The first to be credited with the idea that light is quantized was
A) Max Planck.
B) Albert Einstein.
C) both Planck and Einstein at about the same time.
Question 2
A box is sliding down an incline tilted at a 12.0 angle above horizontal.
The box is initially sliding down the incline at a speed of 1.50 m/s. The coefficient of kinetic friction between the box and the incline is 0.340. How far does the box slide down the incline before coming to rest?
A) 0.920 m
B) 2.33 m
C) 1.78 m
D) 0.720 m
E) The box does not stop. It accelerates down the plane.
How phytochrome acts as a molecular light switch.
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