Astudent measured the density of gold to be 20.4 g/cm3. the accepted value of the density of gold is 19.3 g/cm3. what is the percent error of the student's measurement?
a. 6.09%
b. 0.70%
c. 5.70%
d. 1.35%

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.