1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
cestrela7 [59]
3 years ago
6

The temperature of a black body is 500 and its radiation is of wavelength 600 . If the number of oscillators with energy is 100

, 000, calculate the number of oscillators in the black body with energy 1 . (Accoding to Max. Planck, the number of oscillators with energy ℎ at a particular frequency is given by = = − ( ⁄ ) = − ( ⁄ ) (10 Marks) (b) Calculate the peak wavelength of a black body's radiation if the black body is at a temperature of 20 , 000 . (5 Marks)
Physics
1 answer:
stiks02 [169]3 years ago
4 0

Answer: An equation is missing in your question below is the missing equation

a) ≈ 8396

b) 150 nm/k

Explanation:

<u>A) Determine the number of Oscillators in the black body</u>

number of oscillators = 8395

attached below is the detailed solution

<u>b) determine the peak wavelength of the black body </u>

Black body temperature = 20,000 K

applying Wien's law / formula

λmax = b / T  ------ ( 1 )

T = 20,000 K

b = 3 * 10^6 nm

∴  λmax = 150 nm/k

You might be interested in
A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by V =[5.00m/s
beks73 [17]

Equation of velocity is given as

V =[5.00m/s−(0.0180m/s^3)t^2]i^ + [2.00m/s+(0.550m/s^2)t]j^

at t = 7.93 s

v = 3.87 \hat i + 6.36 \hat j

so the magnitude of the velocity is given as

v = \sqrt{3.87^2 + 6.36^2}

v = 7.45 m/s

Part b)

the direction of the velocity is given as

\theta = tan^{-1}\frac{6.36}{3.87}

\theta = 58.7 degree

part c)

for acceleration we know that

a = \frac{dv}{dt}

a = -0.036 t\hat i + 0.550\hat j

at t = 7.93 s

a = -0.285\hat i + 0.550\hat j

magnitude is given as

a = \sqrt{0.285^2 + 0.550^2}

a = 0.62 m/s^2

Part d)

for the direction of the motion

\theta = tan^{-1}\frac{0.550}{-0.285}

\theta = 117.4 degree

4 0
3 years ago
The lower the value of the coefficient of friction,the_the resistance to sliding​
malfutka [58]

Answer:

lower

Explanation:

The lower the value of the coefficient of friction, the lower the resistance to sliding.

The coefficient of friction is the ratio of the frictional force and the normal force pressing two surfaces in contact together.

               U  = \frac{F}{N}  

U is the coefficient of friction

F is the frictional force

N is the normal force

 We see that coefficient of friction is directly proportional to frictional force.

7 0
3 years ago
A hammer falls from a construction worker's hand 30m above the ground at the same time that a filled soft drink can is projected
drek231 [11]

For harmer:-

initial velocity=u=0m/s

Acceleration due to gravity=10m/s^2

Now

\\ \sf\longmapsto s=ut+\dfrac{1}{2}gt^2

\\ \sf\longmapsto s=0t+\dfrac{1}{2}(10)t^2

\\ \sf\longmapsto s=5t^2\dots(1)

For soft drink:-

u=24m/s

\\ \sf\longmapsto 30-s=(24)t+\dfrac{1}{2}(10)t^2

Using eq(1)

\\ \sf\longmapsto 30-5t^2=24t-5t^2

\\ \sf\longmapsto 24t=30

\\ \sf\longmapsto t=\dfrac{30}{24}

\\ \sf\longmapsto t=1.2s

After 1.2s they will meet.

Now

putting t in eq(1)

\\ \sf\longmapsto s=5t^2=5(1.2)^2=5(1.44)=7.2m

At the height of 7.2m they will meet

3 0
3 years ago
A 1.2 kg block is held at rest against the spring with a force constant k= 730 N/m. Initially, the spring is compressed a distan
Nesterboy [21]

Answer:

Compression distance: d \approx 0.102\,m

Explanation:

According to this statement, we know that system is non-conservative due to the rough patch. By Principle of Energy Conservation and Work-Energy Theorem, we have the following expression that represents the system having a translational kinetic energy (K), in joules, at the expense of elastic potential energy (U), in joules, and overcoming work losses due to friction (W_{l}), in joules:

K + W_{l} = U (1)

By definitions of translational kinetic and elastic potential energies and work losses due to friction, we expand the equation described above:

\frac{1}{2}\cdot m \cdot v^{2} +\mu\cdot m\cdot g \cdot s = \frac{1}{2}  \cdot k \cdot d^{2} (2)

Where:

m - Mass of the block, in kilograms.

v - Final velocity of the block, in meters per second.

\mu - KInetic coefficient of friction, no unit.

g - Gravitational acceleration, in meters per square second.

s - Width of the rough patch, in meters.

k - Spring constant, in newtons per meter.

d - Compression distance, in meters.

If we know that m = 1.2\,kg, v = 2.3\,\frac{m}{s}, \mu = 0.44, g = 9.807\,\frac{m}{s^{2}}, s = 0.05\,m and k = 730\,\frac{N}{m}, then the compression distance of the spring is:

\frac{1}{2}\cdot m \cdot v^{2} +\mu\cdot m\cdot g \cdot s = \frac{1}{2}  \cdot k \cdot d^{2}

m\cdot v^{2} + 2\cdot m\cdot g \cdot s = k\cdot d^{2}

d = \sqrt{\frac{m\cdot (v^{2}+2\cdot g\cdot s)}{k} }

d \approx 0.102\,m

4 0
3 years ago
What is the formula for calculating the net force of an object
stepan [7]

Answer:

Fg = gravitational force. When a force is applied on the body, not only the applied force is acting there are many other forces like gravitational force Fg, frictional force Ff and the normal force that balances the other force. Therefore, the net force formula is given by, FNet = Fa + Fg + Ff + FN.

8 0
3 years ago
Other questions:
  • Do takis burn the inside of your stomach
    10·1 answer
  • The current perception of the arrangement of an atom is represented in the picture at right.
    7·1 answer
  • How did the Planck mission help scientists learn about the age of the universe
    8·1 answer
  • If you weigh 637 N on Earth's surface, how much would you weigh on the planet Mars?
    11·1 answer
  • In understanding the trait of shyness, a behavioral geneticist will argue that:
    5·1 answer
  • What are some evidences of early peoples concern for teeth
    13·1 answer
  • NEED HELP Two skaters stand facing each other. One skater’s mass is 60 kg, and the other’s mass is 72 kg. If the skaters push aw
    9·2 answers
  • A tenis ball is thrown upwards from the edge of a cliff with a speed of 10m/s
    11·1 answer
  • The Gulf Stream has a cooling effect on the climate of nearby land areas. True or False
    10·1 answer
  • A resistor, an inductor, and a capacitor are connected in series to an ac source. What is the phase angle between the voltages o
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!