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Problem: A cell membrane is composed of lipid molecules and is approximately 17 nm thick. If the dielectric constant of a lipid is k=6,
Part A: What is the approximate capacitance of a spherical cell that has a diameter of 20 micrometers?
1 a small steel ball bearing with a mass of 20.0 g is on a short compressed spring. when aimed vertically and suddenly
A person carrying an aquarium with 3 ft deep water in it rides an elevator downward. Before stopping at the first floor, the elevator is decelerating with one third of g. What is the measure pressure at the bottom of the aquarium?
A block attached to a spring of unknown spring constant oscillates with a period of 2.0 seconds. What is the period when the mass is doubled?
A 1800·kg car traveling with a velocity of 15·m/s north collides head-on with a 3600·kg truck traveling with a velocity of 20·m/s south. what is the velocity of the truck immediately after the collision
Light containing two dissimilar wavelengths passes during a diffraction grating with 1000 slits/cm. On a screen 17.0 cm from the grating, the third-order maximum of the shorter wavelength falls midway among the central maximum and the first side maxi..
A 14 kilogram box slides down a long, frictionless incline of angle 30 degree. Calculate the kinetic energy and the speed of the box just as it reaches the bottom of the incline
An aluminum rod is 18.0 cm long at 20°C and has a mass of 350 g. If 12500 J of energy is added to the rod by heat, what is the change in length of the rod
a bathysphere used for deep-sea exploration has a radius of 1.50 m and a mass of 1.19 x 104 kg. in order to dive this
A steel rod of mass m and length L has the linear expansion coefficient X. It is standing vertically and supports a box of mass M on its top. what is the heat capacity of the rod for this process
Fifty Circular turns of wire are wound closely together, so that all of them have a radius of close to 0.05,. what is the magnitude of the magnetic field at its center
A block of copper with mass 11153 g is lowered by a string into a large pail of water. what would be the tension in the supporting string
A 240kg block with mass density of 1200kg/m^3 was accidentally dropped into water and sink. What force should be applied to the block to pull it out of water
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