Question

Какую силу надо приложить ,чтобы удержать под водой кусок цинка массой 142 кг​

Answer 1

Ответ:

200н

Объяснение:

архимедова сила = 10 н /кг * плотность жидкости* объем тела

находим объем тела нужно массу разделить на плотность цинка ( 7100кг м3)

142кг :7100кг м3 =0,02 м3

и находим архимедова силу =10*1000*0,02=200н

Answer 2

Calculating the Force Required to Hold a 142 kg Zinc Block Underwater

To calculate the force required to hold a 142 kg zinc block underwater, we can use the formula for buoyancy force, which is equal to the weight of the fluid displaced by the object. The buoyant force can be calculated using the formula:

Buoyant force = weight of the fluid displaced

The weight of the fluid displaced is equal to the weight of the zinc block, which is 142 kg, multiplied by the acceleration due to gravity (approximately 9.81 m/s^2).

Therefore, the force required to hold the 142 kg zinc block underwater is equal to the weight of the fluid displaced, which can be calculated using the formula:

Force = mass of the zinc block * acceleration due to gravity

Substituting the values, we get:

Force = 142 kg * 9.81 m/s^2

Calculating the force:

Force = 1390.02 N

So, the force required to hold a 142 kg zinc block underwater is approximately 1390.02 Newtons.