A 1.0 kg object moving at 4.5 m/s has a wavelength of:

A) 1.5 * 10-34 m

B) 2.9 * 10-33 m

C) 7.4 * 10-35 m

D) 1.4 * 10-34 m

E) 2.9 * 10-34 m

Question

Bentley Clements

Physics

18 April, 13:38

A 1.0 kg object moving at 4.5 m/s has a wavelength of:

A) 1.5 * 10-34 m

B) 2.9 * 10-33 m

C) 7.4 * 10-35 m

D) 1.4 * 10-34 m

E) 2.9 * 10-34 m

+3

Answers (1)

Know the Answer?

Sarai Jenkins · Answer 1

By wave particle duality.

Wavelength, λ = h / mv

where h = Planck's constant = 6.63 * 10⁻³⁴ Js, m = mass in kg, v = velocity in m/s.

m = 1kg, v = 4.5 m/s

λ = h / mv

λ = (6.63 * 10⁻³⁴) / (1*4.5)

λ ≈ 1.473 * 10⁻³⁴ m

Option D.

A 1.0 kg object moving at 4.5 m/s has a wavelength of:A) 1.5 * 10-34 mB) 2.9 * 10-33 mC) 7.4 * 10-35 mD) 1.4 * 10-34 mE) 2.9 * 10-34 m

A 1.0 kg object moving at 4.5 m/s has a wavelength of:

A) 1.5 * 10-34 m

B) 2.9 * 10-33 m

C) 7.4 * 10-35 m

D) 1.4 * 10-34 m

E) 2.9 * 10-34 m