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26.) A force of 35 newtons is applied over a distance of 0.1 meters to kick a football. What is the work done on the football?
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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 ?
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Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.
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How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects
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26.) A force of 35 newtons is applied over a distance of 0.1 meters to kick a football. What is the...
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