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How much power must the legs of a 70-kg man develop in order to run up a staircase 5 m high in 9 seconds?
Work = (force) x (distance) = (mass) x (gravity) x (height) = (70 x 9.8 x 5)
Power = work / time = (70 x 9.8 x 5) / (9) = 3811/9 watts = about 0.51 horsepower.
Actually, that's the rate at which his gravitational potential energy increases
as his altitude increases, but in order to accomplish it, he has to generate
and expend energy significantly faster than that.
What else can I help you with?
What is the power of 50 joules in 5 seconds?
Power = energy/time = 50/5 = 10 watts
During a storm an apartment building lost power for 2.6 hours. For how many seconds was the power out?
9060 sec. (Apex)
How long is one quadrillion seconds?
A quadrillion is 10 to the 15th power. This is illustrated even more when you convert that to years (in seconds, not days). 1 year = 365 days. 365 days is 31,536,000 seconds (60 seconds * 60 minutes * 24 days * 365 days). 10 to the 15th power divided by 31,536,000 seconds = 31709791.983764585 years. Rounded up that is 31,709,792 years.
How much power is needed to lift the 200-n object to a height of 4m in 4 seconds?
Power = (energy) / (time) =(200 newtons x 4 meters) / (4 seconds) =200 newton-meters per second = 200 watts
What is Convert 2.05x10 to the 5 power seconds into years?
6.50 x 10^3 years
A power mower does 9.00 times 105 J of work in 0.0500h. what power does it develop?
You need to convert the time to seconds. Then, if you divide the work (in joules) by the time (in seconds), you will get the power in watts.
How much power must the legs of a 70-kg man develop in order to run up a staircase 5 m high in 9 s?
The power required by the legs of the man can be calculated using the formula: Power = Work / Time. The work done in lifting the man up the stairs is equal to the gravitational potential energy gained, which is equal to mgh. So, Power = (70 kg) * (9.81 m/s^2) * (5 m) / 9 s. Solving this gives an approximate power of 385 Watts.
How much power is generated by the staircase in one step?
The amount of power generated by a person stepping on a staircase is very small, usually in the milliwatt range. This is because the energy generated from one step is insufficient to produce a significant amount of power. Multiple steps or users would be needed to generate more usable power.
What powered the first reliable staircase?
Staircases require no power, they just stand there and you climb up or down them.
How long should you run your boats power ventilation system in order to eliminate fuel vapors in the bilge?
You should run your boats power ventilation for 30 seconds at least in order to eliminate fuel vapors in the bilge.
Does Saudi Arabia develop Photovoltaic Solar Power?
Yes, Saudi Arabia does develop Photovoltaic Solar Power.
How much power is necessary to do 60 joules of work in 20 seconds?
The power required to do 60 joules of work in 20 seconds is determined by the formula: Power = Work / Time. Therefore, Power = 60 joules / 20 seconds = 3 watts. So, 3 watts of power is necessary to do 60 joules of work in 20 seconds.
Which power of a telescope might be expressed as 0.5 seconds or arc?
which power of a telescope might be expressed as "0.5 seconds of arc"?
What is the power acting technique?
There are six elements that compose the power acting technique1. The power relaxation2. The power visualization3. The power concentration4. The conscious power memory5. The emotional power memory6. The power improvisationTHE PURPOSE OF THE SIX ELEMENTS OF THE POWER ACTING TECHNIQUE:Power relaxation: Helps to develop the ability to relax at will.Power visualization: Helps to develop the ability to visualize.Power concentration: Helps to develop the ability to concentrate easily or at will.Conscious power memory: This exercise helps enhance the five senses.Emotional power memory: This exercise helps to develop emotional expression.Power Improvisation: Helps to develop the ability to improvise.
What is management of school?
to develop power
How do you develop clairvoyance?
I think it is possible that you can develop a kind of power similar to clairvoyance.
What is the duration of Power Lunch?
The duration of Power Lunch is 3600.0 seconds.
