Explain law of conservation of momentum
An astronaut who was outside repairing his spaceship with a wrench lost his tie rope. Now he is stranded in space. Unfortunately, you can't swim in space. How can the law of conservation of momentum help the astronaut return to his ship
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The mixture was then heated and held at boiling for 45 minutes. 0.2533 g of the precipitate, barium sulfate, was filtered off, washed and dried. Determine the identity of the halogen, X.
In the figure below (part a), two blocks are connected by a lightweight, flexible cord which passes over a frictionless pulley. (a) If m1 = 2.8 kg and m2 = 5.2 kg, what is the acceleration of the two blocks? (b) What is the tension in the cord?
The excess acid then requires 30.10 mL of 0.1220 M NaOH for complete neutralization. Calculate the % Na2CO3 (MM = 105.99 g/mol) in the sample.
75.0 mL of a 1.40 M solution is diluted to a total volume of 278 mL. A 139-mL portion of that solution is diluted by adding 117 mL of water. What is the final concentration? Assume the volumes are additive.
A car drives north at 46mi/h for 10min and then turns east and goes 5.0mi at 56mi/h . Finally, it goes southwest at 30mi/h for 6.0min. What's the car's displacement?
A 30.1-g sample of Ne gas exerts a certain pressure in a container of fixed volume. What mass of Ar is required to exert half the pressure at the same conditions of volume and temperature?
It is desired to inflate a baggie with a volume of 842 milliliters by filling it with oxygen gas at a pressure of 1.21 atm and a temperature of 306 K. How many grams of O2 gas are needed?
A shopper walks from the door of the mall to her car 250 m down the line of cars, then turns 90 degrees to the right and walks an additional 60 meters. What is the magnitude of the displacement of her car from the mall door?
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