The average mass of an automobile in the United States is about 1.440 x 10% g. The mass of a mosquito is 10 mg. The mass of an electron is 9.109 x 10-31 kg. Use order-of-magnitude calculations to estimate how many times more massive
both a mosquito and an automobile are when compared to an electron.

wavelength variability is the right one

b.

hope this : )

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west