When plane is flying in tail wind condition we will have


Now during return journey we can say its would be head wind now

time = 2 + 1 = 2 hours

now add two equations

distance = 360 miles
now from above equation again

The cheetah can run 28,25 km
1) By looking at the table of the visible spectrum, we see that blue light has a wavelength in the range [450-490 nm], while red light has wavelength in the range [620-750 nm]. Therefore, red light has longer wavelength than blue light.
2) The frequency f of an electromagnetic wave is related to its wavelength

by the formula

where c is the speed of light. We see that the frequency is inversely proportional to the wavelength, so the shorter the wavelength, the greater the frequency. In this case, blue light has shorter wavelength than red light, so blue light has greater frequency than red light.
3) The energy of the photons of an electromagnetic wave is given by

where h is the Planck constant and f is the frequency. We see that the energy is directly proportional to the frequency, so the greater the frequency, the greater the energy. In this problem, blue light has greater frequency than red light, so blue light has also greater energy than red light.
Answer:
In a two particle system, the center of mass lies on the center of the line joining the two particles.
Sorry to say but I know that t(e introduction is first and the coda is last