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Question: Although these qualities vary from one type to another, a cell can be 2.2micrometers in diameter with a cell wall of 50nm thick. If the density of the wall material is the same as that of pure water, what is the mass (in mg) of the cell wall, assuming the cell to be spherical and the wall to be a very thin spherical shell?
Please explain how you came to your conclusion.
A certain single ion channel is selectively permeable to K and has a resistance of 1.15 GOhms. How many K ions travel through the channel during this time
an air-spaced parallel plate capacitor has an initial charge of .05 muc after being connected to a 10 v battery.a what
A 8.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. How big is the pulling force
We are going to fire a laser at a position of one meter to the left of the left of the bottom right corner of the a box. Assume the sides of the box to be perfect mirrors. How long did the light take to leave and return
The temperature of the air in a resonator is 15°C, when a tuning fork vibrates at one end, the spacing between tow successive resonances is found to be 50 cm. find the frequency of the tuning fork.
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
A hard-thrown tennis ball is moving horizontally when it bangs into a vertical concrete wall at perpendicular incidence. What are the directions of its velocity and acceleration just before hitting the wall
An important factor in many biochemical cell processes is the potential difference across a cell membrane. The inside of a cellis at a lower electric potential than the outside, with a potentialdifference of 0.080 V between them.
Prism of refractive index 1.53 is placed in water of refractive index 1.33. If the angle of the prism is 60. Calculate the angle of minimum deviation in water
A geological survey ship mapping the floor of the ocean sends sound pulses down from the surface and measures the time taken for the echo to return. How deep is the ocean at a point where the echo time (down and back) is 7.07 s
a girl is standing at the edge of a cliff 111 m above the ground. she reaches out over the edge of the cliff and throws
A 55 kg woman and an 80 kg man stand 14.0 m apart on frictionless ice. How far will the man have moved when he collides with the woman
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