Physics, 05.02.2021 17:40, gemouljr

Will an object experience a greater force of gravity on the earth or moon? Why?

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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 ?

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Physics, 22.06.2019 03:30, cookies1164

What is the momentum of a 2 kg object moving at 15 meters per second

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Physics, 22.06.2019 06:00, ahmedeldyame

Why don't you see your reflection in water with waves or repples

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Physics, 23.06.2019 01:30, kris1920

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.