Physics, 26.07.2019 16:10 svarner2001
When two electrical resistors with resistance r1 > 0 and r2 > 0 are wired in parallel in a circuit, the combined resistance r, measured in ohms (ω), is given by 1 r = 1 r1 + 1 r2 (a) find ∂r ∂r1 and ∂r ∂r2 after solving for r (e. g., r = . (b) describe how an increase in r1 with r2 held constant affects r. (will r increase or decrease? ) (c) describe how a decrease in r2 with r1 held constant affects r. (will r increase or decrease? )
Answers: 3
Physics, 22.06.2019 02:30
Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.
Answers: 2
Physics, 22.06.2019 06:00
Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h
Answers: 1
Physics, 22.06.2019 09:00
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 1
Physics, 22.06.2019 10:20
Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)
Answers: 2
When two electrical resistors with resistance r1 > 0 and r2 > 0 are wired in parallel in a c...
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