The rope which winds on the drum
Wheel of radius r is driven by an arm OA. It is driving (without slip) wheel of a radius r2 which is fixed to a drum of radius r1. Load G is attached to the rope which winds on the drum. Calculate the speed of load G if the arm OA moves at n rev/min
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In the decomposition of hydrogen peroxide, the percentage yield of oxygen is 93%. What is the actual yield in grams of oxygen if you start with 100 grams of H2O2? The reaction proceeds according to the equation 2H2O2(l)=2H2o(l)+O2(g).
A rubber ball is dropped and bounces vertically from a horizontal concrete floor. If the ball has a speed of 2.8 m/s just before striking the floor and a speed of 2.0 m/s just after bouncing, what is the average force of the floor on the ball? Ass
What is the bond enthalpy for 1-fluorobutane? So how fast would its hydrolisis be?
What is the molar mass of lysine if 750.0 mL of a solution containing 8.60 g of lysine has an osmotic pressure of 1.918 atm at 25°C?
Wheel of radius r is driven by an arm OA. It is driving (without slip) wheel of a radius r2 which is fixed to a drum of radius r1. Load G is attached to the rope which winds on the drum.
Tartaric acid, H_2C_4H_4O_6, has two acidic hydrogens. The acid is often present in wines and precipitates from solution as the wine ages. A solution containing an unknown concentration of the acid is titrated with rm NaOH. It requires 23.65 mL of
A ball is thrown upward from the ground with an initial speed of 30.0 m/s, at the same instant another ball is dropped from a building 100m high. a) at what time after the ball is dropped will the balls be at the same height. b) What will the two b
Calculate the pressure of a helium sample at -207.3°C and 768 mL if it exerts a pressure of 175 kPa at 25.0°C and 925 mL
A 12.0g- sample of a gas has a volume of 5.25g at 28 celcius and 757mmHg If 2.7g of the same gas is added to this constant 5.25L- volume and the temperature raised to 64 celsius, what is the new gas pressure?
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