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The energy stored in a capacitor

1. The energy stored in a capacitor measured in Jules is equal to the required work to charge the capacitor. The capacitor has a capacity "C" with a charge +q in one plate and –q in the other plate . The two plates have a separation "d." The movementof a small charge dq from one plate to another, it is necessary to execute a work dW. The expression is the following: C = q/V dW = V * dq dW = q/C*dq Equation 1. 2. To move a charge dq from one plate to another is required to execute work and part of ...

Solar energy harnessing through the use of solar panels installed in small homes presents better alternative to the hydroelectric provided through the national grid. While the use of solar panels may provide several advantages over the use of hydroelectricity, its usage presents several pitfalls to the user. It is imperative to investigate and outline the possible costs and advantages associated with the use of solar panels as a source of harnessing solar energy before installation is started. In most cases, the decisions concerning the installation of solar panels as the primary source of electricity are normally based on the ...

Abstract

The impact of salt on melting of ice can be described as utilizing atomic progression recreations. The harmony the point of solidification melancholy saw in the recreations is in great concurrence with trial information. The dynamic parts of liquefying are examined as far as the trading of water atoms amongst ice and the fluid stage (Brique, 1967). The ice/fluid harmony is a profoundly dynamic procedure with the incessant trade of water particles amongst ice and the fluid stage. The parity is irritated when ice dissolves and the softening continues in two phases; the restraint of the relationship of water ...

Sound, Waves and Electricity

Question 1 A. As a sound wave through a uniform medium, the wave will experience a gradual reduction in its 1. Power As a sound wave travels through a uniform medium, the amount of energy transmitted into the medium gradually diminishes. This energy which is also the power of the sound wave too diminishes gradually because amplitude in a sound wave is a maximum which diminishes gradually. The speed and frequency of a sound wave travelling through a uniform medium remains constant as the speed and frequency of sound waves are determined by the properties of the medium and ...

Introduction

Suspension bridges connect roadways between two land masses by links, ropes or cables hung from two large towers. These towers bolster most of the weight as pressure presses down on the deck of the suspension bridge and after that goes up the links, ropes or binds to transfer pressure to the towers. These bridge towers then disseminate the pressure directly to ground. The metal links on the suspension bridge, then again, have to bear all the bridge’s tensional forces. These cables are suspended across level planes between the two widely separated anchorages. Span docks are basically strong rock ...

Objective: Describe the linear motion of objects, and derive characteristics of that motion, by using the concepts and mathematics of kinematics.

Knowledge:

Questions What are the characteristics of an object in motion? What vocabulary can be used to discuss these characteristics? How can we describe these characteristics with standardized units? Key PointsEnsure understanding of displacement, velocity, time, and acceleration. Make sure students can convert between systems of measure.

Resources

Vocabulary: http://www.physicsclassroom.com/class/1DKin/Lesson-1/Introduction (And subsequent topics of Lesson 1) Units of Measure (Section 1): http://www.cwu.edu/~acquisto/kinematics.htm Introduction to Kinematics (Video): http://ed.ted.com/on/0N9oysTL Comprehension: Questions How can we translate certain characteristics of an ...

An AC Circuit has its frequency resonance measured in 30 times. The mean of the measured data is 2160 Hertz and the standard deviation is 88 Hertz. The data is normally distributed. Find the 70%, 80%, and the 90% confidence interval for these population mean. Also, comment on the number of measurements expected to lie within the intervals.

Solutions

Given that; The formula for determining the confidence interval (C.I) is given as: 1

For 70% confidence interval, the value of is 1.04

Therefore, the 70% confidence interval is (2089.29, 2122.71)

For 80% confidence interval, the value of is 1.28

Therefore, the 80% confidence interval is (2085.43, 2126.56)

For 90% confidence interval, the value of is 1.645

Therefore, the 90% confidence interval is (2079.57, 2132.42).

Comment

Confidence limits are ...

Description of how MRI sequences spatially encode nuclei in the read and phase direction

Differences that occur in an induced magnetization in biological tissues in a magnetic field cause image contrast in MRI. A signal measured by the receiver coils is the integral of an induced magnetization over the whole imaged volume. To construct a three-dimensional distribution of magnetization, a spatially varying field pattern is generated in the volume, such that voxels at various parts generate a signal that is tagged with data on the location. Standard techniques for spatial encoding in MRI create high-quality images. In magnetic resonance imaging technique, two main methods (SVD MRI and SMASH MRI) are used to modify ...

Assignment about MRI Physics

The magnetic moment is considered as a vector quantity whose direction is perpendicular to the current loop in a right-hand-rule direction. The magnetic moment of nuclei are the magnetic moment of the nucleus that arises from a spin of protons and neutrons. A magnetic moment of nuclei is dipole moment – the quadrupole moment causes a shift in the hyperfine structure (Mangrum, 2012). Nuclei with non-zero spin have a non-zero magnetic moment while that have zero spins have zero magnetic moments. Different isotopes of an element have a different nuclei magnetic moment. A nucleus with an even number of protons ...