m=0.8 кг h=3 м η=0,55 (55%) Q=?
===
Q=En - A
En=m*g*h
η=A/En=1-Q/En
Q=(1-η)*En=(1-η)*m*g*h=(1-0.55)*0.8*10*3=10.8 Дж
m=0.8 кг h=3 м η=0,55 (55%) Q=?
===
Q=En - A
En=m*g*h
η=A/En=1-Q/En
Q=(1-η)*En=(1-η)*m*g*h=(1-0.55)*0.8*10*3=10.8 Дж