Physics

Describe the dependence of the depletion zone capacitance on the reverse bias voltage?

Describe the dependence of the depletion zone capacitance on the reverse bias voltage?

Describe the dependence of the depletion zone capacitance on the reverse bias voltage...
Explain the origin of the depletion capacitance...

That's my best simplified questions on electronics. I hope anyone will be able to understand it and help me.

rjedlicka   485   1 Reply

Rkamu

When charging a capacitor, why does the charge accumulation taper off as you near maximum capacitance?

When charging a capacitor, why does the charge accumulation taper off as you near maximum capacitance?

When you are charging a capacitor, why does the charge accumulation taper off as you near maximum capacitance?

rj.lall   279   1 Reply

inquirytobio

What is the equivalent capacitance of the combination shown in the figure?

What is the equivalent capacitance of the combination shown in the figure?

http://farm5.static.flickr.com/4145/5442189977_4e29ae8323.jpg
What is the equivalent capacitance of the combination shown in the figure?
DATA: C1 = 2.0 ?F, C2 = 3.0 ?F, C3 = 3.5 ?F, V = + 85 V.
I have worked this problem over and over and keep gettin

leolena   494   N/A

leolena

How does capacitance depend on separation?

How does capacitance depend on separation?

How does the capacitance depend on separation? Does it follow a straight line? Does it follow the trend you expect? Why or why not?

How does the capacitance depend on area? Does it follow a straight line? Does it follow the trend you expect? Why or

rizzy81   445   N/A

rizzy81

An electronic flash unit for a camera contains a capacitor with a capacitance of 900 µF. When the unit is full?

An electronic flash unit for a camera contains a capacitor with a capacitance of 900 µF. When the unit is full?

An electronic flash unit for a camera contains a capacitor with a capacitance of 900 µF. When the unit is fully charged and ready for operation the potential difference between the capacitor plates is 210 V.
(a) What is the magnitude of the charge on

Leon.g   732   1 Reply

Rj55

Between the plates of a capacitor I have 2 layers of different dielectrics. How do I calculate capacitance?

Between the plates of a capacitor I have 2 layers of different dielectrics. How do I calculate capacitance?

I know the formula for capacitance is C= (k*A*epsilon0) / d but how do you calculate if there are two different layers of dielectric; with different widths & ks,within the capacitor? Any help would be greatly appreciated.

butternut   292   1 Reply

iliketorifk

How do a capacitance meter measure capacitance and D-factor?

How do a capacitance meter measure capacitance and D-factor?

Does it measure impedance, current, or time constant, etc. then uses that value to compute for capacitance and dissipation factor?

inspector1994   374   1 Reply

rizzy81

What is the baton's rotational kinetic energy?

What is the baton's rotational kinetic energy?

A drum major twirls a 91-cm-long, 480 g baton about its center of mass at 140rpm .

What is the baton's rotational kinetic energy?
Express your answer using two significant figures.

rkearl27   6812   1 Reply

RJ

Can an object NOT in rotational equilibrium be in translational equilibrium? And vice versa?

Can an object NOT in rotational equilibrium be in translational equilibrium? And vice versa?

For example, if an object is rotating at an increasing rate due to a net rotational force can it still be in a state of translational equilibrium since there is no translational force acting on it?

bug2012   511   1 Reply

rkbrookover

Studying for an exam, need an explanation for inertia and rotational kinematics?

Studying for an exam, need an explanation for inertia and rotational kinematics?

If two objects, a uniform disk and a uniform sphere, have the same moment of inertia about their axes of rotation and the same angular velocity, then the disk has the larger rotational kinetic energy.


Why is this answer false
ok, im an idiot, its t

rjcool123   269   1 Reply

rkkovach

Why is the rotational inertia greater for a gymnast when she swings by her hands from a horizontal bar wit?

Why is the rotational inertia greater for a gymnast when she swings by her hands from a horizontal bar wit?

Why is the rotational inertia greater for a gymnast when she swings by her hands from a horizontal bar with her body fully extended than when she executes a somersault with her body fully extended?

inreverie   395   2 Replies

inquirytobio

What is the rotational kinetic energy?

What is the rotational kinetic energy?

A basketball of mass 125g is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s when it rolls off the edge and it falls towards the floor,1.1 m below. What is the rotational kinetic energy of the ball just before

rizza mae   957   2 Replies

rk90

What does rotational symmetry order of 2, 4 or 8 mean?

What does rotational symmetry order of 2, 4 or 8 mean?

How do you know if a shape has rotational symmetry off 2, 4 or 8? I don't even know what that means!

leolena   341   1 Reply

leon

At the outer edge of a rotating space habitat, 130 m from its center, the rotational acceleration is g. What i?

At the outer edge of a rotating space habitat, 130 m from its center, the rotational acceleration is g. What i?

At the outer edge of a rotating space habitat, 130 m from its center, the rotational acceleration is g. What is the rotational acceleration at a distance of 65 m from the center of the habitat?

rkiecaboose   5574   1 Reply

rizzlepuff8

Is friction between the rotational disk and the axis of rotation important in our experiment?

Is friction between the rotational disk and the axis of rotation important in our experiment?

Is friction between the rotational disk and the axis of rotation important
in our experiment? Think of a simple way to estimate this frictional
torque

bugaian   379   1 Reply

rkay9241

Question about our rotational velocity in respect with the earth?

Question about our rotational velocity in respect with the earth?

I know that when we are standing on a ground with o velocity relative to the Earth, we have the same rotational velocity as the Earth. But I am interested when the earth surface rotates to the point in curves away from us, how do we sustain the same

Rj55   323   2 Replies

Rkamu

When the sphere reaches the bottom of the ramp, what is its rotational kinetic energy? When the sphere reaches?

When the sphere reaches the bottom of the ramp, what is its rotational kinetic energy? When the sphere reaches?

A 1.6  solid sphere (radius = 0.20 ) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.55  high and 6.0  long. When the sphere reaches the bottom of the ramp, what is its rotational kinetic energy? When th

inspector1994   1342   1 Reply

buttwheat

What is the rotational inertia of a ball rolling back and forth in a cylindrical trough?

What is the rotational inertia of a ball rolling back and forth in a cylindrical trough?

I'm a little confused-- seems more complicated than just plugging into the parallel-axis theorem.  I suppose this gets into the realm of a pendulum?  

Say you know the radius of the ball and the radius of the 'cylinder' (though only part of the cyli

rjedlicka   388   1 Reply

illestchemist

Where can I get a rotational encoder that will fit on a 1/8" hexagonal shaped shaft?

Where can I get a rotational encoder that will fit on a 1/8" hexagonal shaped shaft?

I need a way to measure rotational velocity.  I'm looking for a rotary encoder that has an 1/8" hexagonal hole to insert the shaft.

buybuybaby   241   1 Reply

Bugbaja

How much rotational energy does the Earth have?

How much rotational energy does the Earth have?

Like if you could harness all the energy of the Earth's rotation until it stopped spinning. How much energy would you have? Is there a formula for figuring this out? Using mass and rotation speed or something?

inquirybio   289   4 Replies

rkkovach

What are the combinations rotational inertia and kinetic energy?

What are the combinations rotational inertia and kinetic energy?

Two particles each with mass m = 0.85 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.6 cm and mass M = 1.2 kg. The combination rotates around the rotation axis with angular speed = 0.30 rad/s. Me

leo749   1919   1 Reply

rizzy81

Does this object have rotational energy?

Does this object have rotational energy?

I have a project that involves kinetic energy.

In this project (a sculpture), various objects spin.  One object spins while another revolves around an axis.  (Compare the rotation of the Earth to its revolution around the sun.)

Do both have rotatio

Bugbaja   269   1 Reply

rizza mae

Is the rotational speed of the earth slowing down for instance due to drag with its atmosphere?

Is the rotational speed of the earth slowing down for instance due to drag with its atmosphere?

In other words has it been measured accurately enough to tell. If so what is its rate of decellaration?

inreverie   471   4 Replies

buggyg69

A drum major twirls a baton, find the kinetic rotational energy?

A drum major twirls a baton, find the kinetic rotational energy?

A drum major twirls a 93--long, 410  baton about its center of mass at 110 . What is the baton's rotational kinetic energy?

inspector1994   1878   1 Reply

irina

Physics Question about Rotational Motion and Conservation of Energy?

Physics Question about Rotational Motion and Conservation of Energy?

A yo-yo is made of two solid cylindrical disks, each of mass 0.061 kg, and diameter 0.066 m, joined by a (concentric) thin solid cylindrical hub of mass 0.0061 kg, and diameter 0.0115 m.
(a) Use conservation of energy to calculate the linear speed o

rizza mae   500   1 Reply

insomniac

What does "rotational velocity" mean during a hurricane?

What does "rotational velocity" mean during a hurricane?

What is the difference between "Rotational velocity" and "Distansce to Axis of Rotation"?

rizza mae   368   2 Replies

rkim12

Compute the ratio of the magnitudes of the Earth's orbital angular momentum and its rotational angular momentu?

Compute the ratio of the magnitudes of the Earth's orbital angular momentum and its rotational angular momentu?

Compute the ratio of the magnitudes of the Earth's orbital angular momentum and its rotational angular momentum.

Are these momenta in the same direction?

rjlene   1855   1 Reply

leon1977

How would you calculate the theoretical yield of zinc chloride (grams)?

How would you calculate the theoretical yield of zinc chloride (grams)?

How would you calculate the theoretical yield of zinc chloride (grams)?

I have to calculate the theoretical yield of zinc chloride of the reaction below:

Zn+2HCl----->ZnCl2+H2

I have been trying to solve this for a while and am confused on how to

mickeylee   5139   1 Reply

Tonbon1221

How do you calculate the average weight?

How do you calculate the average weight?

i am looking at this book seeing how they solved this and the book is so complicated especially since we dont use it.. but the example given is calculate the atomic weight of Br .. we are given the mass number of 79 and % abundance ( i have no idea w

datheman   387   1 Reply

ilibee

help please!!

help please!!

Estimate the range of resistance needed to make a variable timer for typical intermittent windshield wipers if the capacitor used is on the order of 3microF . Assume the time between cycles of the wipers to be from 1 second to 15 seconds.Express your

abbysmith3351   2152   1 Reply

savio

HELp PLEASE bio man or any one thats fluent in physics lol!

HELp PLEASE bio man or any one thats fluent in physics lol!

What is the current in the resistor after a large number of time constants have elapsed???

constant time of circuit= .574ms
R=505 ohms
L=290 mH
initial current of the resistor just after S2 is closed and S1 is opened= .495A

gh1991   1044   3 Replies

savio

Why is the correct term "Coriolis Effect" and not "Coriolis Force?"?

Why is the correct term "Coriolis Effect" and not "Coriolis Force?"?

This is for my science project and I have no idea what to put down.
The complete question is:
Explain why the correct term is "Coriolis Effect" and not "Coriolis Force". Explain what is responsible for this concept and what impact it has on global w

microB   888   3 Replies

ilapple

Please help with Coriolis effect and El Nino?

Please help with Coriolis effect and El Nino?

I am missing these two questions I hope somebody would give me a hand Thanks.

---What is the Coriolis Effect? How does wind speed affect the Coriolis? And Location?

--What is ENSO? Why is ENSO not good for anchovy fisheries of South America? What e

micphy   420   1 Reply

smmoh4

Can someone explain the Coriolis Effect?

Can someone explain the Coriolis Effect?

Can you explain the Coriolis Effect and how it causes Hurricanes? And also, why do hurricanes in the Northern Hemisphere rotate counter clockwise and in the Southern Hemisphere they turn clockwise? Can you explain this simply but thoroughly? Thanks!

micphy   425   1 Reply

smooth229

I dont under stand the coriolis effect. Can someone explain it?

I dont under stand the coriolis effect. Can someone explain it?

im a paintball sniper and i want to understand the coriolis effect better. I dont need some big giant essay i just need to know the basics. Can i get some help?

smooth229   448   2 Replies

dave2011

Why does the Coriolis effect prove Earth rotates?

Why does the Coriolis effect prove Earth rotates?

Need evidence Coriolis effect is present that supports Earth's rotation.

smokeyd   493   2 Replies

microggc

Help me out with the Coriolis Effect please?

Help me out with the Coriolis Effect please?

Without the Coriolis Effect the winds would go straight and there would be massive damage done to the Earth. What are some Examples of the damage is? What type of things and trouble will  it cause?

micro   383   1 Reply

smokebomb13

Taking the Coriolis Effect into account when designing a space station?

Taking the Coriolis Effect into account when designing a space station?

I am in a competition where teams must design a space settlement, and our space settlement is a torus-like shape and was just wondering how to take the Coriolis Effect into account with the rotations per minute etc.
thanks!

iliketorifk   464   3 Replies

illculayter

How do you calculate torque on a trebuchet lever arm?

How do you calculate torque on a trebuchet lever arm?

The site http://ronleigh.com/ivytech/_ref-trebuchet-range.htm says that to calculate torque on the counterweight arm of a trebuchet, the formula is as following:

Torque on counterweight arm = Length of counterweight arm ? ((counterweight mass x 9.8

illicitf8   638   1 Reply

ilindsey05

what is the formula to calculate torque?

what is the formula to calculate torque?

what is the formula to calculate torque?

datwillis   571   4 Replies

micro123