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A wall is composed of two materials. Material 1 has a thickness of3.22 cm and a thermal conductivity of 0.1 while material 2 has athickness of 8.49 cm and a conductivity of 1. If the temperature difference inside to outside is 25 Co and the wall hasan area of 10 m2, what is the energy loss per second tothe nearest watt?
The atoms of a carbon dioxide molecule (C02) are arranged in a line, with the carbon in the center and the oxygens on either side at a distance of 0.116 nm. In the absence of vibrations, calculate the energy (in micro electronvolt) of the third ro..
A resistor R = 12 M ohms is connected in series with a capacitor C = .7 F and a battery V = 12 volts. what is the power supplied by the battery and the power dissipated as heat in the resistor
A very large plane of charge is oriented horizontally and has a constant charge distribution over the plane. A small insulating ball has charge +8.78 nC and mass 0.076 g. If the levitates 2.62 cm beneath the plane, and remains stationary, what is the..
a wire 1.80 m long carries a current of 13.0 a and makes an angle of 35.0 degrees with a uniform magnetic field of
A certain superconducting magnet in the form of a solenoid of length 0.520 m can generate a magnetic field of 9.10 T in its core when its coils carry a current of 80 A
A small vertical mirror hangs on the wall, 1.20 m above the floor. What was the change in the Sun's angle of elevation between your two observations
A CD has a mass of 16.5 g and a radius of 6.08 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 20.2 rad/s in 0.708 s. determine the net torque acting on it
Jack and Jill ran up the hill at 3.39 m/s. Thehorizontal component of Jill's velocity vector was 2.05 m/s. What was the angle of the hill
In 2000, NASA placed a satellite in orbit around an asteroid.Consider a spherical asteroid with a mass of 7.00×1015 kg and a radiusof 8.80 km, What is the escape speed from the asteroid
a spherical shell of a van de graff generator has an electric field strength e -10000 nc on the surface of its
A rock of mass 32kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 274N. What is the magnitude of the acceleration of the rock.
Find the tension in each of the two ropes supporting a hammockif the first one is at an angle of 13.5° above the horizontal and the second is at anangle of 35.4° above thehorizontal. The person sleeping in the hammock (unconcerned abouttensions an..
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