State Kirchhoff's junction rule
What will be an ideal response?
At any junction point, the sum of all the currents entering the junction must equal the sum of all the currents leaving the junction.
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A brass rod with a length of 20.0 cm is placed side by side with an aluminum rod with a length of 20.0 cm and this system is placed between a hot temperature of 150
and a cold temperature of -10.0
The coefficient of thermal conductivities of the brass and the aluminum are 100 W/m 
and 230 W/m C respectively. The rods have the same cross sectional area of 20.0 cm2. What is the heat flow from the hot temperature to the cold temperature?
A. 683 W B. 528 W C. 52.8 W D. 68.3 W
A purpose statement is a formal written summary of reasons for publishing the website.
Answer the following statement true (T) or false (F)
A torque of 12 N ? m is applied to a solid, uniform disk of radius 0.50 m, causing the disk to accelerate at What is the mass of the disk?
A) 17 kg B) 13 kg C) 8.5 kg D) 4.3 kg
All of the following observations are real. Which one does not support the model in which active galactic nuclei are powered by accretion disks around massive black holes?
A) The most luminous active galactic nuclei have huge redshifts. B) X-ray emission from active galactic nuclei can vary significantly in times as short as a few days. C) The total luminosity of an active galactic nucleus can be as high as about 10 billion times that of the Sun. D) Spectra of active galactic nuclei show that clouds of gas are orbiting a central object at a high speed.