Aray diagram for a refracted light ray is shown. what does the dashed line represent? medium boundary normal incident ray

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Should we celebrate the voyages of zheng he mini q answer key