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The amount of heat required to raise 1 kg of pure water by 1 C° is called ? I want to make handheld gimbal (gopro) with Tarot T-2D. I want to control tilt with "dimmer type switch". Is there pwm switch for that? How to find the Ka/ Kb value of FeSO4 if we know it is a .1M solution? Not sure how I would go about this? Write the english phase as an algebraic expression. Let x represent the number. The difference of three and half of a number? Macroscopic and microscopic description of coal?