Physics, 22.07.2021 05:20 calvinclifton
Một dao động điều hoà theo phương trình :x=cos(10πt+π/4)(cm) Vsof thời điểm t=0 vật đang ở đâu và di chuyển theo chiều nào?vận tốc bằng bao nhiêu?
Answers: 3
Physics, 21.06.2019 18:40
Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.
Answers: 1
Physics, 21.06.2019 19:30
Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.
Answers: 1
Physics, 22.06.2019 07:30
Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20
Answers: 1
Physics, 22.06.2019 09:00
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.
Answers: 3
Một dao động điều hoà theo phương trình :x=cos(10πt+π/4)(cm)
Vsof thời điểm t=0 vật đang ở đâu và d...
English, 12.07.2021 01:00
Mathematics, 12.07.2021 01:00
Mathematics, 12.07.2021 01:00
Mathematics, 12.07.2021 01:00
Mathematics, 12.07.2021 01:00
Mathematics, 12.07.2021 01:00