The electrons in a cathode ray tube are accelerated from cathode(negative terminal) to anode(positive terminal) by a potential difference of 2000 V. If this potential difference is increased to 8000 V the electrons will arrive at the screen with a.twice the kinetic energy and four times the velocity. b.twice the kinetic energy and twice the velocity. c.four times the kinetic energy and twice the velocity. d.four times the kinetic energy and four times the velocity. e.twice the kinetic energy and the same velocity

Q: 2.) a.)How much energy, in electron-volt, is used in operating a 60-Watt headlight connected to a…

A: Given that Power of headlight P = 60 W EMF of battery E = 12 V Time t = 1 h = 3600 s

Q: Choose the correct answer. Lightning is a visible electrostatic discharged of very high potential…

A: Lightning occurs when the negative charge at the bottom of the cloud is attracted to positive…

Q: 3. The electrons in the lab are accelerated through a potential difference that you control. What is…

A:

Q: Two protons in the nucleus of a 238ų atom are 6.0 fm (6.0x101$m) apart. What is the potential energy…

A:

Q: If Vs = 18 V, R1 = 30 0, and R2 = 100 Q, what is: a.) IT b.) l, and l2 c.) V1 and V2

A: The total resistance of resistors connected in parallel is given by 1RT = 1R1+1R2+1R3+.... The…

Q: The electrons in a cathode ray tube are accelerated from cathode(negative terminal) to…

A: Given that, Initial potential difference = 2000 V Final potential difference = 8000 V

Q: If a doubly-ionized oxygen atom (O–2) is accelerated from rest by going through a potential…

A:

Q: An alpha particle (two protons, two neutrons) moves into a stationary gold atom (79 protons, 118…

A: Given Alpha particle q1          = 2e Gold atom protons q2 = 79 e Gold atom neutrons       = 118…

Q: Q06. A nerve cell fires with a frequency of 50 Hertz (50 firing each s firing, 105 singly-charged…

A: We know that the work done by the moving charge is given as  W= qV  where V is the electric…

Q: Q3:Two parallel plates A and B are spaced 1 cm apart. A stream of electrons is projected at an…

A: Given, Separation between plates d =1cm accelerating voltage =2 kVangle = 300

Q: A student is able to isolate a single charged oil drop while performing a Millikan oil drop…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: The distance, r, between the proton and electron in the hydrogen atom is about 10-10 m. Determine…

A: Given, r=10-10 mcharge of the electron q=1.6×10-19C

Q: 6. A small ball of mass 2.5 x 10-4 kg is suspended on a 70.0 cm string, halfway between two parallel…

A: Mass of ball is: Length of string is: Distance between plates is: Number of electrons is:

Q: 3. If a proton and an electron are released when they are 2.0 * 10^10 m apart (a typical atomic…

A: Given data: The distance between electron and proton r =2×10-10 m mass of electron m=9.1×10-31 kg…

Q: 1. An evacuated tube uses an accelerating voltage of 55 kV to accelerate electrons to hit a copper…

A:

Q: An electron accelerates between the cathode and the anode. It passes through a potential difference…

A: Given data V=2000 Vq=1.6×10-19 Cm=9.1×10-31 kg Here, V is the potential, q is the charge. Here, m is…

Q: A completely ionized beryllium atom (net charge = +4e) is accelerated through a potential difference…

A:

Q: b): If you want to stop a fast-moving electron then what happen?

A: Given data, An electron is moving and suddenly stopped by an external agent.

Q: A charged oil drop in Milli Kaus apparatus falls 1 mm at constant speed in a time 32.3 s if Vab=0 a.…

A: Given that, Initial applied voltage, Vab=0Distance fell, d= 1 mm=0.001 mTime taken, t=39.3 secThe…

Q: An electron was accelerated from rest through a potential difference of 1500 V. What is its speed?…

A: The Kinetic energy of electron accelerated through a certain potential difference is given as…

Q: 1. An evacuated tube uses an accelerating voltage of 45 kV to accelerate electrons to hit a copper…

A: accelerating voltage = 45 kV = 45000 V particle = electron

Q: 6. An atom of helium and one of argon are singly ionized ions are then accelerated from rest by the…

A: Given, an atom of helium and argon are singly ionized i.e., they lose one electron each and now…

Q: What is the electric potential energy of two protons separated by 3.2 nm? O A) 0.045 ev B) 0.45 ev )…

A:

Q: Determine the speed of an electron that has a kinetic energy of 5 eV.   a. 1.33 x 106 m/s b.3.00…

A: Given Information Kinetic energy of the electron is,   k=5 eV ⇒k=5×1.60×10-19 J ⇒k=8.00×10-19 J…

Q: The electronic structure of atoms and molecules may be investigated using photoelectron…

A: Speed, v = 420 km/s = 420×10³ m/s = 420000 m/s Time, t = 10 µs Kinetic energy of the electron, K = ?…

Q: Two parallel plates AB are insulated by a vacuum with a distance of 5 cm between them. An…

A:

Q: 6. An electron is fired at 5.2x107 m/s between two electric plates. If the plates are 6.0 cm in…

A:

Q: 3) In Millikan’s oil drop experiment an oil drop with N additional electrons and mass m is subjected…

A: Given, In Millikan's oil drop experiment, an oil drop with N extra electrons and mass m is exposed…

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.