a. You've recently read about a chemical laser that generates a 20.0-cm-diameter, 27.0 MW laser beam. One day, after physics class, you start to wonder if you could use the radiation pressure from this laser beam to launch small payloads into orbit. To see if this might be feasible, you do a quick calculation of the acceleration of a 20.0-cm-diameter, 107 kg, perfectly absorbing block.What speed would such a block have if pushed horizontally 103 m along a frictionless track by such a laser?
b. Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 40.0 ∘ from vertical, and that of the third is horizontal.What light intensity emerges from the third filter?
a)
Radiation pressure is given by
PR=I/c =P/Ac =(27*106)/(pi*0.22/4)(3*108)=2.8648 N/m2
Force
F=PRA =2.8648*(pi*0.22/4)=0.09 N
acceleration
a=F/m =0.09/107=8.4*10-4m/s2
Speed of the block is
V=sqrt[2ad]=sqrt[2*8.4*10-4*103]
V=0.416 m/s
b)
The light intensity emerges from the third filter is
I3=(Io/2)Cos240Cos2(90-40)
I3=0.12123Io
a. You've recently read about a chemical laser that generates a 20.0-cm-diameter, 27.0 MW laser beam....
You've recently read about a chemical laser that generates a 20-cm-diameter, 27.0 MW laser beam. One day, after physics class, you start to wonder if you could use the radiation pressure from this laser beam to launch small payloads into orbit. To see if this might be feasible, you do a quick calculation of the acceleration of a 20-cm-diameter, 92.0 kg,perfectly absorbing block. What speed would such a block have if pushed horizontally 110 m along a frictionless track by...
Problem 34.56 Part A You've recently read about a chemical laser that generates a 20.0-cm- What speed would such a block have if pushed horizontally 96.0 m along a frictionless track by such a laser? Express your answer with the appropriate units. diameter, 22.0 MW laser beam. One day, after physics class, you start to wonder if you could use the radiation pressure from this laser beam to launch small payloads into orbit. To see if this might be feasible,...
The diagram below shows a beam of light shining through three linear polarizers in a row. The polarizing axis of each polarizer is measured at an angle (ϴ1,ϴ2,ϴ3) from vertical. Suppose that the original beam of light emanates from a vertically polarized laser. The laser has a power output of 1 mW and the beam has a diameter of 2 mm. What is the intensity of the laser beam before it travels through any polarizers? Calculate the final intensity of...