HELP!! You walk 130 m E and then turn and walk another 43m [E 28 degree S] what is the total displacement?

Total displacement 155 m

Explanation:

From the question, the formula to apply will be that of cosine rule where:

where

a= 43 m , b=130m and c =? , <C=28° + 90° =118°

Substituting values in the equation as;

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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