Recent questions tagged surface

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Does a regression model surface causal relationships?

asked Sep 3 in Economics & Finance by MathsGee Platinum (102k points) | 68 views

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What is a unilateral surface? Give examples

asked Mar 7 in Mathematics by Maths-Genie Bronze Status (8.8k points) | 280 views

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What is the formula for the surface area of a sphere?

asked Feb 8 in Mathematics by MathsGee Platinum (102k points) | 259 views

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How do we calculate the surface area of a cube?

asked Feb 8 in Mathematics by MathsGee Platinum (102k points) | 335 views

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What is surface area in mathematics?

asked Feb 8 in Mathematics by MathsGee Platinum (102k points) | 229 views

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How do you find the surface area of a 3-dimensional shape?

asked Feb 7 in Mathematics by AstraNova Diamond (58.6k points) | 173 views

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How do you find the surface area of a sphere?

asked Jan 28 in Mathematics by AstraNova Diamond (58.6k points) | 243 views

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What is the formula for the volume of a cone?

asked Jan 27 in Mathematics by AstraNova Diamond (58.6k points) | 211 views

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What is the formula for the surface area of a sphere?

asked Jan 27 in Mathematics by AstraNova Diamond (58.6k points) | 221 views

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What is the formula for the volume of a cylinder?

asked Jan 27 in Mathematics by AstraNova Diamond (58.6k points) | 207 views

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What is the volume of a sphere with a radius of 5?

asked Jan 27 in Mathematics by AstraNova Diamond (58.6k points) | 208 views

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An open rectangular box with square base is to be made from 48 sq. m of material. what is the largest possible volume of the box in cubic meters?

asked Jan 27 in Mathematics by AstraNova Diamond (58.6k points) | 162 views

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The volume of a cube is $27 \mathrm{~cm}^3$. Determine the surface area of the cube.

asked Dec 5, 2022 in Mathematics by MathsGee Platinum (102k points) | 224 views

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What is a normal line?

asked Sep 12, 2022 in Mathematics by AstraNova Diamond (58.6k points) | 162 views

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How does the magnetic field line flux through a closed surface depend on the number and strength of the elementary magnets enclosed by the surface?

asked Aug 15, 2022 in General Knowledge by AstraNova Diamond (58.6k points) | 270 views

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Calculate the total Surface area of a Cylinder with length $10 \mathrm{~cm}$ and diameter $28 \mathrm{~cm}$. Use $\pi=3.14$

asked Jul 15, 2022 in Mathematics by AstraNova Diamond (58.6k points) | 198 views

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Polyhedron $P$ is inscribed in a sphere of radius 36 (meaning that all vertices of $P$ lie on the sphere surface). What is the least upper bound on the ratio \[ \frac{\text { volume of } P}{\text { surface area of } P} ? \]

asked Jul 10, 2022 in Mathematics by AstraNova Diamond (58.6k points) | 458 views

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Each edge of a cube has length 3 inches. What is the number of square inches in the cube's total surface area?

asked Jul 10, 2022 in Mathematics by AstraNova Diamond (58.6k points) | 255 views

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What is absolute altitude?

asked Jun 19, 2022 in General Knowledge by pilot_H Wooden Status (498 points) | 327 views

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Suppose $S$ is a piecewise smooth surface which forms the complete boundary of a bounded closed point set $V$, and $S$ is oriented by its normal being outwards from $V$. Then

asked Feb 20, 2022 in Mathematics by MathsGee Platinum (102k points) | 648 views

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Suppose $S$ is an oriented surface with boundary $\partial S$ which is oriented so that its direction is clockwise relative to the normals of $S$. Then

asked Feb 20, 2022 in Mathematics by MathsGee Platinum (102k points) | 278 views

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A parametrized surface $S$ is defined by

asked Feb 20, 2022 in Mathematics by MathsGee Platinum (102k points) | 276 views

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Which measurement is more accurate: taking Earth’s surface temperature from the ground or from space?

asked Feb 19, 2022 in General Knowledge by MathsGee Platinum (102k points) | 338 views

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A boy is in a pool and shines a flashlight toward the level of it at a $35^{\circ}$ angle to the vertical. At what angle does the flashlight beam leave the pool? (the index of refraction of glass is 1.33).

asked Jan 26, 2022 in General Knowledge by MathsGee Platinum (102k points) | 1.7k views

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A beam of flashlight traveling in air incident on a surface of a thin glass at an angle of $38^{\circ}$ with the normal. The index of refraction of the glass is $1.56$. What is the angle of refraction?

asked Jan 26, 2022 in General Knowledge by MathsGee Platinum (102k points) | 1.9k views

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What is the critical angle for light rays passing from: a) glass into air b) glass into water

asked Jan 26, 2022 in General Knowledge by MathsGee Platinum (102k points) | 405 views

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An underwater swimmer looks up toward the surface of the water on a line of sight that makes an angle of $25^{\circ}$ with a normal to the surface of the water. What is the angle of incidence in air for the light rays that enter the swimmer's eye?

asked Jan 26, 2022 in General Knowledge by MathsGee Platinum (102k points) | 530 views

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In order to create an isometric circle to represent a hole through the top surface of a box, the drafter must insure that the correct isoplane has been selected by scrolling through the isoplanes using the key.

asked Oct 13, 2021 in General Knowledge by MathsGee Platinum (102k points) | 491 views

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After a projectile is fired horizontally near the earth's surface, the horizontal component of its velocity, neglecting any air resistance:

asked Oct 5, 2021 in General Knowledge by Digitized Wooden Status (682 points) | 1.2k views

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The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is:

asked Oct 5, 2021 in General Knowledge by Digitized Wooden Status (682 points) | 1.0k views

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Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive interference will occur for a film thickness of:

asked Oct 5, 2021 in General Knowledge by Digitized Wooden Status (682 points) | 597 views

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A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the velocity of the mass is:

asked Oct 5, 2021 in General Knowledge by Digitized Wooden Status (682 points) | 663 views

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Assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal. What is the angle between the incident ray and the reflected ray?

asked Oct 5, 2021 in General Knowledge by Digitized Wooden Status (682 points) | 906 views

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A body $\mathrm{P}$ of mass $\mathrm{q} \mathrm{kg}$ is suspended by two light inextensible strings $\mathrm{AB}$ and $\mathrm{DB}$ attached to a horizontal table.

asked Sep 12, 2021 in Mathematics by MathsGee Platinum (102k points) | 305 views

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Find the cosine of an angle that goes through the point $\left(\frac{\sqrt{2}}{2}, \frac{\sqrt{2}}{2}\right)$.

asked Jun 26, 2021 in Mathematics by MathsGee Platinum (102k points) | 291 views

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The length of the diagonal of a wooden cube is $24 \mathrm{~cm} .$ The cube is cut into the cylinder of the biggest volume possible. The volume of the cylinder is:

asked Jun 16, 2021 in Mathematics by MathsGee Platinum (102k points) | 990 views

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In a thermo flask, heat loss by radiation is minimized by the

asked May 20, 2021 in General Knowledge by MathsGee Platinum (102k points) | 208 views

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Would it possible for the first water tank to hold all the water from the other 19 tanks? Motivate your answer.

asked May 14, 2021 in Mathematics by MathsGee Platinum (102k points) | 505 views

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The surface area of a cube is $96 \mathrm{~cm}^{2}$. Determine the volume of the cube in $\mathrm{cm}^{3}$.

asked May 12, 2021 in Mathematics by MathsGee Platinum (102k points) | 516 views

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Two boxes, $\mathrm{P}$ and $\mathbf{Q}$, resting on a rough horizontal surface, are connected by a light inextensible string. The boxes have masses $5 \mathrm{~kg}$ and $2 \mathrm{~kg}$ respectively.

asked May 8, 2021 in General Knowledge by MathsGee Platinum (102k points) | 1.5k views

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The gravitational acceleration on the surface of planet $\mathrm{Y}$ with mass $2 \mathrm{M}$ and radius $1 / 2 r$ is $\ldots$

asked May 7, 2021 in General Knowledge by MathsGee Platinum (102k points) | 420 views

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Is there an object that has curved surfaces here?

asked Dec 2, 2020 in Mathematics by CT Silver Status (24.7k points) | 249 views

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What is the minimum energy needed to remove an electron from the surface of a metal called?

asked Nov 2, 2020 in General Knowledge by MathsGee Platinum (102k points) | 462 views

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Why is it that when two conductors(even with different sizes or charges) are connected, their voltage across the surface is the same.

asked Sep 5, 2020 in General Knowledge by Student Bronze Status (5.7k points) | 300 views

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I have a soft drink can with a volume of 340, a height of h cm and a radius of r cm.

asked Aug 23, 2020 in Mathematics by CT Silver Status (24.7k points) | 1.0k views

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Calculate: a. Surface area of the cube

asked Aug 20, 2020 in Mathematics by joshua-mwanza Gold Status (26.7k points) | 2.5k views

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What term is used to describe a flat surface that extends without end in all directions?

asked Jul 3, 2020 in Mathematics by anonymous | 294 views

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Which property of water allows small animals to skate on water?

asked Jun 13, 2020 in General Knowledge by MathsGee Platinum (102k points) | 360 views

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The lid perfectly fits the box when closing, its width is 21.54 cm. Show how this is calculated using Pythagoras theorem.

asked Jun 11, 2020 in Mathematics by joshua-mwanza Gold Status (26.7k points) | 424 views

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How much fabric will Mrs Mpanza need (in m^2) to cover the sides and base on the inside (but not the lid) of a rectangular laundry basket?

asked Jun 10, 2020 in Mathematics by joshua-mwanza Gold Status (26.7k points) | 799 views

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