Which devices would be made using a diaphragm, a moving coil of wire and magnet?
...
Physics, 26.10.2019 11:43 Angel13613
Which devices would be made using a diaphragm, a moving coil of wire and magnet?
Answers: 2
Physics, 21.06.2019 17:10
Space-time metric ds2= -dt2+at2dx2+bt2dy2+ct2dz2 (a)how does the area of a rectangle with vertices at ( x=0, y=0, z=0 ), (1,0,0 ), ( 0,1,0 ) and (1,1,0 ) changes with time? (b) if a photon moving in the x direction starts from the origin at t=1, when does it reach x=l? (ds=0 for the trajectory of a photon.) (c) the proper time for a particle is defined by cd=ds. what is the proper time for a particle to move along the trajectory ( x(t)=t, y(t)=0, z(t)=0 ) from t=0 to 1 ? what is the condition on the parameter a so that the velocity of the particle never exceeds the speed of light ?
Answers: 2
Physics, 22.06.2019 17:30
The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element
Answers: 1
Physics, 22.06.2019 19:00
The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.
Answers: 1
Physics, 22.06.2019 19:30
Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match
Answers: 1
History, 31.07.2019 05:00
Mathematics, 31.07.2019 05:00
Mathematics, 31.07.2019 05:00
Mathematics, 31.07.2019 05:00
History, 31.07.2019 05:00
Biology, 31.07.2019 05:00
Mathematics, 31.07.2019 05:00
History, 31.07.2019 05:00