A frictionless and massless bar is pivoted a D. To be in rotational equilibrium a 200 N force must act 400 N 100 N A C F В D E 200 N 300 N © 2003 Thomson - Brooks/Cole Down at D O Up at B Down at E

Q: 17.2 (a) Two protons in a molecule are 3.90  10-10 m apart. Find the electric force exerted by one…

A: Given information: Here, qp and mp are the charge and mass of the proton (standard values) and r is…

Q: Determine the tension developed in each cord required for equilibrium of the 20-kg lamp. Determine…

A: Given Mass of lamp, m=20 kg Standard Quantities g=9.8 m/s2

Q: Write 10 applications of half subtractor

A: Half subtractor is the most essential combinational logic circuit which is used in digital…

Q: 1.175 uF is not an option in the multiple choice for this question. Please redo answer.

A: Given : Capacitance , C = 4.7 uF  Inductance, L = 5 mH  Find : new value of capacitance needed to…

Q: O = 50 = 50° B If A = 5 unit and B =quniA Calcu late : (a) A.B and B.B. (6) AxB and Bx. (c) AxA

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Q: Which one of the following equations (see figure) does not comply with Kirchhoff's junction (A) 14 +…

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Q: hello what sort of calculator did you use? i am using ti 84 and ti 89 still not getting the answer…

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Q: Increasing the current going to an LED: [Choose all that are correct]     Can cause the LED to…

A: Given, Current supply to LED is increased. Statements regarding LED

Q: An aircraft wing composed of carbon fibre-reinforced epoxy is connected to titanium forging on the…

A: In an aircraft wing, the composition of wing of carbon fibre-reinforced epoxy is connected to…

Q: A = 1.05i + 1j + 1.08k B = 0.98i + -0.81j + -0.92k What is the angle (in degrees) between the bonds…

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Q: The neutral current in a perfectly balanced system is equal to zero.  True  False

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Q: In which of the following materials electrons can move very easily from one atom to another? О а. а.…

A: In conductive materials, the electrons can move easily but in insulative materials, the electrons…

Q: 1. is an example of a semiconductor material a. silicon b. gold c. silver d. carbon 2. Omar…

A: 1 ans:- a ) silicon :- silicon is a semiconductor.                  b) gold :- it is conductor…

Q: Niobium metal becomes a superconductor when cooled below 9 K. The permeability of free space is…

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Q: I,= 2A in エ,=4A in ーlm

A:

Q: Which statement best describes why some materials are not magnetic?   Magnetic materials have many…

A: The magnetic field is produced by the orbital as well as spin motion of electrons. However, in a…

Q: Choose the correct alternative:(a) Alloys of metals usually have (greater/less) resistivity than…

A:

Q: The units of are: O m?/c2 N. m?/c2 ON-m/c? O N?c2 O N2. m?/c2

A: The electrostatics force between the two charge q1 and q2 is given by…

Q: 10. On which level within this parallel plate apparatus would an electron have the most potential…

A: Introduction: The given system forms the parallel plate capacitor whose energy can be obtained as…

Q: What two kinds of rotational motion are exhibited by electron in an atom?

A: Similar to the motion of the Earth, there are also two types of motion of an electron in an atom…

Q: Some tools contain permanent magnets. What two types of materials could these tools pick up? O A.…

A: Which doesn't loose their magnetism and retains it for long time.

Q: Materials such as aluminium and silver are .. O A) good electrical insulators O B) superconductors…

A: Materials such as Aluminium and silver are good conductors of heat and electricity because they have…

Q: 07 The component along an arbitrary direction n, with direction cosines (n,.n, .n,),of the spin of a…

A: The operator to measure spin along any arbitrary axis is defined by S^n=h2nxσx+nyσy+nzσz Where…

Q: Mass Data and Calculations Table M1 (g) M2 (g) M3 (g) M4 (g) M(g) M(kg) 12 12.112.2 12 Aluminum 63.8…

A: In this question we have to find the mean of different quantities given in the question. Please give…

Q: B=i-3)-k A = 3i - j+k tA-B+č=0 l (C) asiall asa

A: When we add two or more vectors we add x component to x ,y component to y  and z component to z.

Q: 7 N 7 N 18 N

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Q: 90 ka 2.1 ka B= 80 fe = 15.30 10 ka 250 a

A: Given Data : The value of Re=15.3Ω

Q: In which of the following materials electrons cannot move from one atom to another? O a. wood O b.…

A: Insulators are materials in which electrons are tightly bounded and cannot go from one atom to…

Q: find C=A+4B if A=(3i-j+2k) and B=(i-2j+k)

A: Given: Vector A=3 i-j+2k Vector B=i-2j+k

Q: Figure E21.22 shows the bonding of cytosine and guanine. The O—H and H—N distances are each 0.110…

A: q=Charge=1.6×10−19 CrNH=Distance between nitrogen and hydrogen=(0.3−0.11)=0.19 nmrHN=Distance…

Q: Determine the tension developed in each cord required for equilibrium of the 20-kg lamp. Determine…

A: At joint D, the free body diagram is

Q: A transformer for a transistor radio reduces 120 V ac to 9.0 V ac. The secondary contains 30 turns…

A: Given value--- Primary voltage = 120 V. secondary voltage = 9 V. No. of turns in secondary coil =…

Q: Some tools contain permanent magnets. What two types of materials could these tools pick up? A.…

A: A. Materials that contain other magnets

Q: Refer to the table below. Which material has the least ability to conduct current? Type of Materials…

A: Material with least value of electrical conductivity has the least ability to conduct current.

Q: 12 N 15 N 24 N 3120 N 3 60 N 20N 25 N b

A: 12 ohm & 24 ohm are parallel Equivalent of 12 ohm & 24 ohm = (12×24)/(12+24) = 8 ohm    60…

Q: If Å = 6î + 4ĵ – k and B = 7î- ĵ + 8Ê , then R = ÃxB ? A. R = 13î + 3j + 7Êk В. R - 421 — 4) — 8k с.…

A: A→=6i^+4j^-k^B→=7i^-j^+8k^ For cross product the rule is:…

Q: 15. A well-tested and widely accepted description of what we find always happening in the same way…

A: All the questions mentioned here are defination of the terms so no further explanation is needed for…

Q: In which of the following materials electrons cannot move from one atom to another? a. silver O b.…

A:

Q: Superconductors are substances which   A. conduct electricity at low temperature B. offer high…

A: Superconductors are substances which conducts electricity without resistance.

Q: D (cm) |A(cm?) Length (cm) I (A) Voltage Res. (2) P(Qm) (mV) Brass 337 5,3 0,1016 0,00811 24 Соpper…

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Q: Materials in which electrons cannot move from one atom to another are O a. good conductors а. O b.…

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Q: For 3-dimensional rotational motion of an electron, the total angular momentum... depends on l and…

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Q: Materials in which electrons cannot move from one atom to another are O a. semiconductors O b.…

A: Material in which electron cannot move from one atom to another is

Q: My physics class has turned to online due to the COVID-19 and I am having trouble with some of the…

A: Given: Mass of gold (m) = 500 g. Specific heat of gold (c) = 0.129 J/g ̊C Latent heat of melting…

Q: In Davy's safety lamp a copper gauze is used. Why?

A: Davy’s safety lamp was used in flammable environment such as coal mines. The lamp consists of a…

Q: Insulators are defined by their inability to let electrons transfer easily. What does this allow…

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Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.