Recent content by disruptors

Hey guys, I've been spending a 3 hrs trying to figure this one out... 1) Why does adding sugar to rasberries make them juicy? to rephrase I mean why would the entire raspberry/sugar concoction become more juicer as a whole (why will there end up being juice in the bowl?) It has to do...

"Since speed is a constant, then there isn't a change in KE, so then work done has to be zero right?" Work isn't zero for individual forces just like urban said. On a frictional surface conservative energy isn't conserved thus W(neoconservative)=change(mgh)+0 KE...The force is...

Hey ppl, If you have a man pushing a box up a slope with a horizontal force at constant speed from distance a to b, can one assume the Work done by friction to be zero all the time since velocity is constant? or can one assume W(neoconservative)=change in U(gravitational PE) only, with...

an object launched vertically upward with an initial speed v. Neglect air resistance a)At what height h above the ground does the projectile have a speed of 0.5v? Express your answer in terms of v and the magnitude of the acceleration of gravity g. Using conservation of energy i found the...

thanks, i did that again and got it correct after i saw i made a calculating error

On a frictionless horizontal air table, puck A (with mass 0.366 kg) is moving toward puck B (with mass 0.254 kg ), which is initially at rest. After the collision, puck A has velocity 0.119 m/s to the left, and puck B has velocity 0.655 m/s to the right. a) What was the speed of puck A (Vai)...

yeah that helps thanks i was looking at it as an inelastic collision for the energy part i am using the equation 1/2 m1 v1(squared)i = 1/2 m1 v(squared)1f + 1/2 m2 v(squared)2f question is looking for change in kinetic energy DURING collision i calculated Final KE - Initial KE...

On a frictionless horizontal air table, puck A (with mass 0.366 kg) is moving toward puck B (with mass 0.254 kg ), which is initially at rest. After the collision, puck A has velocity 0.119 m/s to the left, and puck B has velocity 0.655 m/s to the right. What was the speed of puck A...

A horizontal force of 12 N pushes a 0.5 Kg block against a vertical wall. The block is initially at rest, If static and kinetic coefficients are 0.6 and 0.8 respectively what is the friction force? Basically the fbd has Force of 12 N across the x component(+) and the Normal force in the...

Mastering physics Hey ppl, I am using mastering physics as well, with the book PHYSICS FOR SCIENTISTS AND ENGINEERS. I find the assignments don't help at all or prepare me in any way for the exams, so it becomes a waste of a lot of time that could have been spent doing questions that help...

Hey ppl, just a quick question.. You have a 10 g ping pong ball with a diameter of 3.5 cm... a)The ball is shot straight up at twice its terminal speed. What is it’s initial acceleration? i know D=W at terminal speed but when u double it do you just assume D=4D and if you do how come...

never mind must have been my browser

oh sorry tiger, its okay i had to submit it, thanks for your time...i can't get the pic up for some reason..

here's the pic, thanks

Hey ppl, sorry I was just wondering if anyone knew how to do the question i posted earlier(TWO BLOCKS AND TWO PULLEYS), as I have to submit it and cannot figure it out still!? Thanks...