A helicopter flies 250 km on a straight path in a direction 60° south of east. The east component of the helicopter’s displacement is

What’s #16 asking me and how do i solve it?

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?

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?