Question

Высота надводной части лодки-плоскодонки равнялась 20 см. К днищу лодки со стороны воды по всей его площади приклеили пенопласт плотностью 400 кг/м^3 и толщиной 5 см. Определить высоту надводной части лодки, после наклеивания пенопласта.

Answer 1

смотри решение на листочке.

Answer 2

Calculation of the Height of the Boat's Above-Water Section

To determine the height of the boat's above-water section after attaching the foam plastic, we need to consider the initial height of the boat's above-water section and the thickness of the foam plastic added.

Given: - Initial height of the boat's above-water section: 20 cm - Density of the foam plastic: 400 kg/m^3 - Thickness of the foam plastic: 5 cm

To calculate the height of the above-water section after attaching the foam plastic, we can subtract the thickness of the foam plastic from the initial height of the above-water section.

Calculation: Height of the above-water section after attaching the foam plastic = Initial height of the above-water section - Thickness of the foam plastic

Height of the above-water section after attaching the foam plastic = 20 cm - 5 cm = 15 cm

Therefore, the height of the above-water section of the boat after attaching the foam plastic is 15 cm.

Please note that the provided search results did not contain specific information related to the calculation.