- 1 237
- 21 299 407
WNY Tutor
United States
Registrace 8. 04. 2007
WNY Tutor provides full-length video solutions to questions in physics, mathematics, chemistry, and other subjects! WNY Tutor is the ONLY channel that offers VIDEO solutions to ACTUAL homework questions (as opposed to the general tutorials offered by ALL other CZcams tutors). Students are welcome to send in their own question to info@wnytutor.com.
An alpha particle travels at a velocity of magnitude 550
An alpha particle can be produced in certain radioactive decays of nuclei and consists of two protons and two neutrons. The particle has a charge of q = +2e and a mass of 4.00 u, where u is the atomic mass unit, with 1 u = 1.661 x 10^-27 kg. Suppose an alpha particle travels in a circular path of radius 4.50 cm in a uniform magnetic field with B = 1.20 T. Calculate (a) its speed, (b) its period of revolution, (c) its kinetic energy, and (d) the potential difference through which it would have to be accelerated to achieve this energy.
zhlédnutí: 539
Video
A 1.0 mF capacitor with an initial stored energy
zhlédnutí 490Před 3 měsíci
A 1.0 F capacitor with an initial stored energy of 0.50 J is discharged through a 1.0 Mohm resistor. (a) What is the initial charge on the capacitor? (b) What is the current through the resistor when the discharge starts? Find an expression that gives, as a function of time t, (c) the potential difference VC across the capacitor, (d) the potential difference VR across the resistor, and (e) the ...
A capacitor with initial charge q0 is discharged through a resistor
zhlédnutí 525Před 3 měsíci
A capacitor with initial charge q0 is discharged through a resistor. What multiple of the time constant t gives the time the capacitor takes to lose (a) the first one-third of its charge and (b) two-thirds of its charge?
In an rc series circuit e=12v
zhlédnutí 337Před 3 měsíci
In an RC series circuit, emf E = 12.0 V, resistance R = 1.40 Mohms, and capacitance C = 1.80 mF. (a) Calculate the time constant. (b) Find the maximum charge that will appear on the capacitor during charging. (c) How long does it take for the charge to build up to 16.0 uC?
In the figure E1=6V, E2=12V, R1=100
zhlédnutí 600Před 3 měsíci
In the figure E1 = 6.00V, E2 = 12.0 V, R1 = 100 ohms, R2 = 200 ohms, and R3 = 300 ohms. One point of the circuit is grounded (V = 0). What are the (a) size and (b) direction (up or down) of the current through resistance 1, the (c) size and (d) direction (left or right) of the current through resistance 2, and the (e) size and (f) direction of the current through resistance 3? (g) What is the e...
The resistances in figure a and figure b are all
zhlédnutí 421Před 3 měsíci
The resistances in Figure (a) and Figure (b) are all 6.0 ohms, and the batteries are ideal 12 V batteries. (a) When switch S in Figure (a) is closed, what is the change in the electric potential V1 across resistor 1, or does V1 remain the same? (b) When switch S in Figure (b) is closed, what is the change in V1 across resistor 1, or does V1 remain the same?
In the figure a slab of mass
zhlédnutí 275Před 3 měsíci
In the figure, a slab of mass m1 = 40 kg rests on a frictionless floor, and a block of mass m2 = 10 kg rests on top of the slab. Between block and slab, the coefficient of static friction is 0.60, and the coefficient of kinetic friction is 0.40. A horizontal force F of magnitude 100 N begins to pull directly on the block, as shown. In unit-vector notation, what are the resulting accelerations o...
An electron moves through a uniform magnetic field
zhlédnutí 801Před 4 měsíci
An electron moves through a uniform magnetic field given by B = Bxi (3.0Bx)j. At a particular instant, the electron has velocity v = (2.0i 4.0j) m/s and the magnetic force acting on it is (6.4 X 10^-19)N. Find Bx.
The magnitude j of the current density
zhlédnutí 384Před 4 měsíci
The magnitude J of the current density in a certain lab wire with a circular cross section of radius R = 2.00 mm is given by J = (3.00 x 10^8)r^2, with J in amperes per square meter and radial distance r in meters. What is the current through the outer section bounded by r = 0.900R and r = R?
In the figure find the equivalent capacitance of the combination
zhlédnutí 460Před 4 měsíci
In the figure, find the equivalent capacitance of the combination. Assume that C1 is 10.0 uF, C2 is 5.00 uF, and C3 is 4.00 uF.
Each of the uncharged capacitors in the figure has a capacitance of
zhlédnutí 398Před 4 měsíci
Each of the uncharged capacitors in the figure has a capacitance of 25.0 uF. A potential difference of V = 4200 V is established when the switch is closed. How many coulombs of charge then pass through meter A?
You have two flat metal plates each of area
zhlédnutí 315Před 4 měsíci
You have two flat metal plates, each of area 1.00 m^2, with which to construct a parallel-plate capacitor. (a) If the capacitance of the device is to be 1.00 F, what must be the separation between the plates? (b) Could this capacitor actually be constructed?
In the figure V=10V, C1=10uF, and C2=C3=20uF
zhlédnutí 763Před 4 měsíci
In the figure, V = 10 V,C1 = 10 mF, and C2 = C3 = 20 mF. Switch S is first thrown to the left side until capacitor 1 reaches equilibrium. Then the switch is thrown to the right. When equilibrium is again reached, how much charge is on capacitor 1?
The figure shows a parallel plate capacitor of plate area
zhlédnutí 1,1KPřed 4 měsíci
The figure shows a parallel-plate capacitor with a plate area A = 7.89 cm2 and plate separation d = 4.62 mm. The top half of the gap is filled with material of dielectric constant k1 = 11.0; the bottom half is filled with material of dielectric constant k2 = 12.0. What is the capacitance?
In the figure the battery has a potential difference
zhlédnutí 952Před 4 měsíci
In the figure, the battery has potential difference V = 9.0 V, C2 = 3.0 uF, C4 = 4.0 uF, and all the capacitors are initially uncharged. When switch S is closed, a total charge of 12 uC passes through point a and a total charge of 8.0 uC passes through point b. What are (a) C1 and (b) C3?
A 100 pf capacitor is charged to a potential difference of 100v
zhlédnutí 641Před 4 měsíci
A 100 pf capacitor is charged to a potential difference of 100v
Two parallel plate capacitors, 6 uF each, are connected in parallel
zhlédnutí 358Před 4 měsíci
Two parallel plate capacitors, 6 uF each, are connected in parallel
A parallel plate capacitor has circular plates
zhlédnutí 550Před 4 měsíci
A parallel plate capacitor has circular plates
The capacitor in the figure has a capacitance of
zhlédnutí 314Před 4 měsíci
The capacitor in the figure has a capacitance of
An infinite nonconducting sheet has a surface charge density σ = 0.10
zhlédnutí 942Před 4 měsíci
An infinite nonconducting sheet has a surface charge density σ = 0.10
A nonuniform linear charge distribution given by
zhlédnutí 459Před 4 měsíci
A nonuniform linear charge distribution given by
An electron has an initial velocity of
zhlédnutí 777Před 5 měsíci
An electron has an initial velocity of
The figure shows a thin plastic rod of length l
zhlédnutí 355Před 5 měsíci
The figure shows a thin plastic rod of length l
The figure shows a thin plastic rod of length l
zhlédnutí 1,9KPřed 5 měsíci
The figure shows a thin plastic rod of length l
Two charged particles are shown in part a of the figure. particle 1 with charge q1
zhlédnutí 828Před 5 měsíci
Two charged particles are shown in part a of the figure. particle 1 with charge q1
thank you, related rates has been my nightmare lately
Thank you SIr now my concept is cleared
Am i tripping or should it be 4 divided by cosine of the angle.
Thank you for a nice, simple explanation.
excellent
Which book are you using?
You are single-handedly saving so many hours of searching for help. Thanks
thanks
Goated.
This man is clearly a god. Thank you sir!!!
Thank you for going back over the internal angle rule! It is very annoying to see videos that glide right over geometry and trig when those are the parts people struggle with the MOST.
Please can you make a video of 3 loops with multiple voltage switches
Trickiest thing about this question IMO is that it's poorly worded and somewhat unrealistic esp. for a science textbook. Initial wording makes it seems like 57.7 and 80.5 apply to "phase 1" and the remaining measures to "phase 2." They should really say, during two completely separate stopping incidents, your total distance covered (during both reaction and stopping phases) is this and initial velocity was that. Assume you have exactly the same reaction time and deceleration during these two completely unrelated events.
can u show the derivation for the equation solid sphere of uniform charge
🐐
How can the bob complete the circle if its velocity at the top is zero. If the velocity is zero at the top then it will fall down vertically downwards. The correct answer should be that the tension in the string at the top will be zero. This will give a finite velocity (instead of zero) for the bob at the top. The speed at the top should be (gL) ^0.5
omg thank you so much
Joss ❤
Thank u Man
I owe it to you man. My professor sucked at explaining this
i think the y acceleration or gravity should be positive since the mass is going downwards??? if it was negative, then the car would go backwards since negative velocity makes the object go the opposite way
Thank you so much for the videos!! It really saved me!
Explained beautifully. Thank you so much
Thanks you the goat
Thanks
Dude, I appreciate the help, but this was just flat out wrong for the exact same question on physics homework.
You are the best
Thanks for the videooo, it was a great help
You're so excellent at breaking down these problems! Thank you so much!
your handwriting is impeccable
Amazing❤❤❤❤
if the electric field wasn't constant for the J and K direction, would the Qnet have just been the addition of every side?
Now I can feel at peace . This ploblem was hard for me 😊
This was still confusing af
Thanks for this solution
This is more scientific solution than common solution in the internet for halliday. Good job . Thanks
@WNY tutor please come back sir
U save my life. I couldn't sleep all night thinking about this exercise, and now all have sence. Love u bro ❤❤❤
Thanks clearly explained
Nyc work
Wow thanks
Thank you so much your videos always help me
Thank you!
The problem stated in the description does not match the video. Did you upload the wrong file while making your video series and made two of these videos instead? Regardless, thank you for the clear explanation. I was able to use the things you taught me in the video to solve the original equation with those tools.
great explanation!
Thanks so much for making these videos available.
8:51 I just simply didn't get it! Why isn't your force normal in the direction of the object, in lieu it is perpendicular to the surface?
Thanks!
Thank you!!
ma man