Be sure to answer all parts. compare the wavelengths of an electron (mass = 9.11 × 10−31 kg) and a proton (mass = 1.67 × 10−27 kg), each having (a) a speed of 6.66 × 106 m/s and (b) a kinetic energy of 1.71 × 10−15 j.

Explanation:

Given that,

(a) Speed,

Mass of the electron,

Mass of the proton,

The wavelength of the electron is given by :

The wavelength of the proton is given by :

(b) Kinetic energy,

The relation between the kinetic energy and the wavelength is given by :

Hence, this is the required solution.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.