![ondreduty1789](/avatars/11176.jpg)
ondreduty1789
31.08.2019 •
Physics
What are the three shapes of galaxies?
Solved
Show answers
More tips
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- F Family and Home How to Remove Tar Stains: Tips and Recommendations from Experts...
- L Leisure and Entertainment How to Learn to Draw Graffiti: Tips for Beginners...
- G Goods and services How to sew a ribbon: Tips for beginners...
- L Leisure and Entertainment How to Land on the Moon: Your Comprehensive Guide...
- H Health and Medicine Novomin: What is it and how to use it?...
- A Art and Culture Attention, the Final Episode of Margo is Almost Here!...
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- S Style and Beauty How to Break in New Shoes: 7 Simple Methods...
Answers on questions: Physics
- P Physics Light of wavelength λ=0.01nm, is scattered at 1350 from a stationary electron. What is the kinetic energy of the recoiling electron?...
- P Physics An object that travels around another object in space is called?...
- P Physics What are some features that might allow you to identify unwarped mountain...
- P Physics Unnatural temperature increase in the atmosphere earth s surface is called...
- P Physics An oxygen ion has 8 protons and 10 electrons. Its net charge is negative 2 (-2). If an electron has a charge of negative 1.6 x 10⁻¹⁹ Coulomb, calculate the net charge...
- P Physics QZ Q2a A ware generator produces waves in a swimming pool as shown below: 다. What is the wavelength of the wave? 25m A...
- P Physics Choose the correct words from the box to complete the sentence below:...
- P Physics Question 26 suppose that a constant force is applied to an object. newton s second law of motion states that the acceleration of the object varies inversely with its...
- H Health What is conflict resolution? -making a resolution to avoid disagreements -finding a peaceful solution to a disagreement -creating relationships without disagreements...
- P Physics The american space station launched in 1973 disintegrated as it fell to earth in 1979. a. true b. false...
Ответ:
Ответ:
Ответ:
I will answer in English.
The weight of the kid is 30kg.
the surface of his sneakers is 150cm^2
and we know that pressure is defined as: P = F/A
where F is force, in this case, F is the weight of the kid, and A is the surface area.
When the kid is using both his legs to stand, the weight is divided equally between both legs, so we have 15kg per leg.
Then the pressure in each foot is:
P = 15kg/150cm^2 = 0.1 kg/cm^2
If he is using only one leg, then all the 30kg are being supported by that leg, then the pressure is:
P = 30kg/150cm^3 = 0.2g/cm^3