Author Question: A small sphere with a mass of 441 g is moving upward along the vertical +y-axis when it encounters ... (Read 38 times)

audragclark · **on:** Jul 29, 2018

A small sphere with a mass of 441 g is moving upward along the vertical +y-axis when it encounters an electric field of 5.00 N/C .

If, due to this field, the sphere suddenly acquires a horizontal acceleration of 13.0 m/s2 , what is the charge that it carries?
A) 1.15 C
B) -1.15 C
C) 1150 C
D) -1150 C

Question 2

Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnitude of the magnetic field midway between the two wires? (0 = 4 10-7 T m/A)

A) 2.0 10-5 T
B) 4.0 10-5 T
C) 1.0 10-5 T
D) 3.0 10-5 T
E) 5.0 10-5 T