A. The switch within the closed circuit is opened.
If the switch is opened current will stop flowing, as the current will meet a gap, that is not connected by a conductor.
Answer:
1) Total internal reflection
2) Snell's law
Explanation:
As already mentioned in the question, on way of determining the refractive index is to use the idea of total internal reflection. In that case, we measure the critical angle. This is than angle of incidence in the material, for which the angle of refraction is 90°.
n=1/sinC
Alternatively, we could use Snell's law. In this case, we measure the angles of incidence and refraction.
Refractive index= sini/sinr
1134000J
Use the formula for kinetic energy K= 1/2*m*v^2
K=(1120*45^2)/2=1134000 Joule
Answer:
Heating 100 g of water from 10◦C to 50◦C
Explanation:
m₁ ΔT₁ = 2000
m₂ ΔT₂ = 300
m₃ ΔT₃ = 4000
m₄ ΔT₄ = 70
Answer:
Gravity always pulls the ball toward the center of earth (the ground).
Explanation: