In alpha decay, the difference in the atomic
number (Z) between the parent nucleus and the
daughter nucleus is
a) 1
b) 2
c) 3
d) 4
•
b
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Pressure: Calculate the pressure exerted on the ground due to the weight of a 79-kg person standing on one foot. if the bottom of the person's foot is 13 cm wide and 28 cm long.
A. 2.1 × 104 Pa B. 2.2 × 103 Pa C. 4.8 × 104 Pa D. 5.3 × 104 Pa
In what sense are telescopes "time machines" that allow us to study the formation and evolution of galaxies?
What will be an ideal response?
At what angle must a fish underwater look in order to see a fisherman at the shore? (Note: n for water is 1.33.)
A) 41.2° B) 48.8° C) 60.0° D) 36.9° E) 90.0°
The horizontal surface on which the objects slide is frictionless. If M = 2.0 kg, the tension in string 1 is 12 N. Determine F
a.
25 N
b.
20 N
c.
30 N
d.
35 N
e.
40 N