Renee is on spring break and pulling her 21-kg suitcase through the airport at a constant speed of 0.47 m/s. she pulls on the strap with 120 n of force at an angle of 38° above the horizontal. determine the normal force and the total resistance force (friction and air resistance) experienced by the suitcase.

This problem can be directly solved by drawing the free body diagram (see attached photo)

The normal force = 131.92N and the total resistance force = 94.56N because the suitcase is not accelerating (acceleration = 0) so the total forces must balance, hence we can say that the resistance force is equal to the horizontal component of her pulling force.

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)