Question

Convert one atmosperic pressure ( 10 power 5 Nm power -2) into dyne cm -2

Answer 1

1atm pressure into dyne cm-²

1atm = 10^5Nm-²

10^5 Nm-² = ? dyne cm-²

First of all,

Nm-² = kgms-²m-² => kgm-¹s-²

dynecm-² = gcms-²cm-² => gcm-¹s-²

Now,

10^5kgm-¹s-² =? gcm-¹s-²

n1 = n2(M2/M1) (L2/L1) (T2/T1)

n1 = 10^5 $( \frac{kg}{g})( \frac{m}{cm} ) {}^{ - 1} ( \frac{s}{s} ) {}^{ - 2}$

n1 = 10^5 $( \frac{1000g}{g})( \frac{100cm}{cm} ) {}^{ - 1} ( \frac{s}{s} ) { }^{ - 2}$

n1 = 10^5 ×1000×1/100 ×1

n1 = 10^6

So,

1 atm pressure = 10^6 dynecm-²

Cheers!