I'll give Branliest to the most efficient and first answer.

1. What major change in our thinking about the path of a moving electron had to be made with the advent of quantum theory?

2. Calculate the wavelength of a space shuttle with a mass of 2.05 x 107kg traveling at a rate of 7.85 x 103 m/s.

1) With the advent of the quantum theory came the idea that the path of a moving electron can not be exactly determined. We can only talk about the probability of finding the electron within a given region in space.

2) Using the De Broglie's relation;

λ = h/mv

Where;

λ = wavelength

h = Plank's constant

m = mass

v = velocity

λ = 6.6 * 10^-34/2.05 x 10^7 * 7.85 x 10^3

λ = 4.1 * 10^-25 m

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I'll give Branliest to the most efficient and first answer. 1. What major change in our thinking about the path of a moving electron had to be made with the advent of quantum theory?2. Calculate the wavelength of a space shuttle with a mass of 2.05 x 107kg traveling at a rate of 7.85 x 103 m/s. ​

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I'll give Branliest to the most efficient and first answer.

1. What major change in our thinking about the path of a moving electron had to be made with the advent of quantum theory?

2. Calculate the wavelength of a space shuttle with a mass of 2.05 x 107kg traveling at a rate of 7.85 x 103 m/s.