from glass membrane electrode , Identify all of the potentials associated with your cell, and indicate the potential value which is not constant.

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. a) How long does it take for the rock to reach the water? b) How far does the rock travel horizontally before striking the water, assuming negligible air resistance? c) what is the final horizontal velocity of the ball ? d)What is the final vertical velocity of the ball? e) the magnitude of the final velocity of the ball,

Physics University 1

For a capacitor of area 100 mm ´100 mm operated at T = 300K, with F_M = 5.2 eV, x_ox = 3 nm, and

N_D = 10¹⁷ cm^-3

a) Calculate the flat band capacitance and treshold voltage

b) Draw the low frequency and high frequency CV curves

Please solve it completely and step by step. I will rate the question

If somebody could assist me with the following questions, that would be greatly appreciated! Thank you!

1. How can fluorescence be used to determine the concentration of a molecule?

2. Fluorescence and absorbance comparison (energy, wavelengths)?

3. Why and how we can determine quinine concentration? (include wavelengths used)

4. Why is the detector in a fluorometer placed at a specific angle to the incident beam?

What is the sequence of movements of the standing bow pulling pose?

Why is there uneven spacing in the P and R branches of a vibration rotation spectra?

An ideal gas that goes through a cyclical process on a PV diagram and returns to the location on the PV diagram where it began. analyze changes in temperature and thermal energy of the gas change during the cycle. Analyze transfers of energy through heat and work during various stages of the cycle.

note: including formulas in the analysis would be helpful.

Two protons are brought from very far apart to a distance of 1×10−15 m and kept there. Then, an electron is brought to point A, equidistant from both protons and forming an equilateral triangle with the two protons. The electron is let go and passes through point B, the midpoint between protons. Determine: a. The electrostatic force between proton? b. The electric field at points A and B due to the protons

a one-dimensional box of length 2.7 nm

(1) Calculate the wavelength of electromagnetic radiation emitted when the photon makes a transition from n = 2 to n = 1. Answer in units of µm.

(2) Calculate the wavelength of electromagnetic radiation emitted when the photon makes a transition from n = 3 to n = 2. Answer in units of µm

(3) Calculate the wavelength of electromagnetic radiation emitted when the photon makes a transition from n = 3 to n = 1. Answer in units of µm.

A 700-kg elevator starts from rest. It moves upward for 4.50 s with constant acceleration until it reaches its cruising speed of 1.75 m/s. (a) What is the average power of the elevator motor during this time interval?

There are two identical, positively charged conducting spheres fixed in space. The spheres are 38.2 cm38.2 cm apart (center to center) and repel each other with an electrostatic force of ?1=0.0705 NF1=0.0705 N . A thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed, the spheres still repel, but with a force of ?2=0.100 NF2=0.100 N . The Coulomb force constant is ?=1/(4??0)=8.99×109 N⋅m2/C2k=1/(4πϵ0)=8.99×109 N⋅m2/C2 .

James has just jumped out of an airplane. After he opens his parachute he experiences 2 forces: the constant force of gravity, and a wind drag that is proportional to his velocity. His height may therefore follow the equation: d²h/dt² = -9.8 - 2(dh/dt). As a second-order differential equation, this is not technically solvable by separation of variables. However, because the variable h appears only in its derivatives, we can turn this into a first-order equation, and solve that by separation.

a) Letting v = dh/dt, rewrite the above equation as a first-order differential equation in v.

b) Your equation in part a suggests that there is one velocity for which dv/dt = 0. What is this velocity?

c) Solve your equation using separation of variables. Your solution should contain an arbitrary constant: call it C₁.

d) Calculate lim t to infinite v(t) and use it to describe what is physically happening to James after he's been in the air for a long time.

e) Now that you have a velocity function v(t), integrate it with respect to t to find a position function h(t). This will introduce a second constant C₂.

f) Suppose James begins at a height of 3000m with no initial velocity, what is his height 3s later?

A dielectric-filled capacitor consists of two parallel plates, each with an area  A = 15.0 cm2 , seperated by a distance of d = 10.0 mm and dielectric constant k = 4.00. A potential difference  V= 10.0 V  is applied to these plates . Throughout the problem, use ϵ0 = 8.85×10⁻¹² C2/N⋅m2

Part A)

Calculate the energy U1of the dielectric-filled capacitor.(J)

Part B)

The capacitor remains connected to the battery. Calculate the energy U2 of the capacitor at the moment when the capacitor is half-filled with the dielectric, because the dielectric is slowly pulled away. of(J)

Part C

The capacitor is now disconnected from the battery, and the dielectric plate is slowly removed the rest of the way out of the capacitor. Find the new energy of the capacitor, U3 of (J)

Part D)

In the process of removing the remaining portion of the dielectric from the disconnected capacitor, how much work W is done by the external agent acting on the dielectric? of (J)

t² (d²r/dt²) - 9t (dr/dt) + 16r = 4 is an example of a "Cauchy-Euler equation." Such equations appear in a number of physics and engineering applications.

a) Write the complementary homogeneous equation.

b) Plug r = e^kt into the equation you wrote in part a. Show that this solution will not work for any constant k: this equation has no exponential solution.

c) Plug the guess r = tⁿ (where n is a constant) into the equation you wrote for part a. Solve the resulting algebraic equation for n; you should find 2 solutions.

d) Write the general solution to the equation you wrote in Part a.

e) Find a specific solution to the origianl (inhomogeneous) equation.

f) Write the general solution to the inhomogeneous equation.

g) What is it about this particular equation that made r = tⁿ work?

make technology papers related to scattering