Problem 20.01 Part A What is the magnitude of the force per meter of length on a straight wire carrying an 7.00-A current when perpendicular to a 0.85-T uniform magnetic field? Express your answer to two significant figures and include the appropriate units. HA F Value Units Submit Request Answer Part B What if the angle between the wire and field is 31.0 ? Express your answer to two significant figures and include the appropriate units. UA ? Value Units Submit Request AnswerProblem 20.11 ( 2 c I Review | Q v Part A Alpha particles (charge q = +28, mass _ 727 6 m _ 6'6 X 10 kg) move at 1.8x10 m/s ' What magnetic field strength would be required to bend them into a circular path of radius 7' = 0.15 m '? Express your answer using two significant figures. \"\"90-7 B=| T m muest Answer Problem 20.12 Part A Find the direction of the force on a negative charge for each diagram shown in the figure, where v (green) is the diagram (a) velocity of the charge and B (blue) is the direction of the magnetic field. (@ means the vector points inward. O means it points outward, toward you.) (Figure 1) O left O right O upward O downward O inward into the screen outward to the screen no force Submit Request Answer Part B diagram (b) O left O right O upward downward Figure O downward B B O inward into the screen B O outward to the screen (a) (b) (c no force B (e) (f) Submit Request AnswerPart E Find the direction of the force on a negative charge for each diagram shown in the figure, where v (green) is the velocity of the charge and B (blue) is the direction of the diagram (e) magnetic field. (@ means the vector points inward. O means it points outward, toward you.) (Figure 1) O left right O upward O downward O inward into the screen O outward to the screen no force Submit Request Answer Part F diagram (f) O left O right O upward Figure O downward