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Gas is confined in a tank at a pressure of 12.9 atm and a temperature of 28.3°C. If two thirds of the gas is withdrawn and the temperature is raised to 89.1°C, what is the new pressure in the tank?
atm
A 14.2-g piece of Styrofoam carries a net charge of -0.69 µC and is suspended in equilibrium above the center of a large, horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per unit area on the plastic..
a space station is a hollow cylinder of radius of 440m, that rotates to stimulate gravity by its centripetal acceleration. find the period of the rotation in seconds
A cubical box with sides of length a#consists of five metal plates which are welded together and grounded, Find the potential everywhere inside the box
Calculate the rotational inertia of a meter stick, with mass 0.83 kg, about an axis perpendicular to the stick and located at the 44 cm mark
The boom in the crane is free to pivot about point P and is supported by the cable that joins halfway along its 18 m length. the cable passes over a pulley and is anchored at the back of crane. the boom has a mass of 1700 kg, distributed evenly an..
An ocean thermal-energy power plant takes in warm surface water at a temperature of 26oC, What is the maximum possible efficiency of this power plant
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
An electron is in the ground state of an infinite square well. The energy of the ground state is E1 = 1.26 eV. What is the width of the square well
q1. two ocean liners each with a mass of 38000 metric tons are moving on parallel courses 92 m apart. what is the
A particle attached to a spring with k 50 N/m is undergoing simple harmonic motion, and its position is described by the equation x (5.7 m)cos(7.5t), with t measured in seconds.
A woman on a bridge 80.5 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. Find the speed of the raft
A box with a total surface area of 1.11 m2 and a wall thickness of 3.1 cm is made of an insulating material. Find the thermal conductivity of the insulating material
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