Answer:
nuclear energy.............
Answer:
Explanation:
Using the formula for refraction at curved surface
For refraction at first surface
μ₂ /v -μ₁ /u = ( μ₂ - μ₁ )/R
1.5/v -1/-45 =.5/14
v = 111 cm
For refraction at opposite surface ,
u ( object distance ) = 111 - 28 =83 cm
It will act as virtual object for surface 2 so it will be positive in sign
again using the above equation for 2 nd surface we have
1/v - 1.5/83.17 = -.5-=/-14 = 1/28
v = 18.62 cm from second face.
yes, virtual image will be formed.
Answer:
n = 1.7*10²² electrons.
Explanation:
- As the current, by definition, is the rate of change of charge, assuming that the current was flowing at a steady rate of .151 A during the 5 hours, we can find the total charge that passed perpendicular to the cross-section of the circuit, as follows:
⇒ Δq = I * Δt = 0.151 A * 18000 s = 2718 C
- As this charge is carried by electrons, we can express this value as the product of the elementary charge e (charge of a single electron) times the number of electrons flowing during that time, as follows:
Δq = n*e