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A proton moves from a location where V = 69 V to a spot where V = -51 V. (a) What is the change in the proton's kinetic energy?
A capacitor of 12 farrads that is charged to a level of 44 volts is attached to a resistor of 13ohms. what is the time constant of this circuit? what will the charge on the capacitor be after 2 uni
A system is established by combining 50 grams of steam at 100 degrees Celsius with 320 grams of ice at 0 degrees Celsius. What is the temperature of this mixture when the system reaches equilibrium
A 568- physics student stands on a bathroom scale in an 880- (including the student) elevator that is supported by a cable. As the elevator starts moving, the scale reads 480. Find the magnitude of
If there is one free conduction electron for every silver atom in the solid state, what is the drift velocity of electrons when a potential difference of 1 x 10-5 V is applied to opposite faces?
What is the total amount of heat needed to convert a system containing 30 grams of ice at 0 degrees Celsius into steam at 100 degrees Celsius?
How much heat must be removed from a system containing 80 grams of water at 60 degrees Celsius in order to convert it to ice at 0 degrees Celsius?
The system of electrons has the minimum total energy possible. What is the least energy, in eV, a photon must have in order to excite a ground-state electron in this system to the lowest higher stat
Another wood sample prepared from an object recovered at an archaeological excavation gives a decay rate of 0.158 disintegration per second per gram of the sample. What is the age of the object?
The electrons in the beam were accelerated by a voltage of 3.0 kV; the beam was then steered to different points on the screen by coils of wire that produced a magnetic field of up to 0.50 T. What i
Write a detailed mechanism for the above conversion. Assume a chain initiation where light cleaves the C-Br bond to make Cl3C• and Br• radicals. Then go from there.
A 296 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal.
Two capacitors C1 and C2 are connected in series to a 9V battery. The magnitude of the charge on each plate of C1 is 7.5μC. The value of C1 is 2μF. What would be the equivalent capacitance if
A 40.0 cm diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is measured to be 5.20*10^5 N*m/C. What is th
A beaker with 185 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 4.80 of a 0.350 solution
A uniform, upward-riected electrical field exist in teh region between the plates, and the field exerts an electic force down on the electon. Describe the movement of the electron in the region.
How fast would she have been traveling if yellow light of wavelength 576 nm had been shifted to green with a wavelength of 554 nm?
How much heat would be required to warm earths oceans by 1.0 degrees C? the volume of the earths oceans is 137 x 10 to the 7th power and km to the 3rd power.. the density is 1.03g/cm to the 3rd pow
Two capacitors each have a capacitance C, and a third capacitor has a capacitance C/2. If the first two are connected in series, and the series configuration is connected in parallel to the third, h
An aluminum cup contains 225g of water and at 27 C. a 400-g sample of silver at an initial temperature of 87 C is placed in the water. a 40g copper stirre is used to stir the mixture until it reache
The melting point of pure simazine is 225 - 227 °C. If the melting point of your product was different, what could be the explanation? What are possible causes for obtaining a low percent yield
A satellite moves in a circular orbit around the Earth at a speed of 5300 m/s. Determine the satellite's altitude above the surface of the Earth. Determine the period of the satellite's orbit.
A student spots an unknown sample on a TLC plate. After developing in hexanes/ ethyl acetate 50:50, he/she saw a single spot with an Rf of 0.55. Does this indicate that the unknown material is a pur
A good rule of thumb is to use relativistic equations whenver the kinetic energies determined classically and relativistically differ by more than 1%. Find the speeds when this occurs for (a) electr