A proton follows the path shown in (Figure 1). Its initial speed is v0 = 2.9×10^6 m/s. Part A What is the proton’s speed as it passes through point P? Express your answer to two significant figures and include the appropriate units.
Part A To what potential should you charge a 3.0 μF capacitor to store 4.0 J of energy?
Question 1 Two point charges of equal magnitude are 2.6cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 114NC. Find the magnitudes of the two charges. (NOTE: Enter your answer in picocoulombs, pC.) Question 2 Four point charges, each of magnitude are located at the corners […]
Yalda’s Notes: My Notes: Example Calculate the work done in the moving this test charge the distance r Coulomb’s Law (for point charge) Potential Energy Example 2 So, here, Q’s potential energy changed by “Electric Potential” Then we can write Example (Capacitor) Calculate the […]
Question 1 Two identical negative charges are located on the y-axis, at y = +4m and y = -4m. A positive charge of 0.25C is placed on the x-axis at x = 2m. What direction does the net force on the proton point? Select one: A. Along the -x-axis B. At a 45 degree angle […]
Part A In the figure, which point, A or B, has a higher electric potential? (Figure 1) Part B What is the potential difference between A and B? Express your answer using two significant figures.
In the diagram below, there are two charges of +q and −q and six points (a through f) at various distances from the two charges.(Figure 1) You will be asked to rank changes in the electric potential along paths between pairs of points. Part A Using the diagram to the left, rank each of the […]
Charge Density Line Charge density ( ) z = distance from the wire. of an “infinite” wire Example C is deposited onto a 75cm long wire. Calculate at 3cm from the wire. L = 0.75m z = 3cm = Concept of a surface charge density Example […]
Storm clouds may build up large negative charges near their bottom edges. The earth is a good conductor, so the charge on the cloud attracts an equal and opposite charge on the earth under the cloud. The electric field strength near the earth depends on the shape of the earth’s surface, as we can explain […]
Large electric fields in cell membranes cause ions to move through the cell wall. The field strength in a typical membrane is . Part A What is the magnitude of the force on a calcium ion with charge +e? Express your answer using two significant figures.