Answer: false
Explanation:
While kilograms are the unit used to measure body mass, the device used is a scale.
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Answer
Explanation:
radiaton is used from bombs but radiation and to cure cancer it is a toxic gas that if you smell it you can die
Frequency = how many waves you get per sec
Period = how long each wave takes
Period = 1/frequency
Answer:
The distance of the second dark band away from the central bright spot be located is 
Explanation:
Given that,
Wave length = 500 nm
Radius 
Distance from the hair sample D= 6 m
We need to calculate the distance of the second dark band away from the central bright spot be located


Using formula for dark fringe

Put the value into the formula




Hence, The distance of the second dark band away from the central bright spot be located is 