A distance of 1.0 x 103 separates the charge at the bottom of the cloud and the ground. The electric field intensity between the bottom of the cloud and the ground is 2..0 x 104 newtons per coulomb. What is the potential difference between the bottom of the cloud and the ground?
A. 1.4 x 104 V
B. 2.5 x 103 V
C. 2.8 x 106 V
*D. 2.0 x 107 V
When Adam drinks cold water, his body warms the water until thermal equilibrium is reached. If he drinks six glasses (2.5 kilograms) of water at 0 degrees Celsius in a day, approximately how much energy must his body expend to raise the temperature of this water to his body's temperature of 37 degrees Celsius?
A. 210 kJ
B. 305 kJ
*C. 390 kJ
D. 414 kJ
An electron is located between a pair of oppositely charged parallel plates. As the electron approaches the positively charged plate, the kinetic energy of the electron?
*A. Increases
B. Decreases
C. Remains the same
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