What is the wavelength of an electron with a mass of 9.109×10−31 kg and a velocity of 3.43×107 ms? Use 6.626×10−34kg m2s for Planck's constant. Your answer should include three significant figures.

The wavelength of an electron is

Explanation:

To calculate the wavelength of a particle, we use the equation given by De-Broglie's wavelength, which is:

where,

= De-Broglie's wavelength = ?

h = Planck's constant =

m = mass of electron =

v = velocity of electron =

Putting values in above equation, we get:

Hence, the wavelength of an electron is

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.

d : a person who learns about the world by observing it. no that is not a smiley face

explanation: