When we shopping for clothes what do customers often take items to the window to look at them

What is the coefficient of kinetic friction μk between the block and the tabletop?

You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?

Based on the image below what would an observer on the nighttime side of earth observe?