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Volume of a sphere = 4/3*pi*radius3

Surface area of a sphere = 4*pi*radius2

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โˆ™ 2014-02-23 14:23:08
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Q: How do you find mass of a sphere when only radius is given?
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How do you find the density of a sphere given its mass and radius?

Density = mass/ volume volume= 4/3(pie)(r^3) ***r= radius in meters** so find volume then divide mass by volume and there you go.


How do you find mass and volume if given radio and density?

Not sure how a radio can help. If you are given the radius (including units) of a sphere, the volume is 4/3*pi*r3 cubic units. Then mass = density*volume, in the appropriate units.


What is the formula for the mass of a sphere?

The mass of a sphere is 4/3*pi*r3*d where r is the radius of the sphere and d is the density of the material of the sphere.


Density of a sphere?

you need the mass and radius of the sphere- density = mass divided by volume, so mass/volume. the volume of a sphere is 4 divided by 3 multiplied by pi multiplied by the radius squared. 4/3(π)(r^2).


A solid aluminum sphere has a mass of 81g. Using the density of aluminum what is the radius of the sphere in inches?

Density = mass / volume. You have the density of aluminum and the mass of the aluminum sphere. The volume of a sphere is 4/3*Pi*r^3. Therefore volume = 4/3*Pi*r^3 = mass / density. Solve for r, which is the radius of the sphere.


How do you derive the moment of inertia of solid sphere?

mass moment of inertia for a solid sphere: I = (2 /5) * mass * radius2 (mass in kg, radius in metres)


What is the radius Schwarzschild of a body?

The Schwarzschild radius is the radius of a sphere such that, if all the mass of an object is compressed within that sphere, the escape speed from the surface of the sphere would equal the speed of light. An example of an object smaller than its Schwarzschild radius is a black hole.


What is the mass in grams of a sphere with 3cm radius if the mass of a steel sphere of a radius 2.5cm is 500g?

Vol(3)/Vol(2.5) = 33/2.53 = 1.23 So Mass(3) = 1.23*Mass(2.5) = 1.23*500 = 864 grams


Two spheres are cut from a certain uniform rock One has radius 4.15 cm The mass of the other is six times greater Find its radius?

Provided they are the same thickness, the larger sphere will have a radius of 10.165cm


How do you find the mass density of a sphere who's mass is 5000 grams?

Density is the mass per unit volume. e.g. kg/m3. But you've only given one of the quantities needed - we still need the volume of the sphere.


How do you find the radius of a sphere based on the weight in pounds?

You need to know if the sphere is solid or hollow. You also need the "density" in terms of pounds weight per unit volume. Then Volume = Mass/Density And Radius = cuberoot[3*Vol/(4*pi)]


What will be the mass of a body at the centre of the earth as compared to other places on the earth?

Mass is conserved which means that a body will have the same mass wherever it goes. But at the centre of a masive sphere the body has no gravity acting on it so its weight is zero. At an intermediated radius the force on it is obviously less than at the surface, and Isac Newton proved that a body at a given distance inside a sphere feels a gravitational force from a sub-sphere of radius equal the distance of the body from the centre. In other words the body feels no gravity from the shell outside its own radius.

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