Question

Физика 7 класс,электрические розетки прессуют из специальной массы баркалитовой действуя на нее с силой 37.5 кн Площадь разеткии 0,0075м2 под каким давления прессуют разетки

Answer 1

p=F/S

p=37500/0.0075=5000000 Па=5 МПа

Answer 2

Electric sockets press from a special mass of barcalite with a force of 37.5 kN, and the socket area is 0.0075 m². What pressure do the sockets press with?

To find the pressure exerted by the electric sockets, we can use the formula:

Pressure = Force / Area

Given that the force exerted by the sockets is 37.5 kN and the area of the socket is 0.0075 m², we can substitute these values into the formula to find the pressure.

Pressure = 37.5 kN / 0.0075 m²

To calculate this, we need to convert the force from kilonewtons (kN) to newtons (N) since the unit of pressure is pascals (Pa), which is equivalent to N/m².

1 kilonewton (kN) = 1000 newtons (N)

Therefore, the force exerted by the sockets is:

37.5 kN = 37.5 * 1000 N = 37500 N

Now we can calculate the pressure:

Pressure = 37500 N / 0.0075 m²

Calculating this, we find that the pressure exerted by the sockets is:

Pressure = 5,000,000 Pa

Therefore, the sockets press with a pressure of 5,000,000 pascals (Pa) or 5 megapascals (MPa).

Please note that barcalite is not a commonly known material, and I couldn't find specific information about its properties or use in electric sockets. It's possible that the term "barcalite" may refer to a specific brand or type of material used in a particular context.