Answer:
The answer is D
Explanation:
Animals add color to their environment so a mate can see how creative the animal is.
Answer:
No photoelectric effect is observed for Mercury.
Explanation:
From E= hf
h= Plank's constant
f= frequency of incident light
Threshold Frequency of mercury= 435×10^3/ 6.6×10^-34 × 6.02×10^23
f= 11×10^14 Hz
The highest frequency of visible light is 7.5×10^14. This is clearly less than the threshold frequency of mercury hence no electron is emitted from the mercury surface
Answer:
sorry please can you snap the diagram ...the question is not clear to my understanding
For the first one the answer is B. and the second one is D.
Pacific plate and the North American plate
