Question

Дано:m=50 грамм, t2-t1=20°, Q=400Дж найти C​

Answer 1

Решение:

Q=cmΔt

c=Q/mΔt=400/0,05×20=400 Дж/кгК

Answer 2

To find the specific heat capacity (C) of the substance, we can use the formula for heat:

Q = m * C * ΔT

Where: Q = Heat energy (in joules) m = Mass of the substance (in grams) C = Specific heat capacity (in joules per gram per degree Celsius, J/g°C) ΔT = Change in temperature (in degrees Celsius)

Given: m = 50 grams ΔT = t2 - t1 = 20°C Q = 400 joules

Let's rearrange the formula to solve for C:

C = Q / (m * ΔT)

Now, substitute the given values:

C = 400 J / (50 g * 20°C)

First, convert the mass to kilograms:

m = 50 g ÷ 1000 (to convert to kilograms) = 0.05 kg

Now, calculate C:

C = 400 J / (0.05 kg * 20°C)

C = 400 J / (0.05 kg * 20)

C = 400 J / 1

C = 400 J/g°C

Therefore, the specific heat capacity (C) of the substance is 400 joules per gram per degree Celsius (J/g°C).