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If you topple from your treehouse you'll continuously gain momentum as you fall to the ground below doesn' t this violate the law of conservation of momentum?
"Momentum is conserved if no net external force acts.If you consider just the falling object (you that is), there is an external force acting on it - gravity. So there is no violation of conservation of momentum here.On the other hand, if you consider the falling you and the earth as two interacting objects, then there is no net external force, just the internal gravitational forces acting between you and the earth. So you and the earth gain equal but opposite amounts of momentum, and momentum is conserved."http://intranet.emmawillard.org/Science/physicscqanswers.html
Why do toilets swirl?
Toilet water swirls due to a law of motion called "Angular Momentum". This is one of the laws of planetary motion discovered by Keppler. It basically describes the natural movement of matter whether it be water in a toilet bowl, planets around a sun or galaxies around a black hole. This natural movement is of a circular nature.Of course in a toilet bowl often times the water shoots out at an angle upon flushing so that a circular motion is created on purpose. But a more natural example of this is the water that goes down the drain in a bath tub. Again we see the same motion as a galaxy around a central mass in the center. This is theorized to either be a black hole or simply a globular cluster of stars forming a gravitic mass at the center of each galaxy to which other stars are pulled into via the strong gravitational pull of this gravitic mass or black hole.For a much more detailed and specific explanation of angular momentum, keep reading and visit the Wiki link below.In physics, the angular momentum of a particle about an origin is a vector quantity equal to the mass of the particle multiplied by the cross product of the position vector of the particle with its velocity vector.[1] The angular momentum of a system of particles is the sum of that of the particles within it.[2] Angular momentum is an important concept in both physics and engineering, with numerous applications. Angular momentum is important in physics because it is a conserved quantity: a system's angular momentum stays constant unless an external torque acts on it. Rotational symmetry of space is related to the conservation of angular momentum as an example of Noether's theorem. The conservation of angular momentum explains many phenomena in nature. http://en.wikipedia.org/wiki/Angular_momentum
1 Dimension formula for Angular momentum?
Sorry i don't know the exact formula but it involves the quantum physics tensorantisymmetric angular momentum operators. it something to do with the ability to generalize advanced mathematics of the universe to arbitrary dimensions i have not tried to do math but i think it just is helicity. angular momentum in 1 dimension simply is a + or a - (and a h-bar/2 constant somewhere i think) that says if its motion is aligned with its spinsor or something. to generalise angular momentum in n-dimensional case is; 1 a + or a - (one level below a scalar) 2 a scalar (just a number with no direction other than + and -) 3 a vector (has direction and value) 4 a tensor (a matrix in this case) that has more than one direction and a value space time geometry or 1 - 3 dimensions a complicated Clifford algebra tensor that i don't want to think of basically in classical mechanics angular momentum is only defined in dimensions of 2 and 3 physicists and mathematicians have generalized it to n-dimensional space but it is not a what you would learn in high school. hope i did OK since i don't even understand all of this but it should at least tell you how complicated it is. try out http:/en.wikipedia.org/wiki/Feynman_checkerboard it is a topic on angular momentum in 1 spacial dimension by some one much smarter than me
A moving object must have potential energy?
An object that has kinetic energy must have momentum, velocity, and speed. Momentum is mass times velocity. Kinetic energy is mass times velocity squared. Speed is distance divided by time. Kinetic energy is the energy of the object's motion. An object that has kinetic energy must have momentum because is the force or speed of movement. For example the ball gained momentum as it rolled down the hill. An object that has kinetic energy must have momentum, velocity, and speed because if an object is in motion (has kinetic energy) it must be either gaining, losing, or at a constant momentum, it must have a velocity (basically speed) and speed because when an object is in motion, it MUST have a certain velocity or speed.
Why is braking less effective on a wet road than on a dry road?
Two reasons. The wet road has a lower coefficient of friction that the dry one. It is more slippery. The same goes for the brakes. If they are wet, they will be less effective because of the same reason. A higher amount of friction wastes more energy, in this case momentum, causing a loss of speed. http://en.wikipedia.org/wiki/Friction
If you topple from your treehouse you'll continuously gain momentum as you fall to the ground below doesn' t this violate the law of conservation of momentum?
"Momentum is conserved if no net external force acts.If you consider just the falling object (you that is), there is an external force acting on it - gravity. So there is no violation of conservation of momentum here.On the other hand, if you consider the falling you and the earth as two interacting objects, then there is no net external force, just the internal gravitational forces acting between you and the earth. So you and the earth gain equal but opposite amounts of momentum, and momentum is conserved."http://intranet.emmawillard.org/Science/physicscqanswers.html
What would have the most momentum a charging elephant a jumbo jet sitting on the runway or a baseball traveling at 100 km per h?
momentum = mass * velocity 1) a charging elephant mass = 7500 kg ( http://en.wikipedia.org/wiki/Elephant ) velocity = elephants may reach 25 km/h momentum = (7 500 kilograms) * 25 km/h = 52083 m kg / s 2) a jumbo jet sitting on the runway velocity = 0 momentum = 0 3) baseball traveling at 100 km/h mass = 145 g (http://hypertextbook.com/facts/1999/Chri…) velocity = 100 km/h momentum = (145 grams) * 100 km/h = 4.02 m kg / s The charging elephant wins PS: THIS IS NOT MY ANSWER! I FOUND IT ON YAHOO!
What is the procedure to apply for a marriage certificate after marriage?
http://india.gov.in/howdo/howdoi.php?service=3
Why do planets rotate around the sun in the same direction?
They don't rotate in the same direction. But most of the rotation comes about from the conservation of angular momentum. Angular momentum is given by L=m*w*r2 where m is the mass, w is the angular velocity in radians per second, and r is the radius of the circular motion. Due to conservation of angular momentum, if the radius of the orbit decreases, then its angular velocity must increase (as the mass is constant). Hope I answered your question... You can find more on this website(I copied and pasted the info above): http://curious.astro.cornell.edu/question.php?number=416
Why do toilets swirl?
Toilet water swirls due to a law of motion called "Angular Momentum". This is one of the laws of planetary motion discovered by Keppler. It basically describes the natural movement of matter whether it be water in a toilet bowl, planets around a sun or galaxies around a black hole. This natural movement is of a circular nature.Of course in a toilet bowl often times the water shoots out at an angle upon flushing so that a circular motion is created on purpose. But a more natural example of this is the water that goes down the drain in a bath tub. Again we see the same motion as a galaxy around a central mass in the center. This is theorized to either be a black hole or simply a globular cluster of stars forming a gravitic mass at the center of each galaxy to which other stars are pulled into via the strong gravitational pull of this gravitic mass or black hole.For a much more detailed and specific explanation of angular momentum, keep reading and visit the Wiki link below.In physics, the angular momentum of a particle about an origin is a vector quantity equal to the mass of the particle multiplied by the cross product of the position vector of the particle with its velocity vector.[1] The angular momentum of a system of particles is the sum of that of the particles within it.[2] Angular momentum is an important concept in both physics and engineering, with numerous applications. Angular momentum is important in physics because it is a conserved quantity: a system's angular momentum stays constant unless an external torque acts on it. Rotational symmetry of space is related to the conservation of angular momentum as an example of Noether's theorem. The conservation of angular momentum explains many phenomena in nature. http://en.wikipedia.org/wiki/Angular_momentum
What is the website for science in hockey?
In 2001, the "Physics of Hockey: Sliding Friction and Momentum on Ice" was born. It is the top site for information. Now it is simply called Hockey Physics 2.0. Go there: http://www.hockeyphysics.com
1 Dimension formula for Angular momentum?
Sorry i don't know the exact formula but it involves the quantum physics tensorantisymmetric angular momentum operators. it something to do with the ability to generalize advanced mathematics of the universe to arbitrary dimensions i have not tried to do math but i think it just is helicity. angular momentum in 1 dimension simply is a + or a - (and a h-bar/2 constant somewhere i think) that says if its motion is aligned with its spinsor or something. to generalise angular momentum in n-dimensional case is; 1 a + or a - (one level below a scalar) 2 a scalar (just a number with no direction other than + and -) 3 a vector (has direction and value) 4 a tensor (a matrix in this case) that has more than one direction and a value space time geometry or 1 - 3 dimensions a complicated Clifford algebra tensor that i don't want to think of basically in classical mechanics angular momentum is only defined in dimensions of 2 and 3 physicists and mathematicians have generalized it to n-dimensional space but it is not a what you would learn in high school. hope i did OK since i don't even understand all of this but it should at least tell you how complicated it is. try out http:/en.wikipedia.org/wiki/Feynman_checkerboard it is a topic on angular momentum in 1 spacial dimension by some one much smarter than me
What is the law of momentum?
Put in the simplest form and avoiding the math there are two parts to the law of the pendulum. The longer the chord the longer it takes for each oscilation. Increasing length by 4 times doubles the period and halves the frequency. The horizontal speed at the bottom is the same as the vertical speed would be if the body had fallen the distance from its highest point. More detailed information, inluding an experiment simulator is available at: http://www.myphysicslab.com/pendulum1.html
What type of degree/certificate is needed to service boilers?
To be able to service boilers you will need to be a Boiler technician. To become a boiler technician, you will need a Degree in Stationary engineering http://education-portal.com/articles/Boiler_Technician_Career_Information_About_Becoming_a_Boiler_Technician.html
How can you apply for a certificate of academic standing?
http://www.sra.org.uk/students/certificate-academic-standing.page
Why is the world round not flat?
"Gravity is a centripetal force, it exerts its tremendous force inward, toward the center of gravity, always trying to form the Earth into a perfect sphere while the angular momentum is an outward tangential inertia (centrifugal force) that causes the oblate shape of the Earth." ~http://novan.com/earth.htm
Botswana junior certificate results 2008?
http://www.bec.co.bw/
