Radiation pressure Definition and 63 Threads

Hi folks, first time poster. I'm a math undergrad taking my final physics3 requirement. I'm doing ok in the class, but about 2 out of 8 of the homework problems confound me. I removed the numbers below and replaced them with variables (does that matter on this site?). Mostly I'm interested...

b]1. Homework Statement [/b] Estimate the radiation pressure due to a 75 Watt bulb at a distance of 8 cm from the center of the bulb. Homework Equations S=(E x B) , P = S/c The Attempt at a Solution I'm not sure were to start. How can I determine the value of E from a 75 Watt bulb.

Hi, When radiation pressure exerts a force on an object causing it to move, where does the object's kinetic energy come from, and how? E.g. consider a perfectly reflecting solid block in vacuum. Its face is illuminated by light. From conservation of momentum, the reflection of the light...

Hey! When a photon is reflected off an interface doesn't it deliver some of it's momentum to the object that it hits due to radiation pressure? If so, shouldn't the reflected light have a longer wavelength (smaller wavenumber) than the incident light? Is this effect present, but just so small...

Pressure = energy flux / speed of light Taking an energy flux of 1000 watts per meter sq (typical flux of sunlight on Earth's surface) We gain, pressure = 1,000/300,000,000 = 1/300,000 Pascals. If it is reflected, we gain twice that = 2/300,000 pascals Now my question, if I had two...

Q: Near the Earth the flux of the EM energy from the sun is ~ 1.4 kW/m2. If an interplanetary sailplane has a sail of mass 1g/m2 and negligible other weight, what would be its acceleration due to solar radiation pressure? Help! I am a stuck on this. However, I have a few thoughts: We know...

Hello! First time on this site, so I hope I do this right. I have a homework question that I could use some help on: (From Physics for Scientists and Engineers, Third Ed. Fishbane, Gasiorowicz, Thornton) Chapter 34 #39. Suppose that you want to use the radiation pressure from a beam of...

How do scientists counteract the radiation pressure of sunlight falling on artifical satellites for e.g. on solar panels? Do they use rockets or is the orbit self-correcting?

Ok, i got a problem that reads as followed. Suppose that a perfectly reflecting circular mirror is initially at rest a distance R away from the sun and is oriented so that the solar radiation is incident upon, and perpendicular to, the plane of the mirror. What is the critical value of...

Knowing that a 10 watt light source is used to illuminate a 1m(squared) area of glass surface with n=1.5 orthogonal to it's surface, how can i find the radiation pressure?

Formula for solar radiation pressure I'm looking for a formula that gives the amount of force in Newtons that is produced from the pressure of solar radiation. I've googled it and found: F_R = C_R \frac{I}{c}S where I is the radiation intensity, c is the speed of light, and S is the...

A plane electromagnetic wave of intensity 6.00 W/m2 strikes a small pocket mirror, of area 30.0 cm2, held perpendicular to the approaching wave. (a) What momentum does the wave transfer to the mirror each second? kg · m/s Ok, well for a perfect reflector, the formula is given as total...

I'm working on a project that involves 'acoustic radiation pressure'.. This means that an acoustic wave can exert a net force on some object, along it's propagation-direction.. if the object was a plate, it would look somewhat like this: ...... | ----||--wave--> |->Force...