What is the distance on the screen from the center of the central maximum to the point where the intensity has fallen to i0/2?

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

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

What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus