What formula do you use to calculate density?
The formula for density is d = M/V, where d is density, M is mass, and V is volume.
What are the 3 formulas commonly used in density calculations?
What are the three formulas for density?
- To work out density: p = m / V.
- To work out the mass: m = p x V.
- To work out the volume: V = m / p.
What is the density of a glass cup?
The density of glass is 2.5, which gives flat glass a mass of 2.5kg per m2 per mm of thickness, or 2500 kg per m3.
Which is more dense glass or water?
Glass is denser than water because speed of light in glass is less than that of water.
Does light travel faster in water than in glass?
Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometers per second in glass (refractive index of 1.5).
Which is rarer water or glass?
Solution: Water is rarer than glass. Light travels from water to glass, i.e from a rarer medium to a denser medium.
Why is wood not dense?
Wood is less dense than water. This means that particles of water are more close together than particles of wood. And so the kinetic energy of water particles should be less than the kinetic energy of wood particles.
Which wood will sink in water?
Lignum vitae is hard and durable, and is also the densest wood traded (average dried density: ~79 lbs/ft3 or ~1260 kg/m3); it will easily sink in water.
Do logs sink?
An object that is less dense than water can be held up by water, and so it floats. An object that is more dense than water will sink. The logs that float are less dense than the logs that sink. Unlike the other two examples, this dense wood sinks all the way to the bottom when placed in water.
Why does a feather float in water?
The density of the feather is less as compared to that of water makes the feather floats on water. A light substance whose density is less as compared to that of water floats in water. This is why it is seen that lighter things cannot easily sink in the water rather it floats on the water.
Will a paperclip sink?
As it weighs much more than the water it is displacing, it will sink. However, the surface tension changes things for the paperclip. With the surface tension bending the water, it displaces more than half of a gram of water, allowing the paperclip to float, delicately, on the surface.
Is paperclip more dense than water?
The paper clip is more dense than water but can rest on the surface of the water because of the water’s surface tension.