Why
do you think humans have evolved with non-slit non-nocturnal optical
equipment?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.