The most easily visible supernova remnant is the _______________ Nebula
Fill in the blank(s) with correct word
Crab
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What is the resistance of a wire made of a material with a resistivity of 3.2 × 10^-8 W × m if its length is 2.5 m and its diameter is 0.50 mm?
a. 0.16 W b. 0.10 W c. 1.28 W d. 0.41 W e. 0.81 W
Work Done by a Gas: A gas expands at constant temperature from an initial volume of 0.040 m3 and an initial pressure of 210 kPa until its pressure drops to 135 kPa. How much work is done by the gas during this expansion? (R = 8.31 J/mol ? K)
A. 3.0 kJ B. 3.7 kJ C. 4.1 kJ D. 5.6 kJ E. 7.9 kJ
A parallel-plate capacitor has a capacitance of 10 mF and charged with a 20-V power supply. The power supply is then removed and a dielectric material of dielectric constant 4.0 is used to fill the space between the plates
How much energy is now stored by the capacitor? A) 250 mJ B) 125 mJ C) 500 mJ D) 62.5 mJ E) 1200 mJ
The hotter an object, the more blue it appears
Indicate whether the statement is true or false