A patient receives absorbed dose of radiation 300mGy from an alpha emitting radionuclide radium 223, into breast tissue this emits 300mSv The patient at the same time receives a dose (300mGy) from strontium 89 of beta emitter Calculate effective dose?

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Suzana Arefin

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Im passionate about teaching Science and Maths!

I have 6 years of experience working as a tutor. I provide one-to-one and group tuitions on a range of subjects.

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Sayeed Ahmed

Online lessons

Friendly, experienced tutor, committed to improving your grades.

Sayeed is a Physical Natural Sciences undergraduate at the University of Cambridge. Having studied Physics, Mathematics, Chemistry and Materials Sciences in his first years at university, he is currently specialised in Chemistry with a focus on physical and theoretical fields. Sayeed has completed two summer research internships in nano-chemistry and techno-economic modelling. Brought up in the UK, Sayeed achieved an excellent set of grades for A-Levels (4xA*) and GCSEs (1x9, 2x8, 7xA*, 1xA). His success can be attributed to proper understanding of course content and effective revision techniques. This informs Sayeed’s teaching style of guiding his students through new material by engaging their curiosity and intuition. In this way, students take a personal approach to their learning, rather than relying on rote memorisation. Outside of his studies, Sayeed has taken an active role in several student societies including Access, Welfare, and Charity Officer at the Cambridge University Islamic Society; and Treasurer at the Cambridge University Bangla Society. Sayeed has also taken intermediate-level French and Arabic courses at university and abroad, respectively. His hobbies include hiking and travelling.

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Poli H

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Supportive tutor to get you the best grades in maths & physics

Currently in my final year of studying Physics at KCL.

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Yutaro Yamamoto

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Details pending.

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Ian Bailey

DBSOnline lessons

Friendly, supportive and dynamic, experienced tutor, ready to support you!

Teaching is my passion. For the last ten years I have been a university teacher, and have experience in tutoring science subjects at all levels. My background is in Biochemistry, but have experience in teaching chemistry, biology and physics at all levels. I strongly believe in the individual. I am kind, approachable and patient and focus on building the trust and confidence which will allow the students to flourish.