A baseball weighs 220 g. Top speed for a professional pitcher is about 100 mph when he throws a fast ball. Find the de Broglie wavelength (in nm) associated with a baseball that is moving with a velocity of 42 mph

is the de Broglie wavelength associated with a baseball that is moving with a velocity of 42 mph.

Explanation:

De-Broglie's wavelength, which is:

where,

= De-Broglie's wavelength = ?

h = Planck's constant =

m = mass of particle  =

v = velocity of the particle

We have :

Mass of baseball = m = 220 g = 0.220 kg ( 1g = 0.001 kg)

Velocity of the base ball = v = 42mph =

1 m/s = 2.237 mph

De-Broglie wavelength of the baseball at v:

=1.604\times 10^{-34} m=1.604\times 10^{-25} nm[/tex]

is the de Broglie wavelength associated with a baseball that is moving with a velocity of 42 mph.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.