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Cells maintain a high concentration of macromolecules inside them. How do you expect this to affect the osmotic pressure inside the cell? What mechanisms does the cell use to counterbalance osmotic pressure? What are "depletion forces" and why are they considered "osmotic" forces?
A 8.22 nC charge is located 1.82 m from a 4.38 nC point charge. (a) Find the magnitude of the electrostatic force that one charge exerts on the other.
A steel rod (? = 7860 kg/m3) has a length of 2.19 m. It is bolted at both ends between immobile supports. Initially there is no tension in the rod, because the rod just fits between the supports. Find the tension that develops when the rod loses 3..
What hormones are hypersecreted causing hyperglycemia and hypertension? What is the cause and what physical factor allow to rule out thyroid problem.
What is the acceleration in m/s of a 0.001kg bullet if the force of recoil gives an acceleration of 4.390 m/s? The gun has mass of 0.20 kg.
Four particles with masses 4 kg, 2 kg, 4 kg, and 2 kg are associated by rigid rods of negligible mass. The origin is centered on the mass in the lower left corner, and all the particles are located in Quadrant 1. The rectangle is 5 m wide and 4 m ..
A large power plant converts 1000 kg of water to steam every second to run its generators. Compute the amount of heat required each second just to vaporize the water, assuming this is done at 100 C. What is the power input in megawatts for this pu..
Find out the magnitude of that push.
A 362 g object is attached to a spring and executes simple harmonic motion with the period of 0.200 s. If the total energy of the system is 6.71 J.
The two springs each have a spring constant of 11. They are stretched by 1 as a current passes through the wire. How big is the current.
What is the radius of the pen. How far should it now sail to reach its original destination.
A converging lens has a focal length of f = 29 cm. If an object is placed 40 cm from the lens, where will the image be formed.
Suppose a ping-pong ball and a bowling ball are rolling toward you with the same momentum, and you exert the same average force in stopping each of them.
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