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A magnetic computer disk 8 cm in diameter in initially at rest. a small dot is painted on the edge of the disk. the disk accelerates at 600rad/sec^2 for 1/2 seconds, then coasts at a steady angular
A measurement of the heat produced when a known amount of sugar burns in a constant volume calorimeter would enable us to first calculate the molar Gibbs free energy change for the combustion of sug
Calculate the electric potential due to a dipole whose dipole moment is 5.1×10-30 C*m at a point 1.3×10-9 m away. If this point is along the axis of the dipole nearer the positive charge
A 65-kg swimmer jumps off a 10.0 m tower. The swimmer comes to a stop 2.0 m below the surface. Find the net force exerted by the water.
A water skier is pulled by a net force of 114 N and has an acceleration of 1.9 m/s2. What is the mass of the skier?
The mass of pure and dry BaSO4 precipitated obtained 0.9335g. What is the formula of the zinc sulfate hydrate? name this compound.
At this point she is disappointed at having seen no dolphins and heads straight for Treasure Island. What is the total distance Moe travels from the harbor to the island?
A 50.0 g Super Ball traveling at 28.0 m/s bounces off a brick wall and rebounds at 18.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 5 ms, what is the ma
Exactly 1.00 mole of an ideal gas undergoes an iso thermal expansion (T 300 K) from state A to state B. Find the gas's change in entropy for the process BA.
Bonnie and Clyde are sliding 470 kg bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 450 N of force while Bonnie pulls forward
An electric field with a magnitude of 156 N/C exists at a spot that is 0.15 m away from a charge. At a place that is 0.51 m away from this charge, what is the electric field strength?
Assuming that the light has an average wavelength of 510.0 nm, calculate how many such photons are emitted per second by a 80.0-W incandescent lightbulb.
Calculate the change in the sun's entropy when this radiation was emitted from the surface of the sun at a temperature of 5500 K.
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other?(Hint: Use charge conservation and solve for one of the initial charges. You will en
The free energy of formation of NO is 78 kJ mol¯1 at the temperature of an automobile engine (1000 K). What is the equilibrium constant for this reaction at 1000 K?
Find both the potential energy of the system when the car is at points a and b and the change in potential energy as the car moves from point a to point b , assuming y = 0 at point b.
The element Ag has two naturally occurring isotopes 109Ag and 107Ag, and its average atomic mass is 107.868 amu. The natural abundance of 107Ag is 51.87% and its atomic mass is 106.905 amu. Calculat
If the person weigh ing 100 lb requires 2000 Calories per day, how many Calories are needed by the person weighing 150 lb?
A proton is released from rest in a uniform field of magnitude +1.41e5 N/C. Find the speed of the proton after it has traveled 4cm and 40 cm.
A stone of mass 0.3kg is tied to a string of length 0.75m and is swung in a horizontal circle with speed v. The string has a breaking-point tension of 50N. What is the largest value v can have witho
calculate the probability that the particle will be located in the range 0.5a less than or equal x less than or equal 0.75a
Analysis of a reaction mixture showed that it had the composition. Calculate the reaction quotient Qc .
A rod supports a 2.35-kg lamp. a) What is the magnitude of the tension in the rod? b) Calculate the components of the force that the bracket exerts on the rod.
The resultant displacement has a magnitude of 170 cm and is directed at an angle of 65.0° to the positive x axis. Find the magnitude and direction of the second displacement.
The temperature is -34°C. What is the change in volume of the balloon as it ascends from 1.00 atm to a pressure of 240. torr?