Answer:
same
Explanation:
Acc. to Einstien's postulate of special theory of
Relativity ,
Velocity of the light beam is same in all frames of references
(a) If the freight car is at rest
The frame we can assumed as Non - inertial frame of reference
s
In the inertial frame of reference , velocity of the light beam has its own value as : 3 x 10^8 m/s
(b) If the freight car is moving , the frame we can assumed as Non -inertial frame of reference
In thus case also , The velocity of the light beam will also have the same value as ; 3 x 108 m/s
Well we can't see the picture that the teacher has, and we have to figure out what's in the picture from some clues in the answer choices. The picture seems to show an atom with 3 protons and 3 neutrons in the nucleus, and 3 electrons whizzing around the nucleus.
If that's what's in the picture, then Mike is correct (first choice), because the atomic number shows the number of protons in all atoms. There are 3 protons and the atomic number of lithium is 3.
Second choice . . . False, because electrons are not involved in the atomic mass.
Third and fourth choices . . . both false; sadly, Joan is woefully unclear on the concepts.
The answer is periosteum. Hope this helps!
Answer:
The distance is 0.9681 m.
Explanation:
Given that,
Length = 0.95 m
Mass of block = 7.9 kg
Stretches spring length = 1.06 m
another mass = 1.3 kg
Magnitude of restoring force acting in the spring equal to the magnitude of applied force
We need to calculate the spring constant
Using Hook's law,
Put the value into the formula
Put the value into the formula
We need to calculate the distance
Using formula of spring constant
Put the value into the formula
We need to calculate the total distance
Using formula of distance
Hence, The distance is 0.9681 m.