The total number of protons and neutrons in the nucleus of an tom is referred to as its
A) atomic mass number
B) average atomic mass
C) proton number
D) atomic number
A
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The Quarternary is a(n)
a. epoch. b. era. c. eon. d. period.
If we know an object is moving at constant velocity, we may assume:
a. the net force acting on the object is zero. c. the object is accelerating. b. there are no forces acting on the object. d. the object is losing mass.
A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in the figure. The vertical height above ground level at position A is 200 m. Neglect friction
(a) What is the total mechanical energy of the roller coaster at point A? (b) What is the total mechanical energy of the roller coaster at point B? (c) What is the speed of the roller coaster at point B? (d) What is the speed of the roller coaster at point C? What will be an ideal response?
The lift on an airplane wing is an application of
A) Bernoulli's principle. B) Pascal's principle. C) Archimedes' principle. D) Poiseuille's equation. E) Torricelli's equation.