Problem 1:  The voltage across a membrane forming a cell wall is 83 mV and the membrane is 7.75 nm thick. What is the electric field strength in the cell wall, in volts per meter?

The voltage across a membrane forming a cell wall is 80.080.0 mV and the membrane is 10.0010.00 nm thick. What is the electric field strength? You may assume a uniform electric field.

Membrane walls of living cells have surprisingly large electric fields across them due to separation of ions. d= 7.5 mm E-5.75 MV/m What is the voltage in mV across an 7.5 nm thick membrane if the electric field strength across it is 5.75 MV/m? You may assume a uniform electric field. VAB.

A block of mass m = 0.5 kg is attached to a horizontal spring whose spring constant is k = 50 N/m. At t = 0.1 s, the position is x = 0.30 m, and velocity is v = 2.65 m/s. a) Find the equation of position as a function of time in the form: x = Acos(wt + P) b) When does the condition x = 0.30 m, and v = -2.65 m/s. occur for the first time?

A room with 2.9-m-high ceilings has a metal plate on the floor with V= OV and a separate metal plate on the ceiling. A 1.1 g glass ball charged to 4.9 nC is shot straight up at 5.0 m/s- Part A How high does the ball go if the ceiling voltage is 3.2×10° V ? Express your answer to two significant figures and include the appropriate units. h₁ = Submit Part B Value Request Answer h₂ = How high does the ball go if the ceiling voltage is -2.8x106 V? Express your answer to two significant figures and include the appropriate units. μA Value P Pearson Units ? Units ?

A capacitor holds a charge Q while in a circuit with a voltage supply V. If the distance between the plates of the capacitor is increased from d to 2d, what is the new charge stored on the capacitor?  A capacitor holds a charge Q while in a circuit with a voltage supply V. The voltage supply is now removed, and the circuit again closed. If the distance between the plates of the capacitor is increased from d to 2d, what is the new potential (voltage) across the capacitor?   A capacitor holds a charge Q while in a circuit with a voltage supply V. The voltage supply is now removed, and the circuit again closed. If the distance between the plates of the capacitor is increased from d to 2d, what is the new charge stored on the capacitor?

A region has a uniform electric field of 50 V/m up.  Point B is 3 meter to the left, and 4 meters above, point A.  The voltage at point A is 600 V.  What is the voltage at point B?

The voltage across a membrane forming a cell wall is 77.7 mV and the membrane is 9.02 nm thick. What is the electric field strength? (The value is surprisingly large, but correct.) You may assume a uniform E-field.

The electric field inside a 30-cm-long copper wire is 0.010 V/m. What is the potential difference between the ends of the wire?

An electron is fired at a speed vi = 4.3 × 106 m/s and at an angle θi = 39.7° between two parallel conducting plates as shown in the figure. If s = 1.7 mm and the voltage difference between the plates is ΔV = 99.8 V, determine how close, w, the electron will get to the bottom plate. Put your answer in meters and include at 6 decimal places in your answer. Do not include units. The x-axis of the coordinate system is in the middle of the parallel plate capacitor.   Round your answer to 6 decimal places.