The air pressure within the bubble is no longer equal to the pressure outside of the bubble. This could also be caused by variations in thickness of the material (water, soap, etc) creating the bubble.So basicly saying that bubbles have things inside that are really soft that makes a bubble burst.
It is the ratio of the density of a material to that of water at 4 degrees Celsius.
It's the same as the number of kilograms per liter.
'Specific gravity' has, for some time, now, been called relative density.
How fast is sound and light?
The speed of sound is at about 344 m/s and the speed of light is at about 3 X 108 m/s. If you would like to test it out, wait for a thunderstorm. The lightning and the thunder start at the same place while the lightning is faster. That will demonstrate the speed difference of light and sound.
Light takes 8 1/2 minutes to reach us from the Sun.
The speed of sound varies with the relative motion of the observer but the speed of light is constant regardless of the relative speed. See Einstein's special theory of relativity. The speed of light is roughly 882 thousand times the speed of sound.
-- Sound takes about 4.7 seconds to cover 1 mile.
-- Light takes about 0.0000054 second to cover 1 mile.
-- In the time it takes sound to travel one mile, light travels 881,741 miles .
During a thunderstorm, you see the lightning before you hear the thunder,
even though they're caused by the same event.
Another clue to an easy answer: Nothing is faster than the speed of light. Sound crawls.
Sound speed is about 700 mph. (about 1/5th of a mile per second)
Light speed is about 186,000 mps. Light goes about 930,000 times quicker.
If someone claps their hands 250 feet away, light can go 8½ times round the world while you wait to hear it. Speed of light is a lot faster...the speed of light goes 299,792,458 meters per sec and the speed of sound goes 343.2
meters per sec
Gravitational Potential Energy has the formula Es = - GmM/r.
Change in Potential Energy by Height
The energy of gravitational potential (in joules) is given by mass (in kilograms) multiplied by height (in meters) multiplied by the strength of the gravitational field (in newtons per kilogram).
On earth, gravitational field strength (g) equals about 9.81Nkg-1. This estimate should be used because g depends in complex ways upon your latitude, altitude and local topography.
So use GPE = mgh = 9.81(m)(h)
Gravitational Potential Energy= Gravity(9.81) x Mass(kg) x Height (m)*
*Strictly speaking this is the change in energy as dependent on a change in height. it also can be GPE=mgh. The formula for gravitational potential energy is - GPE (J) = mass (kg) x gravitational field strength (or 'g') (N/kg) x height (m).
Work is force times distance. Power is work per unit time. Looks like you have all you need.