What is the image distance in front of a concave mirror
A coin is placed 6.32 cm in front of a concave mirror. The mirror produces a real image that has a diameter 3.93 times that of the coin. What is the image distance?
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The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 3.75 times 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.22 m2. How much energy does this wav
If 124 kJ of heat are absorbed in a reaction that forms nitricoxide from nitrogen and oxygen, what mass of NO must have been produced? What mass of N2 was consumed?
If the oil tank is insulated, so there is no heat transfer from the oil to the surroundings, how much new disorder is produced in this process? By how much did the entropies of the oil and the forging change?
Researchers often are particularly interested in the subset of a market that contributes most to sales (for example, heavy beer drinkers or large-volume retailers). What type of sampling might be best to use with such a subset?
Calculate the work output and the heat supplied per kg of steam for the plant, assuming idea processes and neglecting the feed pump term. Calculated also the specific steam consumption and the cycle efficiency.
One tyype of electromagnetic radiation has a frequency of 107.1 MHz, another type has a wave length of 2.12x10^-10m and another type of electro magnetic radiation has photons with energy = to 3.97x10^-19j/photon.
Energy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is one kilocalorie, defined as 1 kcal = 4186 J. Metabolizing 1 g of fat can release 9.00 kcal.
If a cylinder is maintained at 70 degrees C (5 cm dia.) and loses heat to the surrounding air (30 degrees C) by natural convection, what's the heat transfer rate per unit length of the cylinder?
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