The densities of cork, lead, and water are 0.240, 11.34, and 0.997 g/cm3 at 25°c, respectively. if 20.0 grams of lead are placed inside an 85.0 cm3 piece of cork, what is the overall density and will it float on water?

overall density = 0.475 g/cm³
Conclusion: if will float on water

Explanation:

1) name the variables:

masa = m
volume = v
density = d

2) Formula

d = m / v ⇒ m = v × d ⇒ v = m / d

3) Solution

i) Calculate the mass of the cork

V cork = 85.0 cm³ ⇒ m = 85.0 cm³ × 0.240 g / cm³ = 20.4 g

ii) Mass of lead + cork

m = 20.0 g + 20.4 g = 40.4 g

iii) Volume of the cork and lead

Assume that, since the lead is inside the cork, the total volume is the same volume of the cork: 85.0 cm³ (any how the contribution of the lead to the volumen is so small that it does not affect the results).

iv) Calculate the overall density

d = 40.4 g / 85.0cm³ = 0.475 g/cm³

4) Conclusion:

Since the overall density  is less than the density of water, the object will float.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

Simple harmonic motion wind energy circulation best answer from the choices