Problem1 A spherical ball of radiusR=0.5mwith a volume charge density ofρ=3mCm3sitting inside of it has a very thin shell covering its surface with a surface charge density ofσ=1.2mCm2on it as shown in the below diagram. ...
4/3π(r+1)^3 - 4/3πr^3,剩下的自己化简.结果一 题目 一道SAT数学题A spherical balloon with radius r inches has volume V(r)=4/3πr^3.Find a function that represents the amount of air required to inflate the balloon from a radius of r inches to a radius of r+1 inches. 答案...
So the radius of the sphere is r = 3. From this, its diameter = 2(3) = 6 units. Answer:The diameter of the given spherical ball = 6 units. Example 2:The volume of a sphere is 28π cm3. Find the diameter of the sphere using volume. Solution The volume of the given sphere is,...
1.99 cm. To calculate the radius r of a sphere given the surface area (A), rearrange the formula: A = 4 ×π× r² To isolate the radius: r = √[A / (4 ×π)] Notice how the area of a sphere is exactly four times the area of the circle with the same radius! How do I...
We can think of a ball as a real-life example of a sphere, which can be interpreted as a circle in three dimensions. If we know the radius of the sphere (distance from center to the boundary), then we can calculate the volume of the sphere as: ...
The red lines in the CAD drawings of Cases 1c, 2c, 3c, and 4c shown in Figure 3 indicate the radial distance of the cylindrical plane from the centre line, the radial position of the centre of the sphere from the centre line and the radius of the sphere respectively. 3.1.2. Du Toi...
A sphere of metal has a radius of 5.7 cm and a density of 8.33 g/cm3. What is the mass of the sphere? Volume and Mass of Sphere: Firstly, the value of the volume of the given metal sphere is computed by the formula shown below: V=43πr3, ...
The radius of a spherical ball is measured at r=17 cm. Estimate the maximum error in the volume if r is accurate to within 0.3 cm. (Give your answer to one decimal place.) ΔV Estimate the maximum error in the surface area if r is a...
A conducting spherical shell of inner radius a and outer radius b carries a net charge -3Q. A point charge Q is placed at the center of this shell. How much charge is on each surface (inner and outer) of the conductor? A、 B、 C、 D、...
A spherical ball will just pass through a circular hole with an area of 76.6 cm2. What is the volume of the ball (in cm3)? Sphere and Circle: A sphere is a three-dimensional object; however, a circle is a two-dimensional object. Both...