If the magnetic field from a current-carrying long straight wire has a magnitude at a distance d, what is the magnitude of the field at a distance 2d?

A. also

B. 0.707

C. 0.693

D./2

E. /4


D./2

Physics & Space Science

You might also like to view...

Two important properties of young neutron stars are:

A) extremely slow rotation and a strong magnetic field. B) extremely rapid rotation and a weak magnetic field. C) extremely rapid rotation and a strong magnetic field. D) no rotation and a weak magnetic field. E) no rotation and no magnetic field.

Physics & Space Science

The average speed of light is greatest in

A) red glass. B) orange glass. C) green glass. D) blue glass. E) same in all of these

Physics & Space Science

The exchange of mediating photons can produce

a. neither a repulsive nor an attractive force. b. either a repulsive or an attractive force. c. a repulsive force. d. an attractive force.

Physics & Space Science

A 7.00-kg mass is placed on a 28.0° incline and friction keeps it from sliding. The coefficient of static friction in this case is 0.574, and the coefficient of sliding friction is 0.528 . What is the frictional force in this situation?

a. 32.2 N b. 60.6 N c. 32.0 N d. 34.8 N e. 3.29 N

Physics & Space Science