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On a cold winter day, the outside temperature is -5.0 °C while the interior of a well-insulated garage is maintained at 20.0 °C by an electric heater. Assume the walls have a total area of 75 m2, a thickness of 0.15 m, and a thermal conductivity of 0.042 W/(m · C°). What is the cost to heat the garage for six hours at these temperatures if the cost of electricity is $ 0.11/kWh?
What is the location of an object for which the magnitude of the image distance is one-fourth the magnitude of the object distance
An LC circuit consists of a capacitor, C = 1.74 µF, and an inductor, L = 5.32 mH. The capacitor is fully charged using a battery and then connected to the inductor. An oscilloscope is used to measure the frequency of the oscillations in the circui..
A car initially traveling at 29.5 meter per second undergoes a constant negative acceleration of magnitude 1.90 m/s2 after its brakes are applied. Find the angular speed of the wheels when the car has traveled half the total distance
An electronics assembly firm buys its microchips from three different suppliers; half of them are bought from firm X , whilst firms Y and Z supply 30% and 20%, respectively.
The 1050.kg steel beam shown below is supported by two ropes. What is the tension in each rope
Light travels at a speed of 1.947 × 108 m/s in a certain substance. What is the index of refraction of this substance
In 0.975 s, a 14.1-kg block is pulled through a distance of 3.32 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
A standing wave on a string is produced when one end is fixed and the other is driven by a 76 Hz oscillator, what is the total length of the string in meters
Normally, women possess about 4.5 million red blood cells in each cubic millimeter of blood. If the blood flow through the heart is 250 milliliters per minute, how many red blood cells flow through a women's heart each second?
A slingshot will shoot a 10-g pebble 22.0 mstraight up. How much potential energy is stored in the slingshot's rubber band
suppose that a block sliding on a greased horizontal surface experiences a drag force f -cv32 for positive velocity v
A student throws a baseball at a large gong 76 m away and hears the sound of the gong 1.95758 s later. What was the average speed of the base- ball on its way to the gong
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