Physics, 01.01.2022 01:00 quiyansimmons15
what minimum work is required to get the cylinder rolling without slipping at a rotational speed of 20 s−1 ?
Answers: 2
Physics, 22.06.2019 07:10
1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?
Answers: 3
Physics, 22.06.2019 16:30
What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?
Answers: 2
Physics, 24.06.2019 00:30
An alpha particle (which is a helium nucleus, q = +2e, m = 6.64 × 10-27 kg) is emitted in a radioactive decay with kinetic energy 7.23 mev. what is its speed?
Answers: 3
Physics, 24.06.2019 02:20
For a solution of ethanol and water at 20°c that has 0.2 mole fraction ethanol, the partial molar volume of water is 17.9 cc/mole and the partial molar volume of ethanol is 55.0 cc/mole. what volumes of pure ethanol and water are required to make 1 liter of this solution? at 20°c the density of ethanol is 0.789 g/cc and the density of water is 0.998 g/cc.
Answers: 3
what minimum work is required to get the cylinder rolling without slipping at a rotational speed of...
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