The overflow of gasoline from a car's full metal tank on a hot day is evidence that gasoline expands
A) more than metal.
B) about the same as metal.
C) less than metal.
D) none of the above.
Answer: A
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First Law of Thermodynamics: In an isochoric process, the internal (thermal) energy of a gas decreases by 50 J. How much work is done by the gas during this process?
A. 0 J B. 50 J C. -50 J D. 25 J E. -25 J
If the relative mass of a hydrogen atom is 1/4 that of a helium atom, how many hydrogen atoms would you need to equal the mass of four helium atoms?
A) 16 B) 4 C) 1/4 D) 25 E) 6.022 × 1023
Faraday's Law: As shown in the figure, a uniform magnetic field B is confined to a cylindrical volume of radius 0.050 m. This field is directed into the plane of the page and is increasing at a constant rate of 0.900 T/s. Calculate the magnitude and direction (clockwise or counterclockwise) of the current induced in a circular wire ring of radius 0.16 m and resistance 7.1 ? that encircles the magnetic field region.
What will be an ideal response?
A radioactive isotope that emits an alpha particle will change in what respect?
a. Atomic number decreases by four. b. Both choices a and b are valid. c. Mass number decreases by four. d. None of these choices are valid.