Answer:
See description
Explanation:
With the given information we have:

the interval is ![[0,\pi ]](https://tex.z-dn.net/?f=%5B0%2C%5Cpi%20%5D)
now the mass
has the given expression:

we will use the formula for a line integral and let:

therefore we have:

we solve the integral:

Answer:
Explanation:
The speed of light is 300,000,000 m/s. Shat is the frequency of microwaves with a wavelength of 0.01 meter
Let
be the speed of the helicopter in still air. Let
be the speed of the wind. Then, from the given information,

Adding the above 2 equations,

The speed of the helicopter in still air 