A 150-W lightbulb emits of its energy as electromagnetic radiation. The bulb is at the center of a perfectly light absorbing sphere of radius 10.00 m. What is the radiation pressure on the sphere’s interior?
Electromagnetic radiation from a 5.00-mW laser is concentrated into a 1.00-mm2-area beam.
What is the radiation intensity of the beam?
What is the maximum electric force that the beam can exert on a 2.00-nC electric charge?
What is the maximum magnetic force that the beam can exert on a 2.00-nC charge that has a speed of 400 m/s?
Sunlight falls perpendicularly on a kite with a reflecting surface of area 0.75 m2. The average intensity of the sunlight is 900 W/m2.
What is the average force on the kite due to radiation pressure?
If the kite material is black and absorbs all sunlight, what is the average force on the kite due to radiation pressure?