If the bulb consumes 55 watts,
then it "wastes"

(0.984) x (55w) = 54.12 watts

5 0

3 years ago

According to the third law of planetary motion, the period of revolution of a planet is related to the planet’s _____.

matrenka [14]

Distance from the sun.

<span>The third law of planetary motion states that the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit</span>. The semi-major axis is the distance from the sun to the epicenter of the ellipse (which would be the planet in question). So, the revolutionary period is directly related to the distance of the planet from the sun.

7 0

3 years ago

Read 2 more answers