If a 1 kg mass is completely converted into energy, the amount of energy released would be __________
Fill in the blank(s) with correct word
9 × 10^16 J
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Which of the following has the longer wavelength?
A) a low-energy electron B) a high-energy electron C) both the same D) none of the above
The cylindrical filament in a light bulb has a diameter of 0.050 mm, an emissivity of 1.0, and a temperature of 3000°C. How long should the filament be in order to radiate 60 W of power? (? = 5.67 × 10-8 W/m2 ? K4 )
A) 7.2 cm B) 8.6 cm C) 9.4 cm D) 5.9 cm E) 11 cm
How many joules of energy are required to accelerate a 1.0-kg mass from rest to a speed of 86.6% the speed of light? (c = 3.00 × 108 m/s)
A) 2.7 × 1012 J B) 3.0 × 103 J C) 4.5 × 109 J D) 1.8 × 1017 J E) 9.0 × 1016 J
Suppose that you wish to construct a simple AC generator with an output of 12. V maximum when rotated at 60. Hz. A magnetic field of 0.050 T is available. If the area of the rotating coil is 100. cm2, how many turns are needed?
What will be an ideal response?