Before liquid crystal display LCD computer and television screens, the screens were cathode-ray tube CRTS, in which a bean of electrons was shot towards a Phosphorescent screen at high speed and deflected by electric fields in order to direct the beam to the right place on the screen so that it would form the picture. In a typical television, the speed of the electrons is 1 x10^8 m/s. If the television set is placed so that the CRT beam is horizontal heading east in a place where the earths magnetic field is 5×10^-5 and points horizontally northward what will be the magnetic force on the electron?

Q: An electron moves horizontally with a speed of 1.55 X10^6 m/s between two horizontal parallel…

A: The horizontal speed of the electron in the horizontal direction is vx=1.55×106 m/s The length of…

Q: Particle A has a charge of –10µC and a mass of 0.001kg. Particle A starts in a position where the…

A: Given Data Charge of particle A is qA=-10 μC=-10×10-6 C Mass of the particle is m=0.001 kg Potential…

Q: When an electron circles in a uniform circular motion, which describes its kinetic energy? It…

A: In the case of uniform circular motion, the Direction of velocity changes but the magnitude of…

Q: After a proton with an initial speed of 1.50 x 10^5 m/s has increased its speed by accelerating…

A: Work done by the potential difference is,

Q: Two electrons are initially separated by 5.0 X 10^-8 m. When they are both released, they fly apart.…

A: distance (d) = 5×10-8 m charge (q) = -1.6×10-19 C

Q: REFERENCE QUESTION: An electron (-q = -1.602 x 10-19C) moves along a straight line from point a to…

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Q: In a television picture tube, electrons strike the screen after being accelerated from rest through…

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Q: the objects mass is 22.3 kg and you initially put the boxes of protons and electrons 39 m apart. Now…

A: Determine the number of protons and electrons in the box as follows.

Q: Some forms of tumors can be treated using proton therapy. The physics idea behind this biomedical…

A: We would use conservation of energy. As  Decrease in potential energy of proton=increase in KE of…

Q: An electron is projected with an initial speed v, = 2.95 x 105 m/s directly toward a very distant…

A:

Q: Two parallel plates separated by distance of 10cm have a potential difference of 20V between them.…

A: Given: The separation between plates is 10 cm. The potential difference between them is 20 V. The…

Q: Particle A has a charge of 10HC, a mass of 0.001kg, and starts at rest. The initial electric…

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Q: An electron has a speed of 0.75c and moves in the opposite direction with respect to the direction…

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Q: Suppose an electron (q= -e= - 1.6 x 10¬19 C.m =9.1 x 10-3 kg) is accelerated from rest through a…

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Q: Calculate the final speed of a free electron accelerated from rest through a potential difference of…

A: Given:  Potential difference,V = 100 V

Q: A 0.0012 C charged cart is initially at rest on a ramp (1.1 m away from the bottom of the ramp). At…

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Q: the objects mass is 70.0 kg and you initially put the boxes of protons and electrons 45 m apart. Now…

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Q: Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED…

A: Write the given values with suitable variables. d=1.62 cm=0.0162 mV=23 kV=23×103 V Here, d denotes…

Q: A single electron accelerates between the cathode and the anode that has a potential difference of…

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Q: Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED…

A:

Q: Suppose an electron in the picture tube of a television set is accelerated from rest through a…

A: Potential difference (V) = 6000 V charge on electron (q) = -1.602x10-19C

Q: Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED…

A: The expression for magnitude of electric field in the region between the plates is E=Vd

Q: Cathode ray tubes (CRTS) used in old-style televisions have been replaced by modern LCD and LED…

A: Given: Distance between separated plates (d) = 1.56 cm. Potential difference across the plates (V) =…

Q: In a television picture tube, electrons strike the screen after being accelerated from rest through…

A: The electrostatic potential energy of electron is converted into the kinetic energyTherefore, we can…

Q: 6. Electron is accelerated by potential difference Up to 3,500KV. Determine the speed of the…

A: Given: V0 = 3500KVu = 0 To find: v Solution: Apply work-energy theorem, W = Kf - Ki    =…

Q: 6-The particle with + q charge and mass m is ejected from the point P with the initial velocity v =…

A: Given, Initial velocity, v→=40i^+30j^ Potential difference, V=1000 V Distance travelled by +q, L=10…

Q: electron mass, assume that the proton remains at rest. By calculating the work done on the electron…

A: Initial speed of electron (vi) = 295000 msFinal speed of electron (v) = 3×295000= 885000 ms

Q: Particle A has a charge of 10μC, a mass of 0.001kg, and starts at rest. What is the speed v of…

A: Given data :                 Charge of particle (q) = 10μC                 Mass of particle (m) =…

Q: Calculate the kinetic energy in Joules of these various objects E.K.=1/2mv^2 An electron travelling…

A: The equation of kinetic energy is: K=12mv2

Q: potential difference

A:

Q: If a Helium nucleus moves in the direction of an electric field generated by a stationary positive…

A: Answer- (a) the course of action is non spontaneous; work is required because the helium atom in…

Q: Two large parallel plates are placed horizontally with respect to each other and are then connected…

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Q: An electron is launched at a 45° angle and a speed of 5.0 x 10° m/s from the positive plate of the…

A: The electron inside the capacitor plates undergoes projectile motion. The mass of electron…

Q: 54 0 A positron (charge +e, mass equal to the electron mass) is moving at 1.0 x 107 m/s in the posi-…

A:

Q: Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED…

A: Given data:  Distance (d) = 1.20 cm = 1.20 × 10-2 m Potential difference (V) = 24.0 kV = 24.0 × 103…

Q: Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED…

A: Given:- The CRT included a set of accelerating plates separated by a distance of about 1.54 cm.…

Q: An electron is projected with an initial speed vi = 3.2 * 105 m/s directly toward a very distant…

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Q: A positron is projected directly at a stationary proton at a speed of 3*10^8 m/s. Using the concept…

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Q: What voltage is needed to accelerate an alpha particle from rest to 0.2% the speed of light, that is…

A: Force on charge particles F=qE

Q: Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED…

A: Given data *The accelerating plates separated by a distance is d = 1.36 cm = 1.36 × 10-2 m *The…

Q: 14. A proton is accelerated from rest through a potential difference of 120V. Calculate the final…

A: The electric field is defined as the force per unit charge acting on a charged particle placed at…

Q: Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED…

A: The magnitude of electric field in the region between the plates is

Q: Suppose an electron (q = -e= -1.6 × 10' 'C,m=9.1 × 10¯³ª kg) is accelerated from rest through a…

A: Potential energy = Charge * Potential difference U = q Vab  q = -e , Hence,  U = - e × Vab  K = - U…

Q: Suppose an electron is accelerated from rest through a potential difference of 100,000 volts.…

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Q: potential difference is needed to stop an electron

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Q: An electron is constrained to the central perpendicular axis of a ring of charge of radius 1.0 m and…

A: Given, Radius = 1.0 m Charge = 0.026 mC distance = 0.042 m

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.