How do we define the time interval of one "second" now, and keep track of elapsed time accurately enough to navigate spacecraft through the solar system, or place you on Earth with a GPS receiver? What place in space is our absolute reference point from which we measure distances in physics? If I climb a ladder more than a few feet  I am clearly in danger if I fall.   Being foolish, I think I can react fast enough to not hit the ground hard if I have more than 1 second to react.  How high would that be when a fall to the ground takes 1 second?  Hint:  The distance of fall is (1/2) a t2, where a is the acceleration  of a falling body and near Earth it is about 10 m/s2 for anything.

Q: If you travel 1 mile at 1 meter/sec and then travel another 1 mile at 2.6 meters/sec, how long did…

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Q: Explore the duality of time in philosophy and physics, considering concepts like the arrow of time,…

A: The duality of time is a fascinating concept that has been explored in both philosophy and physics,…

Q: How do we establish a standard time interval in physics and the standard unit of time, the  second?…

A: Option (1) is correct. Explanation- We know that the atomic clocks are world's most accurate clocks.…

Q: Explain the term observer in relativity.

A: The frame of reference is the inertial reference, in which one object is observed relative to other…

Q: For each of the quantities below, indicate whether they are distance, time, or velocity. Then…

A: Quantity Time, distance, or velocity Value Unit Year Time 3.156×107 s Light-year…

Q: Suppose we find an Earth-like planet around one of our nearest stellar neighbors, Alpha Centauri…

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Q: Suppose a spaceship of length L, is traveling at a high rate of speed v relative to an observer. To…

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Q: Question. Imagine that a starship flies past you, moving at half the speed of light. There is a…

A: Simple problem from special theory of relativity (Time dilation). Please have a good look

Q: In what ways did the astronomical observations of Galileo support a heliocentric cosmology? Describe…

A: The question is asking about how Galileo's astronomical observations supported the idea of a…

Q: If astronauts could travel at v = 0.902c, we on Earth would say it takes  (4.20/0.902) = 4.66 years…

A: Here we will apply Time dilation formulae

Q: give a short explanation for Length Contraction about how these things affect people’s observations…

A: Special theory of relativity is a topic in Physics where different behavior related to a system…

Q: Discuss space-like and time-like intervals giving examples. oont by snace.time

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Q: The sprinter trarela a distance of 18. m in t. Explanation of Solution Given The mass of the…

A: It is given that the initial velocity of the runner is 0m/s (the runner starts from rest) and the…

Q: A ball is dropped off an 80 meter cliff on a planet much like our own.The height of the ball t…

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Q: Give the consequences of the Postulates of the General Relativity.

A: The theory of general relativity states stat, the massive objects cause a distortion in space-time,…

Q: 1 Mass and Energy Use the equivalence of energy and rest mass, E = mc² to answer the following…

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Q: As measured on Earth the star Fomalhaut is 25.1 light years away. As measured by the crew of a…

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Q: Hello, please help me answer this general physics question attached below: Please note, that I…

A: Step 1: Step 2: Step 3: Step 4:

Q: A crew on a spacecraft watches a movie that is two hours long.the spacecraft is moving at high speed…

A: Given data: The time period of the movie is 2 hrs.

Q: (8) The clock on the Big Ben Tower in London reads 12 noon. If you travel away from the clock at a…

A: 8) In spacetime, the four dimensions are length, height, width, and time. If you are at rest with…

Q: in the second photo, when you plugged 6 in for t, shouldn't it be a = (9) - (0.25)(6)2? like since…

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Q: A star of mass 7x 100 kg is located at m/s

A: Calculate the distance between the star and the planet. r→=r→2−r→1r→=⟨6×1012,2×1012,0⟩…

Q: From a launch tower located at point B, a rocket goes into space with a velocity ? (ℎ) = 3ℎ + 2 in…

A: The solution can be given as follows:-

Q: hours (1 Earth day), how much more (or less) time will elapse as measured by a clock "at rest" on…

A: Here,  is radius of earth,  is altitude above the surface of the earth, G is gravitational constant,…

Q: 1. Mercury's orbit is quick for one, and is the reason the planet is named after the quick…

A: Step 1:  Einstein’s theory of General Relativity:  According to Einstein, time and space are one…

Q: Your astronaut twin brother is exploring a planet of a star far out in space. Ignoring the time…

A: Brother's age 2 years for 1 year of my age⇒ t∘=t   ,     t'=2t

Q: The most significant validation of Einstein’s Theory of General Relativity required the observation…

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Q: treatment

A: In the Newtonian mechanics any physical quantity was described as a three dimensional and lies in…

Q: Suppose you collected a data set in which you measured fall-times for different fall-heights. You…

A: The relation between the fit parameter A from the given mathematical model to and the parameter g…

Q: Why are light-years used to measure distances in space? O The speed of light is slower in space. O…

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Q: As measured on Earth the star Fomalhaut is 25.1 light years away. As measured by the crew of a…

A: The difference in time measured by two clocks due to their relative motion or position is called…

Q: A star is 80 light years from Earth. How fast does a spacecraft have to be for the journey to last…

A: The objective of the question is to find out the speed of a spacecraft that would allow an astronaut…

Q: Martians ships will take 400 years to each earth, but they sent a scout that is to fly by our moon…

A: It is known that if a body is moving in a constant velocity 'V' for a certain time 't' , then the…

Q: Millennium Falcon is approximately

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Q: the following question is confusing me: An ax is swung against a tree with a blow of 4000N. The…

A: Newton’s third law states that for every action, there is an equal and opposite reaction.The…

Q: Why do you believe Newtonian mechanics took so long to evolve compared to more sophisticated…

A: Newtonian mechanics: When the speed of a body is substantially slower than the speed of light,…

Q: What do you understand by time dilation? What is proper time and establish a relation for proper…

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Q: what are the conversions in order to convert lightyears into meters? What are the conversions needed…

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

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Q: Speed of light is just a theoretical concept: it cannot actually be measured in practice because…

A: Light is electromagnetic radiation comprises of small bundles of energy.  Range of visible light…

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.