In our previous lesson, we learned that systems are a group or collection of objects that may not be similar but they work together to fulfill a purpose. How are systems and models connected?

b.transmitters send radio waves, and receivers capture radio waves.

the answer is 3.1 his answer is wrong mines is right

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19