Physics, 16.06.2021 16:50, xxcooleduardo787xx
cho dòng điện I= 10A chạy qua dây dẫn thẳng dài, đoạn giữa được uốn thành vòng bán kính 2,0 cm , đặt trong không khí. Cảm ứng từ tại tâm của òng tròn là bao nhiêu?
Answers: 3
Physics, 22.06.2019 05:30, dashawn3rd55
Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.
Answers: 1
Physics, 22.06.2019 19:10, simmonss1185
3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0
Answers: 2
cho dòng điện I= 10A chạy qua dây dẫn thẳng dài, đoạn giữa được uốn thành vòng bán kính 2,0 cm , đặt...
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