Which type of wave forms at the boundary between air and water when you
2 answers:
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Answer:
0.88 cm
Explanation:
Initial length at 10°c, L = 23 m
Rise of temperature, Δt = 42 - 10 = 32°c
Coefficient of linear expansion of concrete, α = 12 x 10^(-6) per°c
Minimum spacing to be left = α L Δt
= 8.832 x 10^{-1} cm
= 0.88 cm
Note: I have a chosen a general value of 12 x 10^-6 per deg c for coefficient of expansion of concrete. However, please refer to the value given in your text book and substitute it for an accurate answer.
66.7 Watts
Explanation:
Let ohms,
ohms and
ohms. Since
and
are in parallel, their combined resistance
is given by
or
The total current flowing through the circuit <em>I</em> is given
where
Therefore, the total current through the circuit is
In order to find the voltage drop across the 6-ohm resistor, we first need to find the voltage drop across the 1-ohm resistor :
This means that voltage drop across the 6-ohm resistor is 20 V. The power dissipated <em>P</em> by the 6-ohm resitor is given by