Check sibling questions

The power of a heart which beats 72 times in a minute is 1.2kW. Calculate the work done by heart for each beat.

Slide7.JPG

Slide8.JPG

Introducing your new favourite teacher - Teachoo Black, at only β‚Ή83 per month


Transcript

Extra Questions 4 The power of a heart which beats 72 times in a minute is 1.2kW. Calculate the work done by heart for each beat. Power of the heart = 1.2 kW = 1.2 Γ— 1000 W = 1200 W Time taken = 1 minute = 60 seconds We know that Power = (π‘Šπ‘œπ‘Ÿπ‘˜ π‘‘π‘œπ‘›π‘’)/(π‘‡π‘–π‘šπ‘’ π‘‘π‘Žπ‘˜π‘’π‘›) Work done = Power Γ— Time = 1200 Γ— 60 = 72000 J Now, Work done to beat 72 times = 72000 J Work done to beat 1 times = 72000/72 = 1000 J = 1000/1000 kJ = 1 kJ Work done to produce 1 heart beat is 1 kJ

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo