EM waves tend to be scattered the most by an object that is
A. conducting.
B. about the same size as the wave.
C. magnetic.
D. reflective.
E. a liquid.
Answer: B
You might also like to view...
A change in the direction of a wave when the wave finds an obstacle or an edge.
a) Refraction b) Standing wave c) Reflection d) Diffraction
Star A has twice the absolute temperature of star B, but they both have the same radius. What is the ratio of star A’s power output to star B’s output due to electromagnetic radiation? The emissivity of both stars can be assumed to be 1
1.4 2.8 3.16 4.64
A kid slides down an icy (frictionless) hill starting from rest. At the top his gravitational potential energy is 500 J. He slides part way down the hill to a point where his gravitational potential energy is 200 J. His kinetic energy at that point will be
a. 200 J b. 300 J c. some unknown value between 0 and 500 J d. none of the above
It is unrealistic to expect to succeed at a randomized controlled trial that requires people to alter their behavior over a significant period of time.
a. true b. false