How much a substance increase its temperature due to heat transfer depends on its specific heat.
The specific heat is the amount of heat required to increase the temperature of one mass of substance in 1 °Celsius.
The lower the specific heat the more the substance change its temperature with a given amount of heat, the greater the specific heat of the substance the lesser the change of temperature with the same amount of heat.
Then, to predict which of the two blocks will have the greater rise you need to compare the specific heats of the metals.
From tables, the specific heat of gold is 0.129 J/g°C and specific heat of iron is 0.450J/g*°C.
Then, gold will raise more its temperature than iron, after the addition of the same amount of heat.
Answer:
θ₄ = 37.2º
Explanation:
For this exercise it must be solved in two parts, the first part we look for the critical angle, for this we use the law of refraction with the angle in the middle of transmission of tea = 90º
n₁ sin θ₁= n₂ sin 90
θ₁ = sin⁻¹
θ₁ = sin⁻¹ (1.33 / 1.43)
θ₁ = 68.4º
They indicate that the angle of incidence is half of the critical angle
θ₃ = 68.4 / 2 = 34.2º
Let's use the law of refraction again
n₁ sin θ₃ = n₂ sin θ₄
sin θ₄ =
sin θ₃
sin θ₄ =
sin 34.2
θ₄ = sin⁻¹ 0.604345
θ₄ = 37.2º
Explanation:
Significant figures of a number written in positional notation are digits that carry meaningful contributions to the measurement resolution of the number.