R1=1 0 R3=3 0 ww- 6V + R2=2 0 + 9V ww

Q: A copper bar is 3 m long at 20°C and has a coefficient of linear expansion of 17×10^-6 per C°. What…

A:

Q: A refrigerator has a coefficient of performance of 4. If the refrigerator absorbs 30 cal of heat…

A: Given: Coefficient of performance, COP=4 Heat absorbed, Qc=30 cal To find: Heat expelled, Qh=?

Q: The leg and cast in the figure weigh 220N (w;). Determine the weight w; and the angle alpha needed…

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Q: One litre of a certain fluid weighs 8N. What is its specific volume?

A: Given value--- volume = 1 l. weight = 8 N. We have to find--- specific volume?

Q: A 2x103 g metal sphere makes an elastic collision with another metal sphere at rest and continues to…

A: Collisions are of 2 types which are elastic and inelastic. Kinetic energy is conserved in elastic…

Q: 4-The stress - strain relationship become nonlinear in the elastic region. True O False

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Q: A total of 105 J of work is done on a gaseous refrigerant as it undergoes expansion. If the internal…

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Q: 10. Red light with a vacuum wavelength of 620 nm is incident from air on a piece of glass (n = 1.52)…

A: wavelength of red light = 620 nm refractive index of glass = 1.52 refractive index of thin film =…

Q: 8. How would you describe half-life?

A: This question belongs from radioactivity.

Q: A combination of three resistors R1, R2 and R3 in series is connected across a voltage source Vr.…

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Q: A uniform disk is mounted to an axle and is free to rotate without friction. A thin uniform rod is…

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Q: 1. The 3500 KN load is applied to wedge B. The coefficient of static friction between A and Cis…

A: As per our guidelines  we are supposed to answer only one question. Kindly repost other question as…

Q: Two forces have the same magnitude F and they act on the same body. Sketch the free-body diagram and…

A: Given, Two forces have the same magnitude F and they act on the same body.

Q: a big truck is pushed but it did not move; therefore there is no a friction acting on the truck.…

A: Given: The surface is frictionless. The big truck is pushing.

Q: Two charges Q1(+2.00μC)Q1(+2.00μC) and Q2(+2.00μC)Q2(+2.00μC) are placed symmetrically along the…

A: Given:-   Two charges Q1 = +2.00μC Q2 = +2.00μC both charge  placed symmetrically along the x-axis…

Q: A point charge for which Q combined fields E = 100ax the charge velocity at t = vector showing the…

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Q: One end of a horizontal rope is attached to a prong of an electrically driven tuning fork that…

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Q: if the absolute refractive index of glass is 1.5 and that of water is 4/3, find the refractive index…

A: refractive index of glass = 1.5refractive index of water = 43

Q: A 1000 kg car is traveling on a curve having a radius of 300 m at a velocity of 100 kph. What is the…

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Q: A battery is supplying electrical power to a single resistor R. If the total current in the circuit…

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Q: Problem 3 A L75 kg puck is moving in a circular path on a frictionless, lat surface. The puck is…

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Q: A Centigrade and a Fahrenheit mercury thermometer are of identical size. At what temperature will…

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Q: A 0.25-kg block oscillates on the end of the spring with a spring constant of 200 N/m. What is the…

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Q: 5. A pipe that is open on one end produces a harmonic frequency of 441 Hz. The next harmonic happens…

A:

Q: work done by an external agent for first one sec is

A: Given; Determine the workdone by an external agent for the first one sec ?  Where, Displacement of a…

Q: Tha battery with unknown emf and internal resistance r is supplying electrical power of 18 mw to a…

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Q: A long, straight, conducting wire carries a current of 1.50 A. A second, identical wire is parallel…

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Q: a. Solve for the electrical force on the 7 C charge if it is 5 m from -2 C charge. b. When a piece…

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Q: 3. The magnetic field inside a superconducting solenoid is 4.5 T. The solenoid has an inner diameter…

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Q: 1. Kara Less was applying her makeup when she drove into South's busy parking lot last Friday…

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Q: 1) Are the wave patterns for various values of Δω and Δk same? If not, why? 2) Comment on the Phase…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: In the figure below, what is the volume flow rate in the lower opening (Point 2) which has diameter…

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Q: On an old 45 rpm record, the beginning track is 8 cm from the center and the end track is 5 cm from…

A: Given:-  On an old 45 rpm record,  The beginning track is 8 cm from the center.  The end track is 5…

Q: What is the direction of the magnetic force on a positive force if V= downward; B= out of the page?

A: We need to find the direction of force on a positive charge moving in the given magnetic field.

Q: CLM R The Newbie Archer A school introduced the sports of archery so they can send players to…

A:

Q: work done on a crate is 5000.00 J as it was pulled along a 20.0-m pavement with a force of 3000.00 N…

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Q: V. ASSESSMENT (Time Frame: Day 5) (Learning Activity Sheets for Enrichment, Remediation, or…

A:

Q: Jose and Joshua left the campus at 4:00 pm. Jose is riding a motorbike at the rate of 45 kph due…

A:

Q: A circular racetrack of radius 300 m is banked at an angle of 15°. If the coefficient of friction…

A:

Q: A boy pulls a sled with a force of 10 lb for 100 ft. The rope attached to the sled is at an angle of…

A: Given: force applied by boy, F = 10 lb = 10(4.44822) = 44.4822 N  (since 1 lb force = 4.44822 N)…

Q: 2) A solid cylindrical steel column is I2.S m long and 0.20 m in diameter. Young's modulus for this…

A: Young's modulus is define as stress/strain

Q: Please provide an FBD illustration. Thank you. An object in a horizontal surface was moved by…

A: applied force = 8i^ + 5j^ N displacement = 9 m to right = 9 i^ m

Q: The 300-N block in the figure is at rest on the rough horizontal plane before the force P is applied…

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Q: .Suppose you are looking at H-R diagrams of two similar star clusters. The most luminous main…

A: Using HR chart , We can say that  luminous directly proportional to diameter.

Q: R R3 R5 3 kn 2 kn 1 kn R28 kn R27 kn Rs6 kn 111 V Rtot = I tot =. AV1= I2=. AV2=. I3=. AV3=. 14=.…

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Q: A' D ANSWER: The 3-kg collar B rests on the frictionless arm AA'. The collar is T = 6.0 N N = 187.5…

A: Mass of collar B =3kg Linear velocity=0.2t² Time=5sec Radius=0.4m

Q: 4) A uniform 135-gram meter stick (length of 1 meter) rotates about an axis perpendicular to the…

A: Given Mass of the meter stick is m=135 g=0.135 kg Length of the stick is l=1 m Angular speed of the…

Q: Part A Silver has a Fermi energy of 5.48 eV. Calculate the electron contribution to the molar heat…

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Q: The statement F = q(E + v x B) is called the O Maxwell-Ampere force law O Tesla force law O…

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Q: What are the pros and cons of nuclear fission?

A: Nuclear fission: When the nucleus of an atom splits into lighter nuclei through a nuclear reaction…

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.