Which of these colors of light has photons of lowest energy?
a. Yellow
b. Green
c. Blue
d. Violet
a
You might also like to view...
A student weighing 200 N climbed a flight of stairs 9.0 m high in 4 s. How much work was done by the student?
a. 1800 J b. 800 J c. 1800 W d. 800 W e. 50 W
Recall that Hubble's law is written v = H0d, where v is the recession velocity of a galaxy located a distance d away from us, and H0 is Hubble's constant. Suppose H0 = 22 km/s/million light-years. How fast would a galaxy 1000 million light-years away be receding from us?
A) 22 km/s B) 22 million light-years/s C) 22,000 km/s D) 1000/22 km/s E) 0.22 times the speed of light
The strong forces of attraction that exist between water molecules and are responsible for many of its unique properties as a solvent are called
A) dispersion forces B) ionic bonds C) hydrogen bonds D) covalent bonds
The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. A racecar goes around a 200 m radius curve at a constant speed of 40 m/s. Its acceleration is
a. 0 d. 8 m/s2 b. 0.2 m/s2 e. 16 m/s2 c. 4 m/s2