Recent content by NkaujHelp

Homework Statement Find the total maximum induced current for the diamond-shaped metal loop that is moving at a speed of 10 m/s towards a uniform magnetic field of 0.8T. All four lengths equal 10 cm or 0.01 m. Homework Equations emf = -dΦB/dt ΦB=∫B*dA A = (1/2)bh The Attempt at a Solution I...

Homework Statement Prove that the total energy initially stored in the electric field inside the capacitor is equal to the total electrical energy eventually dissipated by the bulb. A 5 V DC power source charged the capacitor. The capacitor was then connected in series with a light bulb with a...

Homework Statement You have a 9V battery with an internal resistance of 1.5 ohms. If a 3 ohms load is connected to the battery, how much current will flow through it? When the 3 ohms load is connected, what potential difference will an ideal voltmeter read across the battery's terminals...

Okay. I understand the whole problem now. Thank you so much.

Well, if r = 0, and you divide by a 0, the value of V is undefined. But I still don't understand what's unique about that. I'm confused.

I don't understand what you mean by that. I don't get how the separation of the charges = 0 will give a potential energy that is infinitely negative. Can you please explain more. And yes, the particles I was talking about are point particles. My bad for not stating that.

Homework Statement From rest, how fast would two particles be going at the instant they collide ( if they attract) or when they're infinitely far apart (if they repel)? Explain carefully. Particle A: 3nC Particle B: -4nC Each has a mass of 7 mg. They are .05 m apart. Homework Equations ΔK +...

Homework Statement I'm trying to find the electric field at the origin <0, 0, 0> due to a quarter of a ring with +Q charges on it. The quarter of the ring lies on the +y-axis. Due to symmetry, the x-components of the electric field will cancel out, leaving only the y-component of the electric...

Homework Statement If two particles were allowed to move freely, how fast would they be going at the instant they collide or when they're infinitely far apart? Explain Carefully. There are no initial velocities given. The charges are -4 nC and 3 nC and each has a mass of 7 mg. Homework...

Homework Statement If a particular spring is compressed 10 cm, it can launch a marble horizontally at 75 cm/s. How much must it be compressed to launch the marble horizontally at 150 cm/s? Homework EquationsThe Attempt at a Solution My guess is that the spring force needs to be doubled in...

Homework Statement How much would a 1 kg mass weigh on the surface of a very dense planet with the same mass as Earth, but 1/2 Earth's radius? Homework Equations Eg(universe) = -G[(m1m2)/d^2] Earth's Radius = 3,959 mi Earth's mass = 5.97E24 kg The Attempt at a Solution If I plugged in those...

Homework Statement While driving your car at 20 m/s (about 45 mph) along a country road one night, you suddenly see a deer in your headlights. Your car's mass is 1200 kg, and the coefficients of friction between its tires and the asphalt road are 0.4 and 0.6. If you slam on your brakes and lock...

How do I do that?

For the net force, I did the force magnitude of Fnorm plus force magnitude of Fr minus the force magnitude of Fg, which is 8.5 N + 45.095 N - 50 N. That answer got me 3.595 N.

Homework Statement A person pulls on a rope attached to a 5 kg sled. The rope makes an angle of 30 degrees with the horizontal. Sled accelerates horizontally at 1.7 m/s^2. There is no friction. Homework Equations ma = Fnet mg = Fgravity The Attempt at a Solution Fnorm = Earth force up on sled...