Answer:
The wavelength is 
Explanation:
From the question we are told that
The frequency of operation of the microwave is 
Generally the wavelength is mathematically represented as
Here c is the speed of light with value 
So
=> 
converting to nanometer
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Answer:
45000 Kg.m/s
Explanation:
change in momentum = m( v¹-vi)
=3000(25-10)
= 45000
