An object is solid throughout. when the object is completely submerged in ethyl alcohol, its apparent weight is 16.5 n. when completely submerged in water, its apparent weight is 13.3 n. what is the volume of the object?

V = 1.7 x 10^{-3} m^{3}

Explanation:

apparent weight in ethyl alcohol = 16.5 N

apparent weight in water = 13.3 N

apparent weight = mg - ρgV

where

m = mass

g = acceleration due to gravity = 9.8 m/s^{2}

ρ = density

V = volume

    we can solve the two equations above as simultaneous equations by subtracting equation 2 from equation 1

we have

16.5 - 13.3 = (mg - mg) - ρ₁gV - (-ρ₂gV)

3.2 = gV(ρ₂ - ρ₁)

V = \frac{3.2}{g(ρ₂-ρ₁)}

where

ρ₂ = density of water = 1000 kg/m^{3}

ρ₁ = density of ethyl alcohol = 806 kg/m^{3}

V = \frac{3.2}{9.8(1000 - 806)}

V = 1.7 x 10^{-3} m^{3}

the independent variable, or the one that is intentionally manipulated is the speed.

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete