Answer:
transition metal, and inner transition metals groups are numbered 1-18 from left to right
Answer:48.52 kJ
Explanation:
Given
Resistance
temperature increases from
Voltage=50 V
Heat given(H)
Where V=voltage applied
t=time
R=Resistance

Heat absorbed by water is

where
m=mass of water
c=specific heat of water
=change in temperature

Therefore 90-41.48=48.52 kJ is not absorbed by water and leaves the system into the surroundings.
Answer:
1.414
Explanation:
Snell's law states:
n₁ sin θ₁ = n₂ sin θ₂
where n is the index of refraction and θ is the angle of incidence (relative to the normal).
The index of refraction of air is approximately 1. So:
1 sin 45° = n sin 30°
n = sin 45° / sin 30°
n = 1.414
Round as needed.