A radiometer has two square vanes (1.0 cm by 1.0 cm), attached to a light horizontal cross arm, and pivoted about a vertical axis through the center, as shown in the figure. The center of each vane is 6.0 cm from the axis.
One vane is silvered and it reflects all radiant energy incident upon it. The other vane is blackened and it absorbs all incident radiant energy. An electromagnetic wave with an intensity of 0.30 kW/m2 is incident normally upon the vanes. What is the radiation pressure on the blackened vane? (c = 3.00 108 m/s,
0 = 4 10-7 T m/A, 0 = 8.85 10-12 C2/N m2)
A) 1.0 10-10 Pa
B) 1.0 10-9 Pa
C) 1.0 10-8 Pa
D) 1.0 10-7 Pa
E) 1.0 10-6 Pa
Question 2
A radiometer has two square vanes (1.0 cm by 1.0 cm), attached to a light horizontal cross arm, and pivoted about a vertical axis through the center, as shown in the figure.
The center of each vane is 6.0 cm from the axis. One vane is silvered and it reflects all radiant energy incident upon it. The other vane is blackened and it absorbs all incident radiant energy. An electromagnetic wave with an intensity of 0.30 kW/m2 is incident normally upon the vanes. What is the torque due to radiation pressure on the vane assembly about the vertical axis?
(c = 3.00 108 m/s, 0 = 4 10-7 T m/A, 0 = 8.85 10-12 C2/N m2)
A) 2.4 10-12 N m
B) 6.0 10-12 N m
C) 1.2 10-11 N m
D) 1.8 10-11 N m
E) 2.4 10-11 N m
Blue light is scattered more than other wavelengths by the gases in the atmosphere, giving the Earth
Supernova Light Curves
Subcutaneous drug administration: (a) cross section of skin showing depth of needle insertion;
A cross section of a typical wax-actuated thermostat showing the position of the wax pellet and ...
Using a vacuum hose and a test light to ground one cylinder at a time on a distributorless ignition ...
Results of a cross involving two genes located on the same chromosome