What is the wavelength of a 2500 kg truck traveling at a rate of 75km/h?

Given data

mass of truck (m) = 2500 Kg ,

speed of truck (v) = 75 Km/h ,

                             = 75 × (5/18) m/s  

                                 (since 1Km = 1000 meters and 1hr = 3600 seconds)

                             = 20.83 m/s

Determine the wavelength (λ) =?

We know that,

              wave length (λ) = h/mv

                         where, h = plank's constant, it is a physical constant

                                        = 6.626 × 10⁻³⁴ J-s

                                      m = mass of the object in kg

                                       v = velocity/speed of the object in m/s

     Now, substituting  all the values in the equation of wave length

                                       λ = 6.626 × 10⁻³⁴ /(2500 × 20.83)

                                          =  1.2723 × 10⁻³⁸ m

Wave length of the truck is  1.2723 × 10⁻³⁸ m

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

all eukaryotic cell have mitochondria : )