An atom with 19 protons and 18 neutrons is a(n) A. Isotope of argon (Ar)
B. Standard atom of (K)
C. Standard atom of agron (Ar)
D. Isotope of potassium (K)

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel