Recent content by Jshua Monkoe

Why actually does "hot" water freeze before cold water? This sounds very basic but believe me I can't come up with a single feasible reason

@Nuke done, i think you're right

cleared Borek! Couldn't see this up

Homework Statement i am given the equation of a parabola to be y=2x^2-2x+3 and asked to sketch the parabola Homework Equations y=1/2(l-p)(x-k)^2+(l+p)/2 (l+p)/2=h vertex is at (k,h) equation of the directrix is y=p distance[(k,h) to y=p]=distance[(x,y) to (k,h)] The Attempt...

Homework Statement At a conference of 5 powers,each deligation consists of 3 members. If each delegation sits together, with the leader in the middle, in how many ways ca the members be arranged at a round table? Homework Equations No. of ways of arranging n objects around a...

i think your attempt is exactly what the question required

Homework Statement A rifle bullet with mass 8.00g strikes and embeds itself in a block with mass 0.992kg that rests on a frictionless, horizontal surface and is attached to a coil spring. The impact compresses the spring 15.0cm. The callibration of the spring shows that a force of 0.750N is...

[b]1. Homework Statement Why is it so important to show state symbols when writing chemical equations involving enthalpy changes? [b]3. The Attempt at a Solution I guess: from the thermochemical eqn deltaH=Sigma[H_{f}][products]-Sigma[H_{f}][reactants]; because the enthalpy of...