Final answer:
The student's question pertains to the safe distance from microwave radiation leakage from a radar unit, requiring calculation using the power emitted and safe intensity level. An example of leakage radiation safety limit is 0.1 mR/h for X-ray devices, which may vary for other equipment.
Step-by-step explanation:
The student's question refers to safe exposure levels to radiation, specifically concerning microwaves from a radar unit. Given that the maximum safe intensity of microwaves for human exposure is 1.00 W/m², we can calculate the distance required to achieve this safe exposure level assuming the radar unit leaks 10.0 W of microwaves uniformly in all directions.
The power spreads uniformly over the surface area of a sphere (4πr²), and by setting the intensity to 1.00 W/m² and solving for r, we can find the safe distance. To address the question of what the maximum electric field strength at the safe intensity is, we would need to apply the relationship between intensity and electric field in electromagnetic waves, which is I = ½ εₙ c E², where εₙ is the permittivity of free space, c is the speed of light, and E is the electric field strength.
As for the protection against leakage radiation, the regulation standards are industry-specific, but as a reference, leakage radiation should not exceed 0.1 mR/h (milliroentgen per hour) at 1 meter from the source for diagnostic X-ray equipment as per FDA regulations. However, this limit can vary for different types of equipment and in different countries.
For example, in the case of microwave leakage from a radar unit, the distance and corresponding electric field strength are calculated based on the given power leakage and the maximum safe intensity, to ensure that personnel working around such equipment are not exposed to harmful levels of radiation.