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Can a step-up transformer be used as a step down transformer in a circuit? What are the safety concerns with that?
A 25 kilogram chandeliers hang from a ceiling on a vertical 4.0 meter long wire. Find what will be the tension in the wire
A mass of 0.3 kg is connected to a mass less spring with a force constant k=20 N/m. The system oscillates horizontally on a frictionless surface with amplitude of 4 cm. What is the velocity of the mass when it is 2 cm away from its equilibrium positi..
Write a nuclear reaction for the neutron-induced fission of U-235 to produce Te-137 and Zr-87 How many neutrons are produced in the reaction
(a) Calculate the lowest energy of the electron in He+. Is it lower than that of H.(b) If this electron absorbs a photon and makes a transition to the 2p orbital, what is the frequency of the absorbed photon
An underwater scuba diver sees the Sun at an apparent angle of 26? from the vertical. What is the Sun's angle of inclination
Write down the condition that determines l1. Suppose now that the spring is stretched a further distance x beyond its new equilibrium length. Show that the net force (spring plus gravity) on the mass is F = -kx. That is, the net force obeys Hook..
A velocity selector has a magnetic field of magnitude 0.28 G perpendicular to an electric field of magnitude 0.43 kV/m. What energy must electrons have to pass through undeflected
An 11.0 µF parallel-plate capacitor with circular plates is connected to a 12.0V battery. What is the charge on each plate
Three thin rods each of length L are arranged in invertedU. The two rods on the arms of the u each have mass M; Where is the center of the assembly
Jack was exposed to fast neutrons; he received a radiation dose of 220rem rem on part of his hand, affecting 28.0grams of tissue. How much radiation did Jack receive
A worker drops a wrench from the top of a tower 88.00 m tall. With what velocity does the wrench strike the ground? (Suppose the positive direction is upward.)
A balloon contains 10 lbs of Helium at a temperature of 70 ?F. If the volume of the balloon is 300 ft3, what is the pressure of the balloon
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