A 20-?F capacitor is attached across a 1 000-V power supply. What is the net charge on the capacitor?
a. 10 mC
b. 20 mC
c. 40 mC
d. none of the above
d
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A) Internal human body temperature is often stated to be normal at 98.6°F. What is this temperature on the Celsius and Kelvin scales?
(b) Gallium boils at 2205°C. What is the corresponding temperature in the Fahrenheit and Kelvin scales? (c) The boiling point of liquid nitrogen is 77.0 K. What is the corresponding temperature in the Fahrenheit and Celsius scales? What will be an ideal response?
It is necessary to determine the specific heat of an unknown object. The mass of the object is measured to be 199.0 g. It is determined experimentally that it takes 16.0 J to raise the temperature 10.0°C. Find the specific heat of the object
A) 8.04 J/kg ? K B) 1600 J/kg ? K C) 0.00120 J/kg ? K D) 3.18 × 106 J/kg ? K
An airplane starts from rest and accelerates at a constant 10.8 m/s2. What is its speed at the end of a 400 m-long runway?
A) 4320 m/s B) 93.0 m/s C) 37.0 m/s D) 186 m/s E) 65.7 m/s
According to de Broglie, as the momentum of a moving particle is quartered, the corresponding wavelength changes by what factor?
a. 1/4 c. 16 b. 1/16 d. 4