Allowed to solve only one question. I have solved first 3.
PHYS 1214 General Physics II Exam 2 1: How much work is done to move a proton from a potential of 5 V to a potenti...
1: How much work is done to move a proton from a potential of 5 V to a potential of 20 V... a) In ev? b) In Joules? c) Was the work done by the field, or by an external force? 2: What potential is needed to accelerate a proton to 50,000 m-s? 3: What potential is needed to accelerate an electron to 50,000 m-s'? 4: Given a breakdown voltage for air of 3.0x 10* V-m1, how close would you...
Show your work! A 25- mu F capacitor charged to 50 V and a capacitor C charged to 20 V arc connected to each other, with the two positive plates connected and the two negative plates connected. The final potential difference across the 25- mu F capacitor is 36 V. What is the value of the capacitance of C? What is the final energy stored in the 25- mu F and the unknown capacitor C? The boundary shown is that...
Help with Part C. Please show all your work. I have already tried d=V/E= 7/[(2.9x10^-9)/2(8.85x10^-12) A very large sheet of insulating material has had an excess of electrons placed on it to yield a surface charge density of -4.00 nC/m2. (a) As the distance from the sheet increases, does the potential increase or decrease? (e) increase O decrease Can you explain why without any calculations? The electric field points in the direction of increasing potential while pointing away from negative...
How much work must we do on an electron to move it from point A, which is at a potential of +50V, to point B, which is at a potential of -50V, along the semicircular path shown in the figure? Assume the system is isolated from outside forces (e = 1.60 times 10^-19C) 1.60 times 10^-17 J -1.60 times 10^-17 J 1.6 J -1.6 J This cannot be determined because we do not know the distance traveled. If an electron...
cswebdav/pd-203 1099-dt-content-rid-127647332/courses/201 920-PHYS 1402010/Homework%281962 PHYS 1402 (General Physics II) Homework 2 1. When we defined the electric potential, we said that we take a point in- finitely far away to have a potential of zero when dealing with a finite distribution of charges. Why might this be a bad approximation for a non-finite distribution of charges? 2. Consider a dipole centered at the origin of a cartesian coordinate system. The dipole is aligned with the x-axis with the positive charge...
VERSIUN -B- nen a positive charge moves opposite to the direction of the electric field, A) the field does positive work on it and the potential energy increases. B) the field does positive work on it and the potential energy decreases. C) the field does negative work on it and the potential energy increases. Motion D) the field does negative work on it and the potential energy decreases. 2) A strong lightning bort transfers about 40 C to Earth. How...
1. Parallel plates. You have two equal but oppositely charged parallel conducting plates, separated by 10 cm. A voltmeter shows that the potential difference between the plates is 500 V. (a) Which is at a higher potential, the positive or negative plate? (b) How big is the electric field between the plates? (c) You let go of an electron next to the negative plate. How much work does the electric field do in moving the electron to the positive plate?...
answer all multiple choice please 1 12. A tiny spherical water drop has a charge of 3.00 X 10'15C. How many excess electrons are on the drop? b.2.25X10c. 1.6X 01 d. 1.87 X 10 13. A wire contains a steady eurrent of 0.75 A. The charge that passes a cross section in 3 s is: e. 3.35 C d, 225 С b, 6.4 x 10-1, С с.1.55 С a32x10", С 14. An electric field with a magnitude of 5 X...
1. A positive ion of charge 1 uC with a weight of 2 x 10-6 kg is released from the positive plate of a capacitor. When it reaches the negative plate, it has achieved a velocity of v = 100 m/s. Calculate the following: (6 marks total) a. What is the potential difference between the two plates? (2 marks) b. If the distance between the two plates is 1 nm and filled with vacuum, and the dimensions of the plates...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...