Recent content by kiwikahuna

Homework Statement classify the following variables and functions as intensive or extensive. T,P, V, q (heat), w (work), U (internal energy), and H (enthalpy) The Attempt at a Solution I wanted to check up on my answers for this but I believe on T and P are intensive properties...

Homework Statement Electrical current is passed through a resistor immersed in a liquid in an adiabatic container. The temperature of the liquid is varied by 1 degree celsius. The system consists solely of the liquid. Does heat or work flow across the boundary between the system and...

Homework Statement A 0.1 kg block is suspended from a spring. When a small stone of mass 28 g is placed on the block, the spring stretches an additional 4.4 cm. With the stone on the block, the spring oscillates with an amplitude of 14 cm. (a) What is the frequency of the motion? (b) How...

Homework Statement A circuit contains only 0.197 H inductor. An AC voltage of peak value 166 V and frequency 60.5 Hz is applied to the circuit. When the voltage is 166 V, what is AC current? Answer in units of A. Homework Equations The Attempt at a Solution we know that...

Homework Statement A long straight wire carries a current 36 A. A rectangular loop with two sides parallel to the straight wire has sides 7.5 cm and 15 cm with its near side a distance 3 cm from the straight wire as shown in the figure. The permeability of free space is 4π e -7 T*m/A. Find...

Hmm...I'm still lost. Could you perhaps clarify what you mean and how those two equations would relate to each other.

Homework Statement Given: u_0 = 1.25664e-6 A 2 m long large coil with a radius of 14.6 cm and 320 turns surrounds a 4.2 m long solenoid with a radius of 4.6 cm and 7700 turns. The current in the solenoid changes as I = I_0 sin (2pi*f*t) where I_0= 30 A and f=60 Hz.Inside solenoid has...

I don't know whether to laugh or cry.. Turns out I did do the problem right except my rounding was a little bit off. I tried submiting 2.6002 cm and the darn system considered that answer right. Thank you SO much for your help.

Yep, the problem says that the answer has to be in cm units. Let me recheck my units... (1.67e-27 kg) (9.81 m/s^2) = (1.602e-19 C)(12200 m/s) * (B) B = 8.38e-12 Tesla 8.38 e-12 Tesla = [(4pi e-7)*(1.09e-6 A)] / [2pi * r] Hmm...everything looks like they are in the right units...

Unfortunately that's not the problem. The online homework automatically accepts as many sig figs as you can give it. I don't know why this is wrong though. I was sure I had it. -stressed------

No I tried submitting 2.5667 as the answer and it's still wrong. I think I might have gotten the formula wrong?

Homework Statement A long straight wire lies on a horizontal table and carries a current of 1.09 μA. A proton moves parallel to the wire (opposite the current) with a constant velocity of 12200 m/s at a distance d above the wire. The acceleration of gravity is 9.8 m/s2. Determine this...

Homework Statement Oops, I forgot to add in the second part of the problem. Here's the original question plus the second part of the question. The strength of Earth's magnetic field at the equator is approximately equal to 5e-5 Tesla. The force on a charge q moving in a direction...

Homework Statement The strength of Earth's magnetic field at the equator is approximately equal to 5e-5 Tesla. The force on a charge q moving in a direction perpendicular to a magnetic field is given by F = qvB, where v is the speed of the particle. The direction of the force is given by the...

Homework Statement An electron in a vacuum is first accelerated by a voltage of 48200 V and then enters a region in which there is a uniform magnetic field of 0.183 T at right angles to the direction of the electron's motion. What is the force on the electron due to the magnetic field...