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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.



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Categories within Applied Physics

Medical Physics

Postings: 5

The application of physics concepts and methods in medicine.

Computational Physics

Postings: 18

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

Cellular Phone vs. Microwave Oven

The average output power of a GSM cellular phone is 1.0W when it is "ON". The phone can be treated as a point source of E-M waves emitting spherical waves. (a) Calculate the intensity and peak electric field E(max) of the phone's E-M waves in your brain, which is about 5.0cm away from the phone when it is applied directly ag

Parameters of a Transformer

An ideal step-down transformer is used to convert the AC voltage from the power line at 120V to 5.0V in an adapter for your laptop computer. (a) The primary coil has 2000-turns, how many turns are in a secondary coil? (b) If the average power consumption of your laptop is 80W, what is the average current in the primary coil

Inductive Circuit Analysis

A 400-turn solenoid is 25-cm long and 3.0-cm in diameter. (a) What is the inductance of the solenoid? (b) The solenoid is then connected a circuit as shown in the figure, where e0=24.0V, R1=6.0ohm, R2=4.0ohm, R3=8.0ohm. Find current I1, I2 and I3 immediately after the switch is first closed. (c) Find I1, I2 and I3 after

Ohm's Law Problems

Table 1. Resistor values for stated value and measured value for R1 and R2 in Ohms. R1 (Ω) R2 (Ω) Stated Value 360 180 Measured Value 362 184 Table 2. Measured Currents and Voltages for series and parallel configuration with calculated resistances. Configuration I (mA) I1 (mA) I2 (mA) V (V) V1 (V) V2 (V) R (

Comparisons of Resistance

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 small as pos

Significant Figures and Boat Travel Distance

See the attachment. 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 dis

dynamics and inertia

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

Pressures problems are featured.

1.) The water in the tank is at a guage pressure of 216,302 Pa If the bottom of the tank has an area of 0.6m^2 what is the force on the bottom of the tank. 2.) A Viewing window in an aquarium is 62 inches wide and 56 inches high. If the average pressure inside the water tank is 16psi. What is the outward force on the wind

Applied vector and pulley problems

(See attached file for full problem description) 11. Consider two objects whose position vectors are given by r1 and r2 and whose momenta are given by p1 = m1v1 and p2 = m2v2 respectively. Show that in the special case that the center of mass of the two bodies is at rest at the origin (that is P = p1 + p2 = 0, and the positi

Physics help

(See attached file for full problem description) 1. A constant-volume gas thermometer is calibrated in dry ice (-80.0°C ) and in boiling ethyl alcohol (78.0°C ). The respective pressures are 0.900 atm and 1.635 atm. (Note that we have the linear relationship P = A + BT, where A and B are constants.) (a) What value of ab

Water wave/Deep water waves

A water wave is called a deep-water wave if the water's depth is more than 1/4 of the wavelength. The speed of a deep water wave depends on its wavelength: v = sqrt((g.lambda)/2pi). Longer wavelengths travel faster. Let's apply to this to a standing wave. Consider a diving pool that is 5.0 m deep and 10.0 m wide. Standing w

Force and Angle

18. the leg and cast in picture (attached) weigh 220N (w1) Determine the weight w2 and the angle needed so that no force is exerted on the hip joint by the leg plus the cast. 41. The coefficient of static friction between a 3.00 kg crate and the 35.0 degree incline it sits on is 0.300. What minimum force (F) must be appl

Atwood Machine

Find the equation of motion for the Atwood machine depicted in the diagram.

What is the hydraulic force needed to lift a car?

What force must be applied to a small cylinder piston with a diameter of 0.32 m to lift a car weighing 12,000N that is supported by the piston in a large cylinder that has a diameter of 1.4m? Assume that there is a closed chamber in the common between the two pistons and that the chamber is filled with hydraulic oil.

Rotational kinetic

A horizontal 808 N merry-go-round is a solid disk of radius 1.56 m, started from rest by a constant horizontal force of 50.5 N applied tangentially to the edge of the disk. Find the kinetic energy of the disk after 2.96 s.

Elongation of the rod

A force of 1.0 * 10^3 N is applied to a steel rod of length 1 m and a circular cross-section of area 10 cm^2. Find the elongation of the rod. Young's modulus for steel is 2.0 * 10^11 Pa.

Force of friction and pulling apart two books.

Two identical books each with k pages are placed on the table in a way that the each page of book A is between the pages of book b. The high half of book B is on top of book A. Given that 1) the coefficient of static friction on the surface of card A is mu; 2) Each page of the book has a mass of m; 3) Book A does not move f

Force and Center of Mass

A person holds a bowling ball in his hand with his forearm horizontal. The bowling ball has a mass of 5.10 kg and the mass of the forearm is 1.50 kg. The bicep muscle is attached to the bone of the forearm at a point d=3.00 cm from the elbow joint and the bowling ball is L=35.0 cm from the joint. Model the center of mass of the

Euler Equation

Please see the attached PDF file. I would prefer a solution in PDF format. Thank you!

Two springs can be combined in series or in parallel

SEE ATTACHMENT #1 for a diagram of the springs and both arrangements. Spring A has force constant kA= 60 nt/m. Spring B has force constant kB= 40 nt/m. The two springs attached end to end form a series combination with force constant Ks. The two springs attached side by side so that a force applied to the ends stretches bo

Find the speed of the bullet after it has passed through a block.

A 3gm bullet with a speed of 300m/sec is fired on a 400gm block initially at rest. The bullet passes through the block and as a result the block begins to move with a speed of 1.5m/sec in the original direction of the bullet. Find the speed of the bullet after it has passed through the block.

Guitar strings' lengths, relative densities and frequencies

Given two guitar strings' lengths and relative densities, find information about their frequencies and tensions. The thinnest string on a certain guitar has a linear density one fifteenth the linear density of the thickest string. Both strings are the same length, L= .64 m. NOTE: On a musical scale a note one octave higher

Velocity, conservation of momentum, force, force of gravity

1. A ball is thrown in the air with enough force so that it goes straight up for several seconds. a. What is the velocity of the ball 1 sec before it's highest point? b. What is the change in velocity during this 1 sec interval? c. What is the velocity 1 sec after it reaches it's highest point? d. what is the change in veloc