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Eight 5 µC charges are located at the vertices of a unit cube centered about the origin with 1.0 mm edges. How much work does it take to bring a 2 µC charge from infinity to the origin?
A small bar magnet experiences a 2.1 x 10^-2N*m torque when the axs of the magnet is at 45 degree to a 6.00 *10^-2 T magnetic field. What is the magnitude of its magnetic dipole moment?
A 6.5-µF capacitor is connected in series with 4.2 MO resistor, and this combination is connected across an ideal 20-V DC battery. What is the current in the circuit when the capacitor has reac
Calculate the energy difference between the ("spin up") and ("spin down") levels of a hydrogen atom in the 1 state when it is placed in a 1.60 magnetic field in the negative z-direction.
As the bubble rises to the surface, the pressure decreases and the volume of the bubble therefore increases. The temperature of the water is constant. Find the final volume of the bubble if its in
A 68.5 kg astronaut is doing a repair on the space station. She throws a 2.25 kg tool away from her at 3.20 m/s. With what speed and direction will she begin to move?
A spaceship moving away from Earth at 0.67 c fires a particle beam toward Earth, with speed 0.74 c relative to the ship. At what speed does Earth receive the particles? At what speed does Earth rece
A boy and a girl are balanced on a massless seesaw. The boy has a mass of 75 kg and the girls mass is 50 kg. If the boy sits 2.0 meters from the pivot point on one side of the seesaw, where must the
Find the magnitude of the torque on the coil when the magnetic field makes an angle of 26° with the normal to the plane of the coil.
Light with a frequency of 2 X 10^15 Hz shines on a copper surface (=4.70 eV). What is the maximum kinetic energy of the photoelectrons?
If the total length of wire is 18 m, how much power is dissipated in the wiring?
If the work function of aluminum is 4.3 eV, does the ensuing photon have enough energy to knock an electron out of aluminum? If so what is the wavelength of the electron that comes out of the alumin
11 g of sodium bromide NaBr is mixed with 9 g of butanol CH3CH2CH2CH2OH to yield 258 mg of bromobutane CH3CH2CH2CH2Br. Find the number of mole of all reactant involved in the reaction.
A 230.0 g piece of lead is heated to 80.0 deg C and then dropped into a calorimeter containing 633.0 g of water that initally is at 16.0 deg C. Neglecting the heat capacity of the container, find th
How much heat is required to change a 38.6 g ice cube from ice at -14.7 deg C to water at 65 deg C?
An analysis of the compound shows that it contains 41.8 % C, 4.7 % H, 37.3 % O and 16.3 % N. Calculate the molecular formula.
A 78.3 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 522 (food) Calories. How high must the person climb? (1 (food) Calorie = 10
At 25 degree C, the vapor pressure of pure water is 23.76 mmHg and that of seawater is 22.9 mmHg. Assuming that seawater contains only NaCl, estimate the molal concentration.
Calculate the y-component of the magnetic force acting on a piece of wire of length L = 18.0cm.
After the system reached equilibrium, the total pressure was found to be 7.43 x 10^-2 atm. Calculate the value of kp for this reaction.
A bridge is made with segments of concrete 94 m long (at the original temperature). If the linear expansion coefficient is 1.2 × 10-5 (C)-1, how much spacing is needed to allow for expansion fo
Without moving, you will suddenly see the penny magically appear. If you look into the cup at an angle of 70.0 Degrees to the normal, at what angle to the normal must the penny be located in order f
The tank contains 4.98 mol of methane (CH4) and 0.66 mol of ethane (C2H6). What is the partial pressure (in kPa) of each of the component gases in the tank? Show ALL work (Formal Method).
How many moles of KBr are present in 150 mL of a 0.275 M solution? (c) How many milliliters of 6.1 M HCl solution are needed to obtain 0.100 mol of HCl?
If you dilute 10.0 mL of the stock solution to a final volume of 0.250 L, what will be the concentration of the diluted solution?