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Aleks [24]
3 years ago
10

What two things does the wavelength of peak of the blackbody

Physics
1 answer:
Georgia [21]3 years ago
8 0

Answer:

The correct option is;

c. Temperature and color

Explanation:

Based on Wien's Law which can be presented mathematically as follows;

\lambda _{max} = (0.29 \ cm \ K) / T

The wavelength of the peak of the blackbody curve tells the temperature and color.

An example is the Sun that  has a temperature of 5800 K, hence the peak wavelength is given by \lambda _{max} = (0.29 \ cm \ K) / 5800 = 0.00005 \ cm = 500 nano-meter from which the color can be deduced as 500 nano-meter is the wavelength of  yellow light.

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A box is placed on a 30o frictionless incline. What is the acceleration of the box as it slides down the incline
balandron [24]

Answer:

<em>2.78m/s²</em>

Explanation:

Complete question:

<em>A box is placed on a 30° frictionless incline. What is the acceleration of the box as it slides down the incline when the co-efficient of friction is 0.25?</em>

According to Newton's second law of motion:

\sum F_x = ma_x\\F_m - F_f = ma_x\\mgsin\theta - \mu mg cos\theta = ma_x\\gsin\theta - \mu g cos\theta = a_x\\

Where:

\mu is the coefficient of friction

g is the acceleration due to gravity

Fm is the moving force acting on the body

Ff is the frictional force

m is the mass of the box

a is the acceleration'

Given

\theta = 30^0\\\mu = 0.25\\g = 9.8m/s^2

Required

acceleration of the box

Substitute the given parameters into the resulting expression above:

Recall that:

gsin\theta - \mu g cos\theta = a_x\\

9.8sin30 - 0.25(9.8)cos30 = ax

9.8(0.5) - 0.25(9.8)(0.866) = ax

4.9 - 2.1217 = ax

ax = 2.78m/s²

<em>Hence the acceleration of the box as it slides down the incline is 2.78m/s²</em>

5 0
3 years ago
What are the different types of<br> technology?
LUCKY_DIMON [66]

Answer:

well theirs health, idustry, transport, comunication, information tech, and plenty more

Explanation:

can i plz have brainlyest it helps me continew helping people like you

3 0
3 years ago
A ball is launched with an initial horizontal velocity of 10.0 meters per second. It takes 500 milliseconds for the ball to reac
hichkok12 [17]

Answer:

500ms times 2 would be when the ball reaches the max horizontal distance.

Then to find the angle, use the formula of time to reach max height t = u sin theta / g . With t being the max height time 500ms, u being 10m/s

For initial vertical velocity just use u sin theta.

5 0
2 years ago
Speed (mph) 58 72 55 65 70 81 66 What car goes the fastest? Put the car speed in order, from fastest to slowest miles per hour.
RoseWind [281]

Answer:

The answer to your question is letter B

Explanation:

Data

Order from fastest to slowest speed

           58 72 55 65 70 81 66

The fastest is  81, then, 72, 70, then, 66, 65 finally 58 and 55

The correct order

       81 mi/h, 72 mi/h, 70 mi/h, 66 mi/h, 65 mi/h, 58 mi/h, 55 mi/h

The other options are from slowest to fastest or a different order.

7 0
3 years ago
Question 1
creativ13 [48]

Answer:

Epsilon Eridani

Explanation:

This is in the main sequence as you can see there is an area called "main sequence all you have to do is read all the stars and to see which one is in there and that is The epsilon eridani

6 0
3 years ago
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