physics

posted by .

(a) calculate the number of kilocalories needed to climb 232 stair steps (116 steps per minute for 2 min.)

*climbing stairs (116/min.) = energy consumption rate is 9.8 (kcal/min) *
(b) calculate the gain in gravitational potential energy for a 50-kg person if each step 0.18m high and compare your result with the answer to part (a). explain why the energy found in part (a) is larger than that found in part (b)

come on guys, help please? i need this asap :(
thank you so much !

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, …
  2. physics

    you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 80 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what …
  3. Kinesology

    A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat?
  4. Science

    A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat?
  5. health

    i was completing my study guide so i can study and i ran across these questions and needed help?
  6. Chemistry

    Calculate the rate constant, k, for the reaction 2H2O2(l) --> 2H2O(l) + O2(g) Using the rate, - 0.02 mol/L.min H2O2, and the initial concentration, [H2O2] = 0.5 mol/L Question 7 options: - 25/min 25/min - 0.04/min 0.04/min
  7. physics

    calculate the number of kilocalories needed to climb 232 stair steps (116 steps per minute for 2 min.) climbing stairs (116/min.) = energy consumption rate is 9.8 (kcal/min)
  8. Anatomy

    I have the formula to problem but can not come up with any of the answers. Problem: Calculate the cardiac output if heart rate (HR) is 90 beats per minute, stroke volume (SV) is 110 ml/beat, end diastolic volume (EDV) is 140 ml, and …
  9. Science/Anatomy

    I have the formula to the problem but am unsure of my answer.. Problem: Calculate the cardiac output if heart rate (HR) is 90 beats per minute, stroke volume (SV) is 110 ml/beat, end diastolic volume (EDV) is 140 ml, and end systolic …
  10. Chemistry

    In the gas-phase reaction given below, the [I2] changes from 0.400 M at 0.00 min to 0.200 M at 3.00 min. I2 + Cl2 --> 2 ICl Calculate the average reaction rate in moles I2 consumed per liter per minute. mol/(LĀ·min)

More Similar Questions