![jaydqueen3155](/avatars/26900.jpg)
jaydqueen3155
02.01.2021 •
Physics
Engineers were planning to install decorative columns made of marble, of density 2560kg/m cubed, in front of a building. The columns were 2.72m tall and of radius 45 cm
a) Calculate the mass of column
ii) Calculate the pressure exerted by each column on the ground
iii) Engineers found out that the ground beneath the columns would not withstand the pressure calculated in c(ii). Suggest 1 possible change to each column, the engineers do , to solve this problem
Solved
Show answers
More tips
- F Food and Cooking How to Cook Julienne? Recipes and Tips...
- H Health and Medicine At What Age Does a Person Stop Growing?...
- F Family and Home How to Choose a Name for Your Baby?...
- F Food and Cooking Discover the Health Benefits of Cedar Nuts...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
- F Food and Cooking How to Make Sushi: A Step-by-Step Guide to Perfectly Rolled Delights...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- F Food and Cooking Аэрогриль: Все, что нужно знать для подготовки здоровой и вкусной пищи...
- F Food and Cooking The Health Benefits of Flaxseed oil...
Answers on questions: Physics
- P Physics Abush baby, an african primate, is capable of leaping vertically to the remarkable height of 2.26 m. to jump this high, the bush baby accelerates over a distance of 0.160...
- P Physics Acoin with a 2-cm diameter is dropped onto a sheet of paper ruled by parallel lines that are 3 cm apart. which is more likely, that the coin will land on a line, or that...
- P Physics Acharge q is transferred from an initially uncharged plastic ball to an identical ball 12 cm away. the force of this attraction is then 17 mn. how many electrons were transferred...
- P Physics Adipole of moment 0.5 e·nm is placed in a uniform electric field with a magnitude of 12 times 104 n/c. what is the magnitude of the torque on the dipole when (a) the dipole...
- P Physics At the second maxima on either side of the central bright spot in a double-slit experiment, light from 1. one opening travels twice as far as light from the other opening....
- P Physics Atoms of the same element that have different masses are called...
- P Physics LOTS OF EASY POINTS do it right tho...
- P Physics Identify each setup Can someonee plz help me...
- P Physics A bird is standing on an electric transmission line carrying a large amount of current. Find the power dissipated by the bird If the current it experiences is 1.35-10 A...
- P Physics How does the viscosity of a liquid affect the definition of a liquid?...
Ответ:
See the answers below.
Explanation:
We must apply the definition of density which is the ratio of mass to volume.
where:
Ro = density = 2560 [kg/m³]
m = mass [kg]
v = volume [m³]
With the column height data and column radius we can calculate the volume, since it resembles the volume of a cylinder. In this way the volume of a cylinder is defined by the following expression.
where:
r = radius = 45 [cm] = 0.45 [m]
h = height = 2.72 [m]
a)
The mass can be calculated as follows.
ii)
Pressure is defined as the relationship of force over an area.
The area can be calculated with the radius of the cylinder.
Therefore
iii)
If the pressure is very large we must analyze the pressure equation again.
We can see that the pressure depends on the strength (weight) and the area of the column. In this way if we increase the value of the area (denominator) we see that the pressure decreases.
If the new Radius is 50 [cm] = 0.5 [m]
Now we can calculate again the pressure.
We can see the reduction in pressure.
Ответ:
D. 400 m
Explanation:
I just took the test, so I know that is right : )