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Q. What do you mean by Time Dilation?
To an observer a moving clock always appears to run slower. The time interval between two events occurring at a given point in space in a frame of reference, moving with respect to the observer, appears to be greater as noted on clock at rest with respect to him than an identical clock in the moving frame of reference itself. This effect is called as time dilation meaning apparent lengthening of time. Let us consider two inertial frames of references S and S' where the axes, x and x', y and y' and z and z' are parallel and the origin O' of frames S' is moving with a uniform velocity v with respect to frames S as shown in fig. Let a clock is placed at the point x' in the moving frame S'. An observer O' in frame S' records that the clock gives two ticks at time t1' and at time t2' the time interval between these two ticks that occurs at the same place (means events are co local) in an observers frame of reference S' is called the proper time interval for events and then frame will be called proper frame. If these two ticks are observed in another frame i.e. laboratory frame of reference in which clock is moving in x direction with a uniform velocity v, they will be observed at different times. Suppose these two events occur at the instants t1 & t2 in the frame S moving in the x direction with a velocity - v relative to the frame S'. the time interval as observed in frame Sis observed time.
A test tube holder An appropriate test tube holder can be made by bending strong spring wire made of iron or brass into the shape shown in the diagram. Wire from a coat hanger
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a balloon is filled with 100 kg of helium, and that the velocity is 2.0 m / s what is the external kinetic energy?
Define, with the help of a schematic diagram, the principle and working of a Light Emitting Diode. What criterion is kept in mind whereas choosing the semiconductor material for su
What is calculated constraint relation?
average or mean value of AC
Compared with an atom of atomic weight 12 and atomic number 6, the atom of atomic weight 13 and atomic number 6: (1) Contains more neutrons (2) Contains more electro
Q. In an ideal transformer, the transformer ratio is 1:20.The input voltage and the input power are 6 V and 600 mW respectively. Compute the primary and the secondary currents.
Problem The work done by a force as it acts on an object equals the force times the displacement times the cosine of the angle between the force and displacement vectors. a
Q. What are the limitations of electron microscope? An electron microscope is operated merely in high vacuum. This prohibits the utilize of the microscope to study living organ
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