Share
Explore BrainMass

Applied Physics

Applied physics, also known as engineering physics, is the connecting study between physics as a pure science, mathematics and engineering. Fundamental physics is combined with problem solving and engineering skills to brooded applications. This interdisciplinary knowledge is designed for continuous innovations occurring with technology.

The term “applied” is distinguished from “pure” by the motivation and nature of the research. Applied physicists conduct research to develop new technologies or solve engineering problems by the application of basic scientific principles; whereas physicists conduct research to prove new theories and discover new abstract concepts. For example, Einstein’s special theory of relativity was discovered by pure physicists. The design of fiber optic technology is an applied physics discovery.

The field of applied physics has a wide variety of research areas. Astronomy, Astrophysics and Relativity and Condensed Matter Physics and Optics are just a few examples of the vast range of research areas. These research areas are concerned with the potential for new technology or practical applications.

 

 

Title Image Source: Wikimedia Commons

Categories within Applied Physics

Medical Physics

Postings: 6

The application of physics concepts and methods in medicine.

Computational Physics

Postings: 19

The study of numerical algorithms to solve quantitative theory which already exists.

Ohm's law questions

QUESTIONS: 1. Do your calculated values of R1 and R2 compare favorably with the stated values of the resistor? How do you account for the difference? 2. How do stated and measured values of R1 and R2 compare with one another? See attached file for data.

Capacitor Charge and Change in Dielectric

An air-filled capacitor is connected across a 200-V voltage source. a) If the air-gap between the two plates is 0.5 mm and the area A of the plates is 0.2 m^2, what is the capacitance? b) After the source fully charges the capacitor, the capacitor is immersed in transformer oil, whose dielectric constant is k = 4.5. What is

Comparisons of Resistance

EXERCISE: The instructions for an electric hedge clipper suggest that a 20-gauge cord with a cross-sectional area of 5.2 x 10-7m2 extension cord can be used for distances up to 35m, but a thicker 16-gauge with a cross sectional area of 13 x 10-7m2 cord should be used for longer distances, to keep the resistance of the wire as s

Kinematics: Moving Elevator Question

An elevator at a construction site moves upward with a velocity of v = 6 ft/s. At the instant shown, the floor of the elevator is at a height of y = 120 ft above the ground when a pebble is dislodged from the floor. Find the position of the floor of the elevator when the pebble strikes the ground. Diagram and question

Second derivative at the point of stable equilibrium

To insure a point of stable equilibrium, the necessary and sufficient conditions on the potential energy of a physical system, U = U(x), are that dU/dx = 0. What does the second derivative at that point have to be?

Finding the total charge on a semicircular disk

6. You have a flat, semi-circular (half) disk of radius a in the x-y plane. (Like a DVD that has been chopped in half) It has a nonuniform charge density (sigma = sigma0cos(phi) (where phi is the usual azimuthal angle in the x-y plane, as shown, and sigma0 > 0) i) Compute the total charge on this disk (in terms of givens

Electric potential energy: Work and Total Energy

4. A very crude model for a neutral water molecule is shown in the figure, a negative "O" and two positive "H's". The geometry has been simplified to make the math easier. As usual, assume V(infinite)=0. b) If you bring in a positive test charge (q') from infinite to the origin (the point midway between the two positive hydro

Uniform charge density over a surface

3. The figure show an edge-on view of a surface (in the middle) with some surface charge density sigma on it. The E-field just above the surface is E = +2z[N/C]. Just below the surface it is E = -2z[N/C] What is the charge density sigma on the surface?

Vectors: Magnitude and Angles

Two vectors lie in the xy-plane. Vector 1 has a magnitude of 3.00 m and makes an angle with the x-axis of 32.0 degrees when measured counterclockwise from the +x-direction. Vector 2 has a magnitude of 6.00 m and makes an angle of 145 degrees when measured counterclockwise from the +x-direction. Find the magnitude and angle with

MCQs: Physics

1. 0.00325 x 10-8 cm equals A. 3.25 x 10-12 mm B. 3.25 x 10-11 mm C. 3.25 x 10-10 mm D. 3.25 x 10-9 mm 2. You measure the length and width of a rectangle to be 1.125 m and 0.606 m, respectively. You calculate the rectangle's perimeter by adding these and multiplying by two. Your calculator's display reads 3.462. To t

dynamics

The vehicle s used to transport supplies to and from the bottom of the 25-present grade. Each par of wheels one at A and the other at B has a mass of 140 kg with a radius of gyration of 100 mm. The total mass of the vehicle s 520 g. The vehicle is released from rest with a restraining force T of 500 N n the control cable which p

Relativity problem regarding tensors

The question is attached along with relevant course notes. Please let me know if you think the bid is insufficient or you have any other questions - thanks for your time.

Analyze the motion of a symmetric top thrown in air

Problem: Analyze the motion of a symmetric top (I_1=I_2>I_3) thrown into air. (a) First assume the top is thrown with initial angular velocity w_0 along the axis of I3 and initial linear velocity v_0. What are the total kinetic energy and the total angular momentum? (b) Next, throw the top into air with initial angular vel

Gravitational force

A 21.0 kg sphere is at the origin and a 5.00 kg sphere is at (x,y) = (20cm,0cm). At what point can you place a small mass, such that the net gravitational force on it, due to the sphere's is zero?

Momentum, Impulse, and Collisions

Starting at t= 0, a horizontal net force F = (0.280 N/s)ti + (-0.450 N/s^2)t^2j is applied to a box that has an initial momentum p= (-3.00 kg.m/s)i + (4.00 kg.m/s)j. What is the momentum of the box at t= 2.00s?

Force

The coefficients of static and kinetic frictions for plastic on wood are 0.50 and 0.40, respectively. How much horizontal force would you need to apply to a 3.0 N plastic calculator to start it moving from rest?