A circular current loop with radius r has a magnetic dipole moment ?. To gain the greatest increase in its magnitude, you could
1.double the radius and maintain the current.
2.double the radius and halve the current.
3.halve the radius and double the current.
4.double the current and maintain the radius.
1
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Indicate whether the statement is true or false
What is gravitational lensing? According to general relativity, why does it occur?
What will be an ideal response?
An artillery shell explodes in midair and breaks up into many fragments. Which of the following statements are true regarding conditions immediately before and immediately after the explosion: I
The total momentum of the fragments is equal to the original momentum of the shell. II. The total kinetic energy of the fragments is equal to the original kinetic energy of the shell. A) Statement I only B) Statement II only C) Both Statement I and Statement II D) Neither statement is true.
Where in Venus's atmosphere are sulfuric acid clouds found?
A. at very high altitudes B. everywhere in the atmosphere C. near the surface, like fog D. There are no sulfuric acid clouds on this planet.