Question

this is a series connected,I need answers for these questions​

Answer 1

Answer:

.it's take some time to solve

Explanation:

Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

Answer 2

Explanation:

1). 5A of current implies that a current of 5Ampere flows in the concerned branch of a circuit opposite to the direction considered. That's Physics 101 , in electrical engineering the '-' just shows that the current is moving in the opposite direction as to what was thought earlier..

2). Hence, current through R = 10/24 = 0.4166 = 0.42 A. b) Similarly for R = 48Ω. i=10/(48+12)=10/60=0.16A..

3). R-values can be calculated by dividing the thickness of a material (in metres) by its thermal conductivity (k-value or lambda value (λ) in W/mK). R-values are therefore expressed in m2K/W (or ft2·°F·hr/Btu in the USA)..

4). V-Value (V) or normalized frequency is the fundamental relationship between numerical aperture, cut-off wavelength and core radius in step-index fibers. By definition V=2.405 at the cut-off wavelength of every single-mode fiber waveguide. When the V-Value is greater than 2.405 the fiber will propagate multiple modes..

Hope its help..