What is meant by length contraction? ii). Hence, what is the length of a meterstick measured by an observer travelling at α). 1610km/hr and β). 0.8c [c =3.0 x10^8 m/s] b) i). What is meant by Time dilation? ii). Hence, a clock on a space rocket ticks off at a time interval of 1hour. What is the time elapse on earth if the space rocket is travelling at a speed α). 1610km/hr and β). 0.8c ? [c =3.0 x10^8m/s] 7MARKS/EV c) i). A 50 grams in radionuclide decays 45 grams in 240 years. What is the half- life of the radionuclide? ii). If the energy of the hydrogen atom is -13.6 eV/n^2, determine the energy of the hydrogen atom in the state n= 1,2,3,4,5 and hence the energy required to transition an atom from the ground state to n=5? [ 1eV = 16 x10-19 J , h = ]

Q: devise a system for you and three friends, at rest with you, to synchronize your clocks if your…

A: Given:-  1) devise a system for you and three friends, at rest with you, to synchronize your clocks…

Q: a). i). John and James are identical twins, James is placed in a spacecraft and sent to Mars at the…

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Q: . As observed in a control mission on Earth, satellite A is moving toward satellite B at 0.9c and…

A: Let the direction in which satellite A is moving be positive. Similarly, the direction of satellite…

Q: 9. Which of the following was Einstein’s Second Postulate to the Special Theory of Relativity? The…

A: Einstein’s two postulates First postulate It states that the laws of physics are the same and can be…

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A: Given, speed v = 0.5 c            Observer time T = 15 h From Time Dilation, the relationship…

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Q: b). i). What is meant by Time dilation? ii). Hence, a clock on a space rocket ticks off at a time…

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Q: 1. A supertrain of proper length 210 m travels at a speed of 0.86c as it passes through a tunnel…

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Q: 3. When at rest an elementary particle has an average lifetime of 2.60*10^-8s. An astrophysics lab…

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Q: 3. Two spaceships are traveling with a relative velocity of 2.33 x 10^8 m/s. Both carry identical…

A: Relative velocity of the two space-vehicles is Both the space-vehicles carry identical…

Q: what will be the velocity of light as seen by an observer at rest?

A: according to Galileo's classical view of relativity light is treated as all other things.

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Q: Does any clock in this problem measure the spacetime interval between the events? If so, which one…

A: The clock onboard the alien spacecraft measures spacetime intervals.

Q: Question 2

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Q: Ingii is craft is 20.0 m long and that the identically constructed craft you are sitting s 19.0 m…

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Q: relativistic momentum

A: Given speed of electron v=0.75c rest mass of the electron m0=9.1×10-31kg Speed of light c=3×108m/s

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Q: 6. Relativity. A particle called the muon has a life time of 2.2 usec, in its rest frame, before it…

A: Time dilation: Time observed in a moving frame appears to be different as observed in a frame that…

Q: . A train with a proper length or length at rest of 200 m is traveling at a relativistic speed. If…

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Q: The formula for length contraction gives the length of an interval on a ruler moving with velocity v…

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A: Mass of an electron, m = 1.6×10-19 C electron is moving with velocity, v = 0.8 c

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Q: Which of the following is true about time dilation? A. The time measured by a moving observer…

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Q: Why do we not observe relativistic effects in our daily lives? O Because motion is relative. O…

A: Answer:- Because the speeds we move at are much less than the speed of light.

Q: Question 3

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Q: a) Calculate the kinetic energy required to accelerate a single proton from a rest position to…

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Q: Problem 3. One of the predictions of the special theory of relativity is that the "rest mass energy"…

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Frame of reference

In physics, a frame of reference is a coordinate system used to specify either the position or the orientation or velocity of a body. The origin of the coordinate acts as a reference point for measuring the position or relative motion of a body. The coordinate system can be a cartesian coordinate, cylindrical coordinate, or a polar coordinate.