Ahighway patrol officer uses a device that measures the speed of vehicles by bouncing radar off them and measuring the doppler shift. the outgoing radar has a frequency of 100 ghz and the returning echo has a frequency 15.0 khz higher. what is the velocity of the vehicle? note that there are two doppler shifts in echoes. be certain not to round off until the end of the problem, because the effect is small.

Explanation:

The data we are given is:

V = ?     fo = 100GHz        fs = 100000015KHz    C = 343m/s

With the doppler effect formula we can calculate the frequency perceived by the vehicle as:

    (1)

Then, we sound waves bounce back on the vehicle:

     (2)   Replacing tha value obtained in (1)

  Solving for V:

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

because if the tool that you are using is not balanced it there would be false mass.