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    HI, im stuck on these two questions:
    1. calculate the current drawn from the mains electricity supply by the drill. I got given that the power supply is 230 V,power input is 1012W and that the mass is 6kg so what equation do i use?
    2. Technetium-99 us used by the doctors as a medical tracer. In hospitals, it is produced inside a technetium generator by the decay of a molybdenum-99 nuclei.
    Figure 7 shows how the number of nuclei in a sample of molybdenum-99 changes with time as the nuclei decay.

    A technetium generator will continue to produce sufficient technetium-99 until 80 percent of the original molybdenum nuclei have decayed.
    After how many days will a source of molybdenum-99 inside a technetium-99 generator need replacing?
    Number of days = ...........
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    (Original post by Chelsea12345)
    HI, im stuck on these two questions:
    1. calculate the current drawn from the mains electricity supply by the drill. I got given that the power supply is 230 V,power input is 1012W and that the mass is 6kg so what equation do i use?
    2. Technetium-99 us used by the doctors as a medical tracer. In hospitals, it is produced inside a technetium generator by the decay of a molybdenum-99 nuclei.
    Figure 7 shows how the number of nuclei in a sample of molybdenum-99 changes with time as the nuclei decay.

    A technetium generator will continue to produce sufficient technetium-99 until 80 percent of the original molybdenum nuclei have decayed.
    After how many days will a source of molybdenum-99 inside a technetium-99 generator need replacing?
    Number of days = ...........
    Hi Chelsea. You need to post the whole question exactly as stated and include any diagrams. Without a context to the extracts you posted, we can only make assumptions and assumptions are a cardinal sin in physics!

    Thanks.
 
 
 
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