Answer:
The source of light and the phenomenon of reflection are responsible for an object to be seen
Explanation:
Answer:
The minimum number of 100 Ω resistors that i need to design an effective resistor with 275Ω resistance are 8 resistors.
Explanation:
(2 Resistors of 100Ω in parallel) in <u>series with</u> (4 resistors of 100Ω in parallel) in <u>series</u> with 2 resistors of 100Ω.
2 resistors in parallel of 100Ω = 50Ω
+
4 resistors in parallel of 100Ω = 25Ω
+
2 resistors in series of 100 2Ω = 200Ω
=
275Ω
Answer:
0.1m
Explanation:
k = 64N/m
Ep = 0.32J
x = ?
Ep = 1/2 * kx²
make x the subject of the formula
x² = 2Ep/k
x = √(2Ep/k)
x = √(0.64/64)
x = √0.01
x = 0.1m
Answer:
λ = 649 nm
Explanation:
given,
frequency,f = 4.62 x 10¹⁴ Hz
speed of light,c = 3 x 10⁸ m/s
we know,
c = f λ
![\lambda=\dfrac{3\times 10^8}{4.62\times 10^{14}}](https://tex.z-dn.net/?f=%5Clambda%3D%5Cdfrac%7B3%5Ctimes%2010%5E8%7D%7B4.62%5Ctimes%2010%5E%7B14%7D%7D)
λ = 6.4935 x 10⁻⁷ m
λ = 649 x 10⁻⁹ m
λ = 649 nm
the wavelength of this light is equal to 649 nm
Answer: Primary coil
A Step-down transformer is an electrical device which is used to decrease the voltage using magnetic induction. The windings of the primary coil are more than the windings of the secondary coils. h1, h2 notations are used to refer to primary coils. On the other hand, x1, x2 notations are used to refer to the secondary coils of the transformer. In case of step-up transformer, the windings of primary coil are less than the secondary in order to increase the voltage.