7 Name some manual tools to which we
impart translational motion or
rotational motion when in...
Physics, 27.10.2020 17:50 sneckoencko
7 Name some manual tools to which we
impart translational motion or
rotational motion when in use.
Answers: 3
Physics, 21.06.2019 13:00, erickamiles1797
What is the kinetic energy of a 10-kg bicycle moving at 10 m/s
Answers: 3
Physics, 21.06.2019 17:00, edwardp03418
Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?
Answers: 1
Physics, 21.06.2019 17:10, Bamaboy8804
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
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