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A certain storm cloud has a potential difference of 2.00*108 V relative to a tree. If, during alightning storm, 55.0 C of charge istransferred through this potential difference and 1.00% of the energy is absorbed by the tree, how much water (sap in the tree) initially at 35.0°C can be boiledaway? Water has a specific heat of 4186 J/kg·°C, aboiling point of 100°C, and a heat of vaporization of 2.26multiplied by 106 J/kg.
Suppose that 2.8 moles of an ideal diatomic gas has a temperature of 1003 K, and that each molecule has a mass 2.32 Ã* 10^-26 kg, What is the internal energy of the gas
A narrow beam of 400-keV photons is incident normally on a 2 mm iron liner. What fraction of the photons has an interaction in the liner? What thickness of Fe is needed to reduce the fraction of photons that are transmitted without interaction to 10%..
A large stick is pivoted about one end and allowed to swing back and forth as a physical pendulum. what is its moment of inertia, about an axis through the pivot
Calculate the period of a ball tied to a string of length 0.3 m making 6.9 revolutions every second. Answer in units of s, Calculate the speed of the ball
A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
Imagine removing one electron from every atom in a tiny cube of gold 1 mm on a side. (Never mind how you would hold the resulting positively charged cube together.) Do the same thing with another such cube a meter away.
A 120g ball moving at 0.50 m/s in the + x direction is subject to a 0.25 N force in the - y direction for 2.5 s, Find the balls final speed
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. How long is the arm of the centrifuge
A 1.50 103-kg car starts from rest and accelerates uniformly to 15.8 m/s in 13.0 s. Assume that air resistance remains constant at 400 N during this time. Find the average power developed by the engine
A tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1330 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3 (Co)-1, How long is the wire
A boat crosses a river of width w=100m in which the cuerrent has auniform speed of 1.35 m/s. The pilot maintains a bearing perpendicular to the river and a throttle setting to give a constant speed of 2.00 m/s.
Unpolarized light with an intensity of 650 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
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