How do the measured densities of a body compare at rest and in motion?

Q: Would we notice a slowing down or speeding up of a clock if we carried it to the bottom of a very…

A: According to Einstein'd general theory f relativity, gravitation will slows down the time. If…

Q: How do the postulates of special relativity explain the behavior of matter moving at speed…

A:

Q: An oscillator flies by you at 0.6c relative to you. You measure

A: The time observed by the observer can be determined as, Here, t0, v, and c represent the…

Q: Why is an ordinary Cyclotron not suitable for the acceleration of electrons?

A: For the acceleration of electrons the  Cyclotron is not suitable. The mass of the electrons are…

Q: A twin who makes a long trip at relativistic speeds returns younger than her stay-at-home twin…

A: We have to know about Relativity.

Q: You watch a spaceship go past you at nearly the speed of light. The length of the spaceship that you…

A: If we measure the length of anything moving relative to our frame, we find its length L to be…

Q: assuming no molecules escape or are added, what happens to the masses of water in a pot when it…

A: Relativistically, the total energy of a system is conserved. According to Einstein's relativity…

Q: A galaxy is receding from earth at a velocity of 0.08 c, 8% of the speed of light. What wavelength…

A: According to the Doppler effect, ∆λλ=vc=0.08cc=0.08…

Q: Muons are elementary particles that are formed high in the atmosphere by the interactions of cosmic…

A: Cosmic rays are high energy charged particles that enter the upper layer of atmosphere from the…

Q: A 100m long (as measured in the spaceships frame) spaceship passes you at a speed of 0.6c. The…

A: Data  we have  length,L=100m velocity,v=0.6c Time,∆t'=5s

Q: 3- How fast must a meter stick be moving if its length is measured to shrink to 0.500 m?

A: Given length of scale by observed at rest L=0.5m Determine the speed of meter stick using the length…

Q: The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away from you at…

A: Speed of the ship moving away v=0.291c and speed of the torpedo with respect our ship u=0.343c where…

Q: Does special relativity allow anything to travel faster than light? Discuss.

A: Given: Does special relativity allow anything to travel faster than light? Discuss.

Q: What is the evidence for time dilation?

A: Time dilation will occur when there is a measurement of elapsed time between two clocks based on…

Q: How does the correspondence principle relate to special relativity?

A:

Q: How are the classical laws of conservation of energy and conservation of mass modified by modern…

A:

Q: Consider a thought experiment. You place an expanded balloon of air on weighing scales outside in…

A: When the balloon is kept outside, it receives thermal energy from Sun. This will result in increase…

Q: If you were on Earth monitoring a person in a rocket ship traveling away from Earth at a speed close…

A: Given: If you were on Earth monitoring a person in a rocket ship traveling away from Earth at a…

Q: You have an assistantship with a math professor in a future world where space travel is common and…

A: Write the formula for time dilation.

Q: Why our mass changes when we travel in elevator?

A: Mass is quantity of matter , it remains the same .Weight the person measured in a accelerating…

Q: What is different about the reference frames that apply to special relativity and to general…

A: Special relativity applies to all physical phenomena in the absence of gravity.

Q: Describe Inertial Frames Of Reference?

A: An inertial frame of reference has a constant velocity. This means that there is no acceleration…

Q: proton has total energy equal to 3 times its rest energy , calculate : 1- rest energy 2- relitive…

A: Total energy of proton equal to 3 times it's  rest energy And 1 eV = 1.6 x 10-19J 1J = 6.25 x 1018…

Q: Discuss with your friends how length contraction occurs for a racing car that travels at 200 miles…

A:

Q: What effect does mass have on spacetime?

A: The general theory of relativity gives the idea of geometry of curvature which implies the four…

Q: How can the mass be converted into energy?

A: According to Einstein's equation for mass equivalence, the mass can be converted into an equal…

Q: What is constant in Einstein’s second postulate?

A: The second postulate of special relativity is “Speed of light is same in every inertia frame of…

Q: Assuming no molecules escape or are added what happens to the mass of water in a pot when it…

A: According to Einsteins mass energy equivalence principle, energy and mass can be inter changeable…

Q: A 50-year-old astronaut goes off on a long-term mission in a spacecraft that travels at speeds close…

A: Age will definitely increase.In the Earth's frame 200 years have been elapsed.In the astronaut's…

Q: What is relativistic Doppler effect?

A:

Q: What does this expression represent 1/√(1-v^2/c^2) * O time dilation O relativistic factor O…

A: Correct option is -      (1) time dilation

Q: If you were traveling in a high-speed rocket ship, would metersticks on board appear to you to be…

A: A meter stick would appear normal for an observer on board in a high speed rocket ship.

Q: At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 4.0 year

A: Find explanation and answer in next step

Q: A healthy astronaut’s heart rate is 60 beats /min  Flightdoctors on Earth can monitor an astronaut’s…

A: The heart rate of an astronaut can be given, Here, N denotes the beats and ∆t0 denotes the proper…

Q: How Einstein felt in the aftermath of the bombings ?

A: solution as

Q: Calculate relativistic Doppler shift.

A: To determine: How to calculate the relativistic doppler shift

Q: What is meant by rest mass of a particle? Can it ever be zero.

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Q: Find the potential difference required to accelerate protons fromrest to 10% of the speed of light.…

A: Given data The final speed of the proton is given as v = 0.1c. The initial speed of the proton is…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.