A galvanometer has a coil with a resistance of 24. ?. A current of 180. ?A causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for 10.0 A, what shunt resistor is required?
What will be an ideal response?
0.432 m?
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The age of the Milky Way galaxy has been estimated to be at least 13 billion years based on
a. observations of globular clusters. b. observations of open clusters. c. 21-cm radiation from H I regions. d. the rotation curve of the galaxy. e. the energy produced by Sagittarius A.
Molar Specific Heats: If we add 700 J of heat to 12 moles of an ideal monatomic gas at constant volume, what will be the change in temperature of the gas? (R = 8.31 J/mol ? K)
A. 4.7 K B. 5.2 K C. 5.8 J D. 6.8 K E. 9.3 K
Why are sunsets and sunrises red?
A) The Sun emits more red light when it's near the horizon. B) Sunlight must pass through more atmosphere to reach our eyes at those times, so more blue light is scattered away. C) Sunlight must pass through more atmosphere to reach our eyes at those times, which means it passes through a larger volume of red air molecules. D) The lower temperatures of morning and evening (compared to midday) make the sky redder in color.
Gas and dust distributed among the stars is known as the _______________
a. interstellar vacuum b. interstellar void c. Oort cloud d. interstellar medium