Speed = Distance / Time
Given:
Distance = 1500 meters
Time = 4.00 minutes =4*60=240 seconds
Speed = 1500 / 240 = 6.25 m/s
Thus, the man's speed is 6.25 meters per second.

To calculate the speed of the man in meters per second, we need to convert the time from minutes to seconds and then divide the distance by the time.

Given:
Distance = 1500 meters
Time = 4.00 minutes

1 minute is equal to 60 seconds. So, we have:
Time = 4.00 minutes × 60 seconds/minute
Time = 240 seconds

Now, we can calculate the speed:
Speed = Distance / Time
Speed = 1500 meters / 240 seconds

Speed 6.25 meters/second

Therefore, the speed of the man is approximately 6.25 meters per second.

Given:
Distance = 13 km
Time = 2.0 hours
Formula:
Speed = Distance ÷ Time
Calculation:
Speed = 13 ÷ 2.0
Speed = 6.5 km/h
Answer:
The woman's speed is 6.5 km/h

The index of refraction is determined by comparing the speed of light in a vacuum to the speed of light in the medium.

-. Reflection: Reflection occurs when a wave bounces off a surface, like light reflecting off a mirror.
- Refraction: Refraction happens when a wave changes direction as it passes from one medium to another, such as light bending in water.
- Diffraction: Diffraction is when a wave bends around obstacles or spreads out through openings, like sound traveling around a corner.
- Absorption: Absorption occurs when a wave’s energy is taken in by a material, such as sunlight being absorbed by a dark surface.