Recent content by scharry03

YES you are absolutely right, I accidentally made the 6 x 1.67 a negative, not a positive! I got the right answer now, thanks so much!

The clockwise direction traversed is just used to find the signs of each resistance. If the current with a resistor goes with the clockwise direction previously chosen for the loop, the resistor has a negative voltage. If the current with a resistor goes opposite the clockwise direction chosen...

Homework Statement Where V1 = 14V and V2 = 10V, solve for I1, I2, and I3. Homework Equations DeltaV = IR Sigma(I) at junction = 0 Sigma(DeltaV) of loop = 0 The Attempt at a Solution I began by assuming clockwise direction of the loops, to determine the signs of the resistance to follow. I...

I've never framed these questions in terms of limits as you are doing, so I don't really understand what you mean. I had a chance to ask my professor about this and he said the first equation is used in something whose temperature isn't changing, and the second is used in the case that it is...

Does it mean another way to find deltaS(hot) is to do m(cold) x c(cold) x [(T(hot)-T(cold)/Thot] ?

Homework Statement Man with a temperature of 310.15 K and a mass of 70 kg drinks 0.4536 kg of water at 275 K. Ignoring the temperature change of the man from the water intake (assume human body is a reservoir always at same temperature), find entropy increase of entire system. Homework...

Awesome, that makes total sense. Thanks!

This is mostly a conceptual confusion I'm having, not a specific problem, so it didn't seem like it'd fit under homework problems. I'm having trouble understanding when potential energy should or shouldn't be used in a energy conservation equation. When looking at a problem with a skier going...

Okay, I didn't realize that centripetal acceleration wasn't parallel with the slope, but now that I think about it, that makes complete sense. Thanks!

Homework Statement A civil engineer wishes to redesign the curved roadway in Interactive Example 5.7 in such a way that a car will not have to rely on friction to round the curve without skidding. In other words, a car moving at the desig- nated speed can negotiate the curve even when the road...

got it... the Yf i used was not negative.

Homework Statement A skier leaves the ramp of a ski jump with a velocity of 10.0 m/s, 15.0° above the horizontal, as shown in Figure P3.57. The slope is inclined at 50.0°, and air resistance is negligible. Find the distance from the ramp to where the jumper lands . Homework Equations...