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An object in the shape of a thin ring has radius a and mass M. What is the gravitational force that the sphere exerts on the ring-shaped object
A flywheel in the form of a uniformly thick disk of radius 1.68 m, Calculate the constant torque required to stop it in 4.50 min
Determine the concentrations (in M) of acetic acid and sodium acetate in 0.2 M 'acetate' buffer, pH 6.0. The pKa for acetic acid is 4.76.
A uniform thin rod of mass 4.19 kg pivots about an axis through its center and perpendicular to its length. What must the length of the rod be so that the moment of inertia of the three-body system w
A 107-kg horizontal platform is a uniform disk of radius 1.85 m and can rotate about the vertical axis through its center. Find the moment of inertia of this system, consisting of the platform and its
A sphere of radius 3.09 cm and a spherical shell of radius 9.22 cm are rolling without slipping along the same floor. what should the ratio of the sphere\'s angular speed to the spherical shell\'s ang
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s), what is the magnitude of the average angular acceleration of the disk
The Dyson sphere is an hypothetical spherical structure centered around a star. Inspired by a science fiction story, What is the net gravitational force Fin on a unit mass located on the inner surface
The Gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder. At some point, What is the maximum rotational speed at which the riders will n
The two stars in a certain binary star system move in circular orbits. The first star, Alpha, has an orbital speed of 36.0km/s. The second star, Beta, What is the mass of the star Beta and alpha
Suppose we want a soln containing 150 micrograms of the protein at a concentration of .5 mg/ml. To do this we will first evaporate the liquid from enough of the protein soln to get 150 micrograms. H
Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of NO2(g).
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [N2]eq = 3.6 M, [O2]eq = 4.1 M, [N2O]eq = 3.3 × 10-18 M.
A sodium chloride solution is made at 68 deg F that contains 16.28 g of NaCl in 100 cc of fresh water. The fresh water density is 0.9982 g/cc. What is the density of the solution in g/cc and Lbm/gal
A day on a distant planet observed orbiting a nearby star is 31.7 hours. Also, a year on the planet lasts 79.5 Earth days.* Calculate the average angular speed of the planet
During the spin cycle of your clothes washer, the tub rotates at a steady angular velocity of 32.7 rad/s. Find the angular displacement of the tub
100 ml of 1 M acetic acid (pKa 4.76) are placed in a flask. The following volumes of 1 M KOH are added, and the total volume is adjusted to one liter with water.
Water soluble proteins do not contain amino acids with hydrocarbon R-groups. The hydrocarbon chains on these amino acid R-groups aren't long enough to make them not soluble in water.
Two slits with a separation of 8.5 x 10^(-5) m create an interference pattern on a screen 2.3 m away. find the wavelength of the light used in the experiment
A particle of mass 0.350 kg is attached to the 100-cm mark of a meterstick of mass 0.200 kg. Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the
A 130g oscillator has a speed of 124cm/s when its displacement is 2.10cm, What is the oscillator's maximum speed
Draw a Lewis structure for ammonia NH3-.Show all unshared pairs and formal charges, if any. Assume that bonding follows the octet rule.
Water flowing through a hose at 4.0 m/s fills a 800L child's wading pool in 7.0min. What is the diameter in cm of the hose
if the observed rate constant for the oxidation reaction at 35 C is 6.75*10^-2 min^-1, and at 25 C is 3.25*10^-2 min ^-1. what is the activation energy for the reaction
A square room has 3 mirrored walls of length L with one side missing. A laser is fired from the center of the open side of the room with an angle of incidence, I, what must the angle of incidence be