What is the frequency of yellow-green light that has a wavelength of 550 nm?
5.5 × 10^14 Hz
You might also like to view...
A football is thrown upward at some angle above the horizontal. If we neglect air friction, then we can conclude that the acceleration vector of the football is
A. zero. B. down. C. opposite to the velocity vector. D. along the direction of motion.
A convex spherical mirror with a radius of 50 cm has a 4.0 cm tall object placed 100 cm in front of it. What is the position of the image relative to the mirror?
A) 25 cm behind the mirror B) 20 cm behind the mirror C) 25 cm in front of the mirror D) 100 cm in front of the mirror E) 20 cm in front of the mirror
What is the average orbital speed of Earth around the Sun? (Note: r = 1.5 × 1011 m and P = 3.16 × 107 s.)
A. about 30 km/s B. about 4.7 km/s C. about 9.8 m/s2 D. 1,000 km/s E. 365 days
Consider a uniform hoop of radius R and mass M rolling without slipping. Which is larger, its translational kinetic energy or its rotational kinetic energy?
A) Translational kinetic energy is larger. B) Rotational kinetic energy is larger. C) Both are equal. D) You need to know the speed of the hoop to tell.