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The potential on the outer surface of the membrane is +51.6 mV greater than that on the inside surface. How much charge resides on the outer surface?
If the charge in part (a) is due to K+ ions (charge +e), how many such ions are present on the outer surface?
Use Ampere's law to find the magnitude of the magnetic field at a distance ofr = 0.94 m from the wires when the currents are (a) in the same direction and (b) in opposite directions.
The landing speed of an airplane is dependent on the air density. By what percentage must the landing speed be increased on a day when the temperature is 100oF compared to a day when it is 50oF? Ass
A 20 microfarad capacitor is connected in series with a 160 ohm resistor. The capacitor is initially charged to a voltage of 50V. Find how long it takes for the voltage to drop to 10V. Please show a
The distance between an object and its image formed by a diverging lens is 8.70 cm. The focal length of the lens is -4.00 cm. Find (a) the image distance and (b) the object distance.
Calculate the apparent distance between the image of the fish and the front wall.
How much fuel would it take to provide this much energy if all the rest energy of the fuel could be transformed to kinetic energy of the spaceship?
A nearsighted patient's far point is 0.612 m from her eyes. She is able to see distant objects in focus when wearing glasses with a refractive power of -1.7 diopters. What is the distance between h
What should be the refractive power (in diopters) of her glasses (worn 2.6 cm from the eyes), so she can read the newspaper at a distance of 25 cm from the eyes?
(a) How far is the blackboard from her eyes? (b) If the writing on the blackboard is 6.93 cm high, what is the height of the image on her retina?
The induced electric field 13cm from the axis of a solenoid with a 10cm radius is 48V/m . Find the rate of change of the solenoid's magnetic field.
Coil 1 has a radius of 6.7 cm and rotates in a 0.14-T field. Coil 2 rotates in a 0.59-T field. Each coil experiences the same maximum torque. What is the radius (in cm) of coil 2?
A wire carries a current of 0.59 A. This wire makes an angle of 68° with respect to a magnetic field of magnitude 4.0 × 10-5 T. The wire experiences a magnetic force of magnitude 8.1 ×
Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.22 m from the spot, while charge B is
Suppose that the electric potential outside a living cell is higher than that inside the cell by 0.087 V. How much work is done by the electric force when a sodium ion (charge = +e) moves from the o
Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of each sphere is 3.03 × 10-6 kg. The gravitational force that each sphere exerts on the other is balanced
Please note that for water, the latent heat of fusion is Lf = 33.5 x 104 J/kg, and the latent heat of vaporization is Lv = 22.6 x 105 J/kg
By how many wavelengths is it delayed, if its vacuum wavelength is 600 nm?
what percentage (0 to 100) of the light intensity is is passed by a combination of the first polarizer and a second which has its polarization axis 45ˆ with respect to the first?
Some weeks later, after cutting off various lengths of wire for use in repairs, the electrician finds that the spooled wire carries a 2.9-A current when the same battery is connected to it. What is
Now suppose that there is energy dissipation of 0.03 J per cycle of the spring-mass system. What is the average power input in watts required to maintain a steady oscillation?
We have a large and powerful spring whose stiffness is 2.3 105 N/m. How much must we compress the spring?
If the mass of the bob is m, the length of the string is d, and the angle at which it swings is theta, what is the speed v of the mass as it swings? Hint: Find the vertical and inward radial compone