Answer:
(b) 7.2 mJ
Explanation:
ENERGY STORED IN CAPACITOR: the energy is stored in capacitor in electric field
which can be calculated by expressions
E= c
=
=7200× J
= 7.2× J
=7.2 mJ
A transmission line with an imperfect dielectric is connected to an ideal time-invariant voltage generator. The other end of the
1 answer:
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Answer Explanation:
the efficiency of the the engine is given by=1-
where T₂= lower temperature
T₁= Higher temperature
we have given efficiency =70%
lower temperature T₂=27°C=273+27=300K
higher temperature T₁=627°C=273+627=900K
efficiency=1-
=1-
=1-0.3333
=0.6666
=66%
66% is less than 70% so so inventor claim is wrong
Answer:
Tension in cable BE= 196.2 N
Reactions A and D both are 73.575 N
Explanation:
The free body diagram is as attached sketch. At equilibrium, sum of forces along y axis will be 0 hence
hence
Therefore, tension in the cable,
Taking moments about point A, with clockwise moments as positive while anticlockwise moments as negative then
Similarly,
Therefore, both reactions at A and D are 73.575 N
