A particle (q = +5.0 ?C) is released from rest when it is 2.0 m from a charged particle which is held at rest. After the positively charged particle has moved 1.0 m toward the fixed particle, it has a kinetic energy of 50 mJ. What is the charge on the fixed particle?
a. ?2.2 ?C
b. +6.7 ?C
c. ?2.7 ?C
d. +8.0 ?C
e. ?1.1 ?C
a
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Water (density = 1.00 × 10^3 kg/m3) flows at 7.2 m/s through a pipe with radius 0.025 m. The pipe goes up to the second floor of the building, 2.00 m higher, and the pressure remains unchanged. What is the radius of the pipe on the second floor?
a. 0.019 m b. 0.036 m c. 0.0013 m d. 0.23 m e. 0.022 m
It was because the health effects of the Three Mile Island accident in 1979 were so severe that it caused general public alarm
What will be an ideal response?
The atmosphere of ____________ contains mostly nitrogen with some methane
a. Jupiter b. Earth's Moon c. Callisto d. Titan e. Miranda
A certain amount of a monatomic gas is maintained at constant volume as it is cooled by 50 K. This feat is accomplished by removing 400 J of energy from the gas. How much work is done by the gas?
A) zero B) 200 J C) 400 J D) -400 J E) none of the above