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Problem: Only a small amount of the energy used in an incandescent light bulb (regular bulbs commonly used in households) is actually converted into light. What happens to the rest of the energy? How more efficient light bulbs (LEDs for example) are able to waste less energy? Please answer the following question ASAP.
You are tasked with putting together the schedule for a new subway line. How much time should you budget for the travel of a train between two stations that are 2.33 miles apart
An electron moving at a speed of vi= 0.960c in the positivex direction collides with another electron at rest, Based only on the original data given in the problem, use conservation of energy to find the speed of the second electron
Beginning at time t = 0, when the bead passes through x = 0 with speed 12 m/s, a constant force acts on the bead. Figure indicates the bead's position at times t0 = 0, t1 = 1.0 s, t2 = 2.0 s, and t3 = 3.0 s. The bead momentarily stops at t = 3.0 s..
You and your friend Peter are putting new shingles on a roof pitched at 24 degree. If the coefficient of kinetic friction between the box and the roof is 0.55, with what speed should you push the box to have it gently come to rest right at the edge..
A magnet in the form of a cylindrical rod has a length of 6.07 cm and a diameter of 0.992 cm. It has a uniform magnetization of 6.49 x 103 A/m. What is its magnetic dipole moment
A parallel-plate capacitor has plates of area 3.53 x 10-4 m2. What plate separation is required if the capacitance is to be 1470pF
The electric potential energy stored in the capacitor of a defibrillator is 92 J, and the capacitance is 180 ?F. What is the potential difference across the capacitor plates
A slide projector produces an inverted image on a screen that is 30 times larger than the view on the slide. The lens has a focal length of 12.0 cm. compute (a) the distance of the screen from the lens and (b) the distance of the slide from the lens.
Two trains are traveling toward each other at 31.0 m/s relative to the ground. One train isblowing a whistle at 1230 Hz. What frequency will be heard on the other train in still air
In a location where the speed of sound is 337 m/s, a 2000 Hz sound wave impinges on two slits 30cm apart. At what angle is the first maximumlocated?
A 1.9kg block slides along a frictionless surface at 1.7m/s . A second block, sliding at a faster 4.9m/s , What was the mass of the second block
Calculate the position of the final image. Calculate the relative size of the final image.
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