An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466 . If a ray of light is incident on the air-to-oil surface at an angle of 40.0° with the normal, what is the incident angle at the oil-to-water surface?
a. 24.2°
c. 26.0°
b. 37.0°
d. 18.1°
C
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A 4.00 kg object is moving at 5.00 m/s NORTHWEST. It strikes a 6.00 kg that is moving SOUTHWEST at 2.00 m/s. The objects have a completely inelastic (stick together) collision. The velocity of the 6.00 kg object after the collision is
A. 2.33 m/s at an angle of 45.0 degrees NORTH of WEST. B. 3.89 m/s at an angle of 35.0 degrees NORTH of WEST. C. 3.89 m/s at an angle of 14.0 degrees NORTH of WEST. D. 2.33 m/s at an angle of 14.0 degrees NORTH of WEST. E. 2.33 m/s at an angle of 35.0 degrees NORTH of WEST.
In choosing between sound waves and radio waves, which has the greater speed?
A) sound wave B) radio wave C) both the same D) need more information
To explain retrograde motion as well as changes in planetary brightness, Ptolemy's model used ________
Fill in the blank(s) with correct word
Red light with a wavelength of 650. nm travels from air into a liquid with an index of 1.33. What is the frequency and wavelength in the liquid?
What will be an ideal response?