How many stairs must woman climb to work off her breakfast

Assignment Help Physics

Reference no: EM13267512

A 65-kg woman cheats on her diet and eats a 612-Calorie (612 kcal) jelly doughnut for breakfast.

(a) How many joules of energy are the equivalent of one jelly doughnut?

_______ J

(b) How many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm.

_____ stairs

(c) If the human body is only 21% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfast?

______ stairs

Reference no: EM13267512

Questions Cloud

What will be its shortfall in cash for the month : For March, Heavenly Hotel will have cash receipts of $365,000 and cash disbursements of $370,000. If its beginning cash is $4,000 and its reserves are $3,000, what will be its shortfall in cash for the month?

Which asset have a greater annual straight-line depreciation : Asset B will have a useful life of 6 years and cost $1.3 million; it will have installation costs of $180,000 and a salvage or residual value of $300,000. Which asset will have a greater annual straight-line depreciation?

Determine tuning range and tuning ratio of local oscillator : The receiver is designed to receive transmitted signals between 5 MHz and 25 MHz. High-side tuning is to be used. Determine the tuning range and tuning ratio of the local oscillator if the IF frequency is 400 kHz and 2 MHz, respectively.

What is the payback period without discounting cash flows : The future after-tax cash inflows for years 1, 2, 3 and 4 are: $400,000, $300,000, $200,000 and $200,000, respectively. What is the payback period without discounting cash flows?

How many stairs must woman climb to work off her breakfast : A 65-kg woman cheats on her diet and eats a 612-Calorie (612 kcal) jelly doughnut for breakfast. If the human body is only 21% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakf..

Find which of the following strategies the most attractive : An investor who wants to exploit these price reversals would find which of the following strategies the most attractive?

Which rating would be used for a minimum safety margin : A certain type of power resistor comes in the following rating:3w,5w,8w,12w,20w. your particular application requires a resistor that can handle approximately 8w.

What is the gravitational force acting on the book : a 0.90 kg book rests on a table. A downward force of 3.5 N is exerted on the top of the book by a hand pushing down on the book. What is the gravitational force acting on the book

What is the current value of the future payments : Mrs. Crawford will receive $7,600 a year for the next 19 years from her trust. If a 14% interest rate is applied, what is the current value of the future payments?

User Account

All Pages