Which two circuits are exactly equivalent?
a.
A and B
b.
B and C
c.
C and D
d.
D and E
e.
B and E
e
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The celestial equator is
a. a line around the sky directly above Earth's equator. b. the dividing line between the north and south celestial hemispheres. c. the path that the Sun appears to follow on the celestial sphere as Earth orbits the Sun. d. a line around the sky directly above the Earth's equator and the dividing line between the north and south celestial hemispheres. e. a line around the sky directly above Earth's equator and the dividing line between the north and south celestial hemispheres.
All chemical and biological reactions involve the creation and breaking of chemical bonds, which are bonds between the electrons of one atom and the electrons of others
Given this fact, explain why the electromagnetic force governs all chemical and biological reactions. Also explain why the strong force, the weak force, and gravity play no role in these reactions.
In a carnival ride, passengers stand with their backs against the wall of a cylinder. The cylinder is set into rotation and the floor is lowered away from the passengers, but they remain stuck against the wall of the cylinder
For a cylinder with a 2.0-m radius, what is the minimum speed that the passengers can have so they do not fall if the coefficient of static friction between the passengers and the wall is 0.25? A) 8.9 m/s B) 2.3 m/s C) 3.0 m/s D) 4.9 m/s E) It depends on the mass of the passengers.
The momentum of an isolated system is conserved
A) only in inelastic collisions. B) only in elastic collisions. C) in both elastic and inelastic collisions.