Topic profile page for Kinetic Energy.
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Topic "Kinetic energy" was discussed 0 times on 0 sites in last 3 months
Will Vibrations Power Your Next Cell Phone?: We've... Will Vibrations Power Your Next Cell Phone?: We've covered the concept of kinetic energy before and have even seen... http://bit.ly/534O7K 1:37 PM Dec 1st from twitterfeed
Started 1 day, 4 hours ago (2009-12-26 18:01:00)
by flyin_bryan174
I was just wondering what the formula is to figure the amount of kinetic energy on bows. and if anybody knows what the new Z7 is rated at. thanks happy holidays!! :confused
Started 1 day, 9 hours ago (2009-12-26 12:50:00)
by Bjarne
How can the kinetic energy of a planet are calculated. I know the KE equation but how can I calculated the mass momentum (average speed) of the mass of a rotating body.
Started 3 days, 12 hours ago (2009-12-24 10:16:00)
by Vinny_HC
Ok this has been baffling me. As many of you know I am just getting into bowhunting. I have been doing my research on equipment and sales people at archery shops keep talking about Kinetic energy for killing an animal. I have also read many internet posts in length about this topic. This makes no sense to me at all to be honest. To start off I am not an expert by any means on this matter...
Started 3 days, 15 hours ago (2009-12-24 07:22:00)
by Puma24
Hey! So, as I understand, kinetic energy of a moving object is proportional to its velocity squared. So I'm wondering where these inconsistencies come from, and how they are resolved: So, say two objects of mass M are travelling, with reference to a stationary observer, one in the left hand direction and one in the right hand direction, both at ...
Started 1 week, 4 days ago (2009-12-16 05:21:00)
by victoriafello
1. The problem statement, all variables and given/known data a bullet of mass M is fired into a block of wood of mass m, the bullet sticks in the wood and causes it to swing upwards by height h calculate the change in kinetic energy from the bullet to the bullet+wood 2. Relevant equations kinetic energy = 1/2MV^2 V = SQRT (2gh) ...
Started 1 week, 5 days ago (2009-12-15 15:05:00)
by redsmithers91
1. The problem statement, all variables and given/known data A ball is thrown vertically downward strikes a surface with a speed of 15m/s. It then bounces, and reaches a maximum height of 5 meters. Neglect air resistance on the ball. a) What is the speed of the ball immediately after it rebounds from the surface? b)What fraction of the ball's initial ...
Started 1 week, 6 days ago (2009-12-14 21:03:00)
by orbits
UPS delivery man is loading his truck by shoving the parcels up a ramp. The ramp is inclined at an angle of 30 degrees above the horizontal. He sends a parcel of mass 15 kg, up this ramp. the coefficient of sliding friction is .10 and gravitational force is class standard (10). A The magnitude of the kinetic friction acting on the parcel is? B He ...
Started 1 week, 6 days ago (2009-12-14 16:57:00)
by fizzsucks
1. The problem statement, all variables and given/known data A bike rider approaches a hill at a speed of 7.7m/s. The mass of the bike and rider is 88kg. a) What is the kinetic energy of the system? Ek = 0.5(88*7.7^2) = 2.6x10^3 J b) Assuming no friction, how far will the bike coast up the hill? 2. Relevant equations Ek = 1/2mv...
Started 2 days, 23 hours ago (2009-12-24 22:57:00)
by Butternut
Quote: Originally Posted by 5MilesBack 270gr? Every single arrow I have is heavier than that, and that's without BH's. I have shot 300grn. out to 50 yards for well over a dozen years and to date....every shot has been firmly plated in the ground on the other side of the deer. If you go light, you have to go ...
Started 3 days, 4 hours ago (2009-12-24 18:09:00)
by Cleonis
Originally Posted by Puma24 Hey! So, as I understand, kinetic energy of a moving object is proportional to its velocity squared. So I'm wondering where these inconsistencies come from, and how they are resolved: So, say two objects of...
Started 1 day, 6 hours ago (2009-12-26 16:35:00)
by editor
Easy to get an average speed. You know the orbital circumference and the length of the year. It's just distance /time. that gives orbital KE. For the rotational KE you will have to assume constant density (not the real world) and use the rotational speed at the equator. Rotational inertia of a sphere is I = 2/5 mr^2 http://www.physicsforums.com/showthr...16#post2506 416
Started 1 week, 1 day ago (2009-12-18 23:01:00)
by rock.freak667
I believe the rankine cycle and brayton cycle works like that. Steam/air causes a turbine to spin which cuts a magnetic field and induces an output emf. EDIT: Sorry, I now read the other posts, ^^ that was not what you wanted to know. Sorry.
