The gravitational pull between Earth and venus is 831m
Answer: Corn Plant C
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The energy of a photon of light is directly proportional to its frequency and <span>inversely</span> proportional to its wavelength.
Answer:
Speed of the hawk, v = 40.4 m/s
Explanation:
It is given that,
Exact frequency of the female, f = 785 Hz
Observed frequency of female, f' = 890 Hz
Speed of sound, v = 343 m/s
Let v' is the speed of the hawk. It is based on the concept of Doppler's effect. We know that when the object approaches you, its speed is given by :


v' = 40.4 m/s
So, the speed of the hawk is 40.4 m/s. Hence, this is the required solution.