Question

Дано: h=12 m p=2600 кг/m3 V=0,4 m3 t=20c g=9,8 H/кг N - ?

Answer 1

Ответ:$N=6115,2$Вт.

Решение:

$N=\frac{A}{t}$;                           |

$p=\frac{m}{V}$⇒$m=pV$;            |

$A=Fs$; $A=Fh$             |⇒ $N=\frac{pVgh}{t}$ ;$N=\frac{2600*0,4*9,8*12}{20}= 6115,2$Вт

$F=F_{T} =mg$(равн. дв.)|

Answer 2

Calculating the Value of H/kg

To calculate the value of H/kg, we can use the formula:

H = h + m + p + V + t + g + N

Given: - h = 12 - m = ? - p = 2600 kg/m3 - V = 0.4 m3 - t = 20 s - g = 9.8 m/s2 - N = ?

We need to find the values of m and N to calculate H.

Calculating the Value of m

To find the value of m, we can use the given information and the formula:

p = m/V

Given: - p = 2600 kg/m3 - V = 0.4 m3

We can rearrange the formula to solve for m:

m = p * V

Substitute the given values:

m = 2600 kg/m3 * 0.4 m3 m = 1040 kg

So, the value of m is 1040 kg.

Calculating the Value of N

To find the value of N, we can use the formula:

N = m * (g + a)

Given: - m = 1040 kg - g = 9.8 m/s2 - a = ?

We need the value of a to calculate N. Unfortunately, the value of a is not provided in the given information or search results. Therefore, we are unable to calculate the value of N without the value of a.

Conclusion

Based on the given information and available formulas, we were able to calculate the value of m as 1040 kg. However, we were unable to calculate the value of N without the value of a. If you have the value of a, please provide it, and we can proceed with calculating the value of N.