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In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 12.0 oC. The temperature at the inside surface of the wall is 19.1 oC. The wall is 0.11 m thick and has an area of 8.8 m2. Assume that one kilowatt hour of electrical energy costs $0.10. How many hours are required for one dollar's worth of energy to be conducted through the wall?
what is the speed of the proton in the beam.define the spread in these values.
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 410 N and F2 = 376 N. (Assume up and to the right as positive directions.), What is the resultant of these two forces
A 8 g bullet has a speed of 180 m/s and embeds itself into a 500 g block. What is the speed of the block after the collision
A person throws a 1/2 kg brick out the window. What would be the resultant velocity of the wagon
A 0.75?F capacitor is charged to 90V . It is then connected in series with a 35? resistor and a 150? resistor, How much energy is dissipated by the 35? resistor
A 0.700-kg ball is on the end of a rope that is 1.30 m in length. The ball and rope are attached to a pole, determine the tangential speed of the ball
A thin lens has a focal length of 10 cm. An object is located 15 cm to the left of the lens. What is the total magnification of the lens system
A 28.9-g bullet is fired from a rifle. It takes 3.86 × 10-3 s for the bullet to travel the length of the barrel, find the average net force exerted on the bullet
Calculate the force on a 1 meter long length of wire carrying a 5 amp current in a magnetic field of .75 teslas that act perpendicular to the wire. determine the change in the acting force on the wire
Find the total capacity, total charge and the voltage across C1 and C2 given C1= 15nF and C2= 25nF are connected in parallel across a 200 volt supply
A positive charge of 0.900? C is located in a uniform field of 1.05×105 N/C. How close are the two charges
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 880 J/s for each square meter of its surface. What equilibrium temperature does the collector reach
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