Physics, 25.07.2019 23:30 lol15arec001
Tania releases a javelin 1.2 meters above the ground with an initial vertical velocity of 20 meters per second. how long will it take the javelin to hit the ground? –16t2 + 20t + 1.2 = 0 –4.9t2 + 20t + 1.2 = 0 –4.9t2 + 20t = 1.2 –4.9t2+ 1.2t + 20 = 0
Answers: 1
Physics, 21.06.2019 21:00
When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other
Answers: 3
Physics, 22.06.2019 06:30
2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.
Answers: 2
Physics, 22.06.2019 10:00
Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
Answers: 1
Physics, 22.06.2019 13:00
4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?
Answers: 1
Tania releases a javelin 1.2 meters above the ground with an initial vertical velocity of 20 meters...
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