Answers: 1
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 13:10
The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.
Answers: 3
Physics, 23.06.2019 08:10
Aweather forecaster uses doppler radar to predict the track of a storm near the town of meadowlands. when the doppler signal is pointed at the storm from the town's center, the frequencies of the waves appear to be decreasing. what should the weather forecaster predict? a. that the storm will move around the edges of meadowlands without hitting the tosis center o b. that residents should be prepared, because it is impossible to know whether the storm will hit o c. that the storm is moving toward meadowlands and that residents should be prepared d. that the storm is moving away from meadowlands and is not likely to hit the town
Answers: 3
The epicenter is where an earthquake begins deep below the crust of the earth. A. true
B. fals...
B. fals...
Mathematics, 06.10.2019 18:30
Chemistry, 06.10.2019 18:30
Law, 06.10.2019 18:30
English, 06.10.2019 18:30
Physics, 06.10.2019 18:30
English, 06.10.2019 18:30
Physics, 06.10.2019 18:30
Advanced Placement (AP), 06.10.2019 18:30
Social Studies, 06.10.2019 18:30
History, 06.10.2019 18:30
Mathematics, 06.10.2019 18:30
History, 06.10.2019 18:30
History, 06.10.2019 18:30