A 1000-turn toroidal solenoid has a central radius of 4.2 cm and is carrying a current of 1.7 A. What is the magnitude of the magnetic field inside the solenoid at the central radius? (?0 = 4? × 10-7 T • m/
A)
A) 8.1 mT
B) 51 mT
C) 16 mT
D) 81 mT
E) zero
A
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The Copernican model of the solar system has the planets orbit the sun along elliptical paths
Indicate whether the statement is true or false
The atmosphere of Titan is composed mostly of:
A) oxygen. B) methane. C) carbon dioxide. D) hydrogen. E) nitrogen.
In a spaceship that accelerates at g far from gravitational influences, with the effort it takes on Earth to do 20 pushups, you could comfortably do
A) less than 20 pushups. B) 20 pushups. C) more than 20 pushups.
The boiling point of 1,4-butanediol is 230°C. Would you expect this compound to be soluble or insoluble in room-temperature water?
A) Since there are no polar areas on this molecule, it is insoluble in water at room temperature. B) A high boiling point means that the substance interacts with itself quite strongly. Therefore this molecule is not soluble in water. C) Since there are polar areas on this molecule, it is insoluble in water at room temperature. D) Water would be attracted to both ends of 1,4 butanediol, and it is infinitely soluble in water.