Physics, 07.12.2020 20:00 zoriahmendoza
DESPERATE WILL GIVE BRAINLIST
Consider the geologic time scale shown below. A scientist discovered two fossils. Fossil A is from the Triassic time period. Fossil B is from the Cambrian time period. Which one is older?
Question 10 options:
A is older.
B is older.
They are the same age.
We cannot determine which one is older.
Answers: 2
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 07:00
Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.
Answers: 3
Physics, 22.06.2019 10:30
Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.
Answers: 1
Physics, 22.06.2019 11:00
A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?
Answers: 3
DESPERATE WILL GIVE BRAINLIST
Consider the geologic time scale shown below. A scientist discovered...
Mathematics, 11.12.2019 18:31
Spanish, 11.12.2019 18:31
History, 11.12.2019 18:31
Mathematics, 11.12.2019 18:31
History, 11.12.2019 18:31
Mathematics, 11.12.2019 18:31
Mathematics, 11.12.2019 18:31
Mathematics, 11.12.2019 18:31
Chemistry, 11.12.2019 18:31
Health, 11.12.2019 18:31
History, 11.12.2019 18:31
Mathematics, 11.12.2019 18:31