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1) you are conducting an osmosis experiment with a semi-permeable dialysis membrane of fixed pore size. If the solution temperature rises by 20 degree celcius and the coefficient of linear expansion of the regenerated-cellulose membrane is a=2*10^-4 K^-1, how much bigger are the pores in the membrane?
q1. a propeller spins at 1780 revmin.a what is an angular velocity in rads?b what is an angular displacement of the
What differences exist between Bohr model and the modern theory of an atom and what major flaw is built-in to the Bohr model of the atom
In a pool game, the cue ball, which has an initial speed of 8 m/s, make an elastic collision with the eight ball, which is initially at rest. Find the direction of motion of the cue ball after the collision
Consider two unknown point charges, Q1( on the left) and Q2 are separated by a distance, o.981m. Find the ratio Q2/Q1 in both magnitude and sign
If the human aorta has a cross-sectional area of 2.5 cm2 and the flow speed of blood in the aorta is 30 cm/s while the density of blood is 1.05 g/cm3. Calculate the mass flow rate of blood (in g/s) in the aorta
A particular race car can cover a quarter mile track (402 m) in 7.00 s starting from a standstill. what horizontal force must the road exert on the tires
The frequncy doubled output of a laser has a wavelength of 532nm. If each pulse of light has a total energy of 0.550J and the repetition rate of the laser is 30Hz, how many photons does the laser emit at 532 nm in 3 minutes
The "size" of the nucleus in Rutherford's model of the atom is about 1.00 fm = 1.00E-15 m. Determine (in MeV) the electrostatic potential energy of the pair of protons
Consider the gas-solid equilibrium in the model when oscillators in the solid move in three dimensions. In the high temperature limit T>>hbarω find pressure P(T) as the function of temperature.
An electron initially at rest moves from one plate of a capacitor to another, through a potential di?erence of 2476 V, Find the speed with which the electron strikes the positive plate
Four charges are placed in a three-dimensional space. The charges have magnitudes 2 nC, -4 nC, 1 nC, and -9 nC. If a Gaussian surface encloses all the charges, what will be the electric flux through that surface?
A battery (V = 2.4 V) contains E = 2.2 kJ of energy. It is connected to a P = 8 W light bulb. Input an expression for the light bulb's resistance
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