Four protons (each with mass 1.7 × 10-27 kg and charge 1.6 × 10-19 c) are initially held at the corners of a square that is 6.2 × 10-9 m on a side. they are then released from rest. what is the speed of each proton when the protons are very far apart? (you may assume that the final speed of each proton is small compared to the speed of light.)
Answers: 3
Physics, 22.06.2019 15:50
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
Physics, 22.06.2019 18:10
Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)
Answers: 1
Physics, 23.06.2019 03:30
Astudent pushes a 40-n block across the floor for a distance of 10 m. how much work was applied to move the block? a. 4 j b. 40 j c. 400 j d. 4000 j
Answers: 1
Four protons (each with mass 1.7 × 10-27 kg and charge 1.6 × 10-19 c) are initially held at the corn...
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