Physics, 30.03.2021 01:00 hflores0001
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In some circuits that are used for decorating, one burned-out lightbulb will prevent all the other lightbulbs from lighting.
In other circuits, one burned-out lightbulb will have no effect on the other lightbulbs.
In which of these circuits will the other lightbulbs still light even if one bulb is burned out?
Answers: 3
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, 21.06.2019 23:00
If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10
Answers: 1
Physics, 22.06.2019 04:30
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
Answers: 1
Physics, 22.06.2019 09:10
The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island
Answers: 1
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In some circuits that are used for decorating, one burned-out lightbulb will prevent all the oth...
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