Determine the pressure if the helium is compressed
A sample of helium has a volume of 325 mL and a pressure of 655 mm Hg. What will be the pressure if the helium is compressed to 125 mL (T constant)?
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A 0.19-kg apple falls from a branch 3.5 m above the ground. a) Does the power delivered to the apple by gravity increase, decrease, or stay the same during the time the apple falls to the ground? Explain. Find the power delivered by gravity to the
A mixture of gases contains 8.57 g of N2, 5.26 g of H2,and 3.71 g of NH3. If the total pressure of the mixtureis 1.79 atm, what is the partial pressure of each component?
The 2 kg slender bar is supported by cord BC and then released from rest at A. Determine the initial angular acceleration of the bar and the tension in the cord.
The cheetah is one of the fastest-accelerating animals, because it can go from rest to 12.8 m/s (about 29 mi/h) in 1.9 s. If its mass is 101 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Expr
A 2.30 x 102-N force is pulling an 75.0-kg refrigerator across a horizontal surface. The force acts at an angle of 23.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 6.00 m. Find the
How much work is done by the pushing force when the box starts from rest at the bottom and reaches the top of the same ramp with a speed of 1.50 m/s?
If the product is IO2- and the reactant isIO3-, calculate the change in the oxidation state of iodine (oxidation state of iodine in product minus the oxidation state of iodine in the reactant).
A skier slides horizontally along the snow for a distance of 23 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is µk = 0.050. Initially, how fast was the skier going?
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