Question

Решите пожалуйста задачи!

Answer 1

1) Ek/5 = Q

Ek = mV²/2

Q = cmΔt

mV²/10 = cmΔt

V²/10 = cΔt

Δt = V² / 10*c = 160000 / 10 * 130 ~ 123 °C

2) Ek*52/100 = Q

Ek = mV²/2

Q = cmΔt

mV²*52/200 = cmΔt

V²*52/200 = cΔt

Δt = V² * 52 / 200*c = 10000 * 52 / 200 * 130 = 20 °C

3) E/2 = Q

E = Eп = m₁gh

Q = cm₂Δt

m₁gh/2 = cm₂Δt

Δt = m₁gh/m₂c*2 = 2000 * 10 * 3 / 1 * 130 * 2 ~ 230.7 °C