Recent content by zak.hja

Homework Statement There's a conceptual question I've encountered in my reading, wherein we're supposed to determine the validity of a statement: "According to Pascal’s principle, if you increase the pressure enough so that the force at one end of an oil-filled tube increases by 10 N, the force...

The assistance is very much appreciated -- thank you, Chet!

Yes, I meant the latter -- I apologize if my terminology is imprecise, as I'm still a bit unfamiliar with the topic. I understand why the rates are constant now; thank you! However, there's one thing that's still a bit unclear to me: is the steady state independent of the thermal conductivity...

Thank you for responding! Hmm, I think I follow: are we assuming that the heat has already been "conducted through", as opposed to viewing the transfer as a gradual process (wherein the temperatures aren't the same until equilibrium is reached)?

Homework Statement Three building materials, plasterboard [k = 0.30 J/(s m Co)], brick [k = 0.60 J/(s m Co)], and wood [k = 0.10 J/(s m Co)], are sandwiched together (as I've tried to show below). The temperatures at the inside and outside surfaces are 28.9°C and 0°C, respectively. Each...

Homework Statement A boy rides his bicycle down the sidewalk at a velocity of 0.50 m/s [N]. As he passes his friend, who is 5.0m east of his position, he throws a ball to him. a) If he can throw the ball at a maximum velocity of 2.0m/s, in which direction must he throw it in order for it to...

So velocity is equal to distance divided by time, or in the case of the accelerating ice cream truck, acceleration is equal to change in velocity divided by the time. Hang on, the child is running 30m initially before he even reaches the same point at which the truck began accelerating. So...

Thank-you :) So wait, which expression could I use with position vs. time? These are the equations that I have learned so far: d=(vf+vi)/2*t vf=vi+at d=(vi)t+1/2at^2 vf^2=vi^2+2ad d=(vf)t-1/2at^2

Homework Statement A child stands 30m behind an ice-cream truck. The child then runs towards the truck at a constant velocity of 5m/s. At that moment, the ice-cream truck accelerates at 1m/s^2 from rest to drive away from the child. Does the child catch the ice-cream truck? Homework Equations...