salt water has a density of 1030 kg/m^3. a piece of wood with mass of 1260 g is a cuboid with dimensions 7 cm x 10 cm x 15 cm. Will it float in water? a) Work out the volume of the wood b) Work out the density of the wood

No, the piece of Wood will not follow.

a) Volume = 0.00105 m³

b) Density of Wood = 1200 kg/m³

Step-by-step explanation:

For the piece of wood to float on salt water, the density of the wood should be less than 1030kg/m³

First we'll calculate the volume of the piece of wood, which later we'll use to find the density.

Volume is given by 7 cm × 10 cm × 15 cm

Convert all the values into meters.

7 cm = 7/100 = 0.07 m

10 cm = 10/100 = 0.10 m

15 cm = 15/100 = 0.15 m

Calculate Volume:

Volume = 0.07 m × 0.1 m × 0.15 m

Volume = 0.00105 m³

Formula for density is given by

Density = Mass / Volume

Where

Volume = 0.00105 m³

Mass =  1260 g = 1260/100 = 1.260 kg

Density = 1.260 kg/0.00105 m³

Density of Wood = 1200 kg/m³

As Density of Wood ≥ Density of Salt water , the piece of Wood will not float.

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: