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Electronic flash units for cameras contain a capacitor for storing the energy used to produce a flash. In one such unit the flash lasts for 0.00129 s with an average light power output of 1,657 W. If the conversion of electrical energy to light is 95% efficient (the rest of the energy goes to thermal energy), what is the capacitance? Assume the camera batteries can create a potential difference of 12 V between the capacitor plates. (answer in F.)
The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. Calculate the energy stored in the capacitor
Two long parallel wires carry currents of 1.55 A and 5.51 A. Find the separation distance of the wires expressed in millimeters
An unidentified flying object (UFO) flashes across the night sky. A UFO enthusiast on the top of Pike's Peak determines, how long is the UFO according to its pilot
Your report should comprise be in the form of a two page memo/document that discusses the regulations and explain how they will apply to your hiring process.
What is the distance between the two traps?
A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 12.6 rad/s, Find the student's final angular velocity
To the left of the lens is a cube having a face area of 100 cm2. Determine the area of the image
A service station charges a battery using a current of 6.7 A. for 3.0 hr. How much charge passes through the battery
A 362 g object is attached to a spring and executes simple harmonic motion with the period of 0.200 s. If the total energy of the system is 6.71 J.
A uniform disk of radius 0.519 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
14 6C (mass = 14.003242 u) undergoes beta decay to 14 7N (mass = 14.003074 u). Write the complete decay formula for this process. Find the maximum kinetic energy of the emerging electrons.
An average temperature of the rest of the universe
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