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
goblinko [34]
3 years ago
8

The intensity at a certain distance from a bright light source is 7.20 W/m2 .

Physics
1 answer:
Gemiola [76]3 years ago
8 0

Answer:

A) P_rad.abs = 2.4 × 10^(-8) Pa and P_rad.ref = 4.8 × 10^(-8) Pa

B) P_rad.abs = 2.369 × 10^(-13) atm and P_rad.ref = 4.738 × 10^(-13) atm

Explanation:

A) The formula for radiation pressure for absorbed light is given as;

P_rad = I/c

Where I is the intensity = 7.20 W/m² and c is the speed of light = 3 × 10^(8) m/s

Thus;

P_rad = 7.2/(3 × 10^(8))

P_rad.abs = 2.4 × 10^(-8) Pa

Now formula for radiation pressure for reflected light is given as;

P_rad = 2I/c

Thus;

P_rad = (2 × 7.2)/(3 × 10^(8))

P_rad.ref = 4.8 × 10^(-8) Pa

B) Now, 1.013 × 10^(5) Pa = 1 atm

Thus, for the absorbed surface, we have;

P_rad.abs = (2.4 × 10^(-8))/(1.013 × 10^(5))

P_rad.abs = 2.369 × 10^(-13) atm

For the reflecting surface, we have;

P_rad_ref = (4.8 × 10^(-8))/(1.013 × 10^(5))

P_rad.ref = 4.738 × 10^(-13) atm

You might be interested in
I need an expert in physics for help
Elodia [21]
Whatcha need help with ????????
8 0
3 years ago
the resistance of a wire of length 80cm and of uniform area of cross-section 0.025cmsq., is found to be 1.50 ohm. Calculate spec
vivado [14]
Specific\ resistance\ =resistivity\\
From\ formula\ on \ resistance:\ R= \frac{pL}{A}\ p-resistivity,\ L-length,\\ A-area\ of\ cross\ section\\
p= \frac{R*A}{L}= \frac{1,5Ohm*0,025*10^{-4}m^2 }{80* 10^{-2}m }=0,0003515625 Ohm*m
3 0
3 years ago
Referring to the above diagram, how high will the ball rise on the right-hand incline?
Marina CMI [18]
I think it’s 15cm
Might be 7cm
3 0
3 years ago
Please help!!
Luba_88 [7]

Answer:

Bath CD jshchdhdhfhfhhfhd jpg de f for frr for gi Jhong GO by be jr jpg be

8 0
3 years ago
Read 2 more answers
Triton is a moon of Neptune. It has a
Mnenie [13.5K]

Answer:

<em>Well, Your answer will be is </em><em>840.96 mi. </em>

<em>Good Luck!</em>

^{Itsbrazts}

6 0
3 years ago
Other questions:
  • A 2.0-N force acts horizontally on a 10-N block that is initially at rest on a horizontal surface. The coefficient of static fri
    8·1 answer
  • A rigid rod of length L rotates about an axis perpendicular to the rod, with one end of the rod fixed to the axis. Which of the
    6·1 answer
  • A researcher is studying traffic patterns at an intersection before an upcoming construction project. As part of this investigat
    8·2 answers
  • A meterstick is initially standing vertically on the floor. If the meterstick falls over, with what angular velocity will it hit
    12·1 answer
  • What is electrical energy converted to inside a toaster?
    8·1 answer
  • 3. According to the article, why did Europeans so quickly accept that the sun did move and change?
    5·2 answers
  • WHAT SHOULD I NAME MY DEAD RAT?
    6·1 answer
  • Consider a horse pulling a buggy. Is the
    13·1 answer
  • . The penalties for a person's second DUI conviction include completion of __________ hours of DUI school.
    13·1 answer
  • The ability for a muscle to work against a resistance for an extended period of time is.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!