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Question
How is it possible for an element to decay "forward in the periodic table"that is, to decay to an element of higher atomic number?A) When the decay is instigated by a collision with a proton.
B) As a beta particle is released, a neutron transforms into a proton.
C) This only occurs during nuclear fusion.
D) It is not possible. Radioactive decay always results in an isotope with the same or lower atomic number.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Heat energy is measured in units of
A) degrees.
B) joules.
C) calories.
D) both joules and calories.
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When the temperature of a fixed volume of air initially at 0 C is lowered by 1 degree, its pressure
A) decreases by 1/273.
B) decreases by 100/273.
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D) increases by 100/273.
Q:
Which of these is the smallest?
A) 1 Celsius degree
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B) potential energy.
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Distinguish between the concepts of thermal energy, temperature, and heat.
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A) surface of bodies of water.
B) layer of water slightly below the surface.
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Water at 4C will expand when it is slightly
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If water at 0C slightly increases in temperature, the water
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If water at 20C slightly increases in temperature, the water
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Q:
A kg of 40C water and a kg of 20C water, after being mixed, have a temperature of 30C. However, the final temperature of a 1-kg iron block at 40C placed into 1 kg of water at 20C is
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A) becomes more ordered.
B) becomes less ordered.
C) reaches equilibrium.
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When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
C) remains unchanged.
Q:
Which law of thermodynamics addresses the direction of heat flow?
A) First law
B) Second law
C) Third law
D) all of the above
Q:
Which law of thermodynamics states that no system can reach absolute zero?
A) First law
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Q:
At some point between Earth and the Moon, the forces due to gravity on a space traveler would be the same when this point is
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A) less the gravitational force between them.
B) more the gravitational force between them.
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Q:
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A) one-quarter.
B) half as much.
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D) four times as much.
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If Earth's mass somehow decreased with no change in its radius, your weight would
A) decrease also.
B) increase.
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Q:
Newton discovered
A) gravity.
B) that gravity is universal.
C) neither of these
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B) rise and fall back to Earth's surface.
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E) none of the above