Answer:
Black t shirt
Explanation:
It absorbs more heat than the white shirt
Explanation:
Below is an attachment containing the solution.
Answer:
a correct
Explanation:
a hypothesis is a supposition made of a basis of limited evidence
Answer:
H1 = 63.3 kJ
Explanation:
Given:
ΔL = 2.256 kJ/g
Cp = 4190J/kg⋅K
Steam at 100°C in contact with your skin, condenses to water at 100°C. Therefore,
Q = M × ΔL
= (25.0 g)(2.256 kJ/g)
= 56.4 kJ
This condensed water at 100°C is then cooled to 34°C. The heat involved with this temperature change is;
Q = m × Cp × ΔT
= (25 × 1kg/1000g × 4190 × (100°C - 34°C)
= 6913.5 J
= 6.914 kJ
The total heat H1,
= (56.4 kJ) + (6.9135 kJ)
= 63.3 kJ.
Answer:
The critical angle is ![\theta _c = 62.57^o](https://tex.z-dn.net/?f=%5Ctheta%20%20_c%20%20%3D%20%2062.57%5Eo)
Explanation:
From the question we are told that
The index of refraction of the glass in the fiber is ![n_f = 1.69](https://tex.z-dn.net/?f=n_f%20%20%3D%20%201.69)
The index of refraction of the glass in the cladding is ![n_c = 1.50](https://tex.z-dn.net/?f=n_c%20%20%3D%20%201.50)
The critical angle is mathematically evaluated as
![\theta_c = sin^{-1}[\frac{n_c }{n_f } ]](https://tex.z-dn.net/?f=%5Ctheta_c%20%20%3D%20%20sin%5E%7B-1%7D%5B%5Cfrac%7Bn_c%20%7D%7Bn_f%20%7D%20%5D)
substituting values
![\theta _c = 62.57^o](https://tex.z-dn.net/?f=%5Ctheta%20%20_c%20%20%3D%20%2062.57%5Eo)