Physics 1029A/B Lecture 7: January 22

A rectangular loop of 260 turns is 22 cm wide and 16 cm high. What is the current in this loop if the maximum torque in a field of .48 T is 23 N m?

graphically determine the resultant of three vector displacements:1) 34 m, 25 degrees north of east; 2) 48 m, 33 degrees east ofnorth; and 3) 22 m, 56 degrees west of south.

i know i'm supposed to add the components of each vector, but istill can't get the answer, which i know is 58 m, 48 degrees.

A block is suspended by a rope from the ceiling of a car. Whenthecar rounds a 45 m radius horizontal curve at 22 m/s (about 50mph),what angle does the rope make with the vertical?
a. 0
b. 25 deg.
c. 48 deg.
d. 65 deg.
e 90 deg.
please explain answer
thanks :)