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.
Answer:
Atmospheric pressure is the pressure exerted by the weight of the atmosphere.
Atmospheric Pressure = density of Mercury X acceleration due to gravity X height of column of the mercury
Answer:
13.5
Explanation:
Mass: 5kg
Initial Velocity: -15
Final Velocity: 12
Force: 10
We can use the equation: Vf = Vi + at
We need to find acceleration, and we can use the equation, F=ma,
We have mass and the force so it would look like this, 10=5a, and 5 times 2 would equal 10, so acceleration would be 2.
Now we have all the variables to find time.
Back to Vf = Vi + at, plug the numbers in, 12 = -15 + 2(t)
Plugging them in into desmos gives 13.5 for time.
<span> is the volume of fluid which passes per unit time; usually represented by the symbol Q (sometimes V̇).</span>
As you go from Radio waves across to Gamma eats : Wavelength decreases and frequency and energy increase.
