Question

кит.плавая под водой со скоростью 18 км в час развивает мощность 150 кВт. определите силу опоры воды

Answer 1

мощность

N=A/t=FS/t=Fv
F=N/v
18км/ч=(18*1000):3600=5м/с
F=150000:5=30000Н

Answer 2

Calculation of Water Resistance Force

To determine the water resistance force, we need to use the formula:

Water Resistance Force = 0.5 * ρ * A * Cd * V^2

Where: - ρ is the density of water - A is the frontal area of the object moving through the water - Cd is the drag coefficient of the object - V is the velocity of the object

Given that the speed of the object is 18 km/h (or 5 m/s) and the power developed is 150 kW, we can calculate the water resistance force.

However, the search results did not provide specific information about the frontal area or the drag coefficient of the object. Without this information, it is not possible to calculate the water resistance force accurately.

Please provide additional information about the frontal area and the drag coefficient of the object so that we can calculate the water resistance force accurately.