Recent content by bsmm11

Homework Statement [SIZE="7"]◎ There are two solenoids with their axes parallel, one with a smaller diameter so that it fits inside the other. If the bigger solenoid has a current flowing in the clockwise direction (looked at from above) and the current is increasing in magnitude, find the...

Homework Statement Two parallel plates are separated by 10.0cm and a potential difference of 500.0V is maintained between them. What is the force on an electron between the plates? Homework Equations The Attempt at a Solution E = F / q = kQ / r2 V = kQ / r = Er = Fr / q F = Vq /...

Now I can solve the problems. Thanks everyone! :D p.s. Emily, the link is not valid. Could you give me a right one? I can solve the problems, but still I want to check it out.

OK.. so what I need is 2Θ, right? Then I got 38.2, and this is a bit off from 38.9. Where did this difference come from?

Homework Statement A single slit of width 1.50 * 10-6m is illuminated with light of wavelength 500.0 nm. Find the angular width of the central maximum.Homework Equations θ = λ / bThe Attempt at a Solution b = 1.50 * 10-6m λ = 5.000 * 10-7 θ = λ / b = 0.333 = 19.1° But the answer is 38.9°. All...

Homework Statement In calculus, the work done when a gas expands from volume V1 to volume V2 is given by W = ∫V2V1 P dV Use this expression to show that the work done by n moles of gas at temperature T during an isothermal expansion from volume V1 to V2 is W = nRT ln(V2/V1) Homework...

Homework Statement http://pds24.egloos.com/pds/201201/22/94/f0095594_4f1af1d126bf3.png [Fusion cycle of the SUN] Show that in the fusion cycle, the energy released is about 30 MeV. Homework Equations The Attempt at a Solution Can you do this without any relevant information!? If you have the...

When do they emit α, β+ or β- particle to become more stable? From what I've seen in the textbook, β- is emitted when there is an excess neutrons and β+ is emitted when there is a short of neutrons. Then when does an α-particle emitted?

Calculating the rest mass of Ra [simple!] Homework Statement Calculate the rest mass of 226/88 Ra.Homework Equations The Attempt at a Solution There are 88 protons and 138 neutrons. Therefore, (88*1.007276)+(138*1.008665)=227.8361u But the answer says 226.0254u. It also says 4/2 He is 4.0026u...

Homework Statement Explain why if your car is tuned to FM, it cuts out when you enter a tunnel but doesn’t if you are tuned to long wave reception. (λ of FM: 3m, λ of long wave: 1500m) Homework Equations The Attempt at a Solution Well, what I think is that.. As the λ of the long...

Homework Statement The work done by an external force to move a -8.0μC charge from point a to point b is 8.0 × 10-3J. If the charge initially at rest had 4.0 × 10-3J of kinetic energy ab point b, calculate the potential difference between a and b.Homework Equations V = W / qThe Attempt at a...

According to my textbook... Thermal energy is the kinetic energy of the component particles of an object and is measured in joules. Heat is the thermal energy that is absorbed, given up or transferred from one object to another. But later on the book there is a small chapter called...