Suppose earth is a soid sphere which will attract the body towards its centre.So, acc. to law of gravitation force on the body will be,
F=G*m1m2/R^2
but we now that F=ma
and here accleration(a)=accleration due to gravity(g),so
force applied by earth on will also be mg
replace above F in formula by mg and solve,
F=G*mE*m/R^2 ( here mE is mass of earth and m is mass of body)
mg=G*mEm/R^2
so,
g =G*mE/R^2
The speedometer on your vehicle indicates the c. instantaneous speed of your car. It shows “your speed at a particular instant in time.”
Answer: D) All of the above
Explanation: Matter waves are examples of wave particle duality. Matter waves, reflect, refract, diffract, and interfere just like light or water waves. Matter waves have amplitudes, wave speeds, wavelengths, and frequencies.