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How fast is 1500 rpm?
1500 rotations per minute. That's crank speed.
What is bumping in reciprocating compressor?
bumping clearance is the clearance between piston and head ,piston and crank endside
How have calculators changed over time?
Calculators have changed drastically the first calculator was an abacus. The Arithmometer (1820) was for add, subtract, multiply, and divide. The Odhner (1875) was made by Odhner who invented a pinwheel calculator which used a hand crank to complete the computation. The Comptometer (1885) was made by Felt, he invented the first calculator using keys to push for number entry and calculations. The Standard calculator (1901) was made by Hopkins who used two rows of five buttons representing the digits 0 through 9 to perform math computations. The standard ten digit keyboard (1911) we use today was made by Sundstrand who brought the design from Sweden to the United States. The first commercial calculators (1914) began entering businesses and the use of calculators began to be popular. We have been modifying calculators a little at a time since then.
Kate's age 13 years ago is half her age 13 years later. What is her present age?
Kate is 39 years old. Let's break it down. Let's call Kate's age K. Kate's age 13 years ago is K - 13, and her age 13 years from now is K + 13. Her age 13 years ago is half of what it will be in 13 years. The equation that says that is K - 13 = (K + 13) divided by 2. Turn the crank and out pops the answer. K - 13 = (K + 13) divided by 2 [Multiply both sides by 2] 2(K - 13) = K + 13 [Apply the distributive property of multiplication] 2K - 26 = K + 13 [Subtract K from both sides] K - 26 = 13 [Add 26 to both sides] K = 39 Check work. The 39 - 13 = 26, and the 39 + 13 = 52. The 26 is half of 52. We're good.
Is 43 degress cold?
Oh, dude, 43 degrees? That's practically beach weather! I mean, who needs a coat when it's practically a heatwave outside? But hey, if you're not used to the tropical paradise of 43 degrees, maybe throw on a light sweater just to be safe.
