Homework Answers
Since light year is the distance travelled by the light in one year and since the star is 8 light years away that means it would have taken light to reach the star 8 years. Which is exactly the time taken by the spaceship. Hence the spaceship moved with the speed of light. C.
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3. (Fully graded) A spaceship travels to a star 8 light-years away, in a time its...
Having trouble with this. Dont know where to start. A spaceship travels at 0.540 Co away...
Having trouble with this. Dont know where to start.
A spaceship travels at 0.540 Co away from Earth. When the ship is 2.57x1011 m away in the Earth reference frame, the ship clock is set to t = 0 and a message (light signal) is sent to its ground crew on Earth. When this message is received the ground crew immediately sends a reply (light signal) to the ship. The ground crew adjust their clocks to specify t = 0...
3. A starship moving at 0.85c travels from Earth to the Wolf-359 system, 7.9 light years...
3. A starship moving at 0.85c travels from
Earth to the Wolf-359 system, 7.9 light years away. How long will
the trip take according to a) Earth’s clocks? b) the starship’s
clocks? c) How far is it from Earth to the star according to the
starship’s crew? d) What do they compute their speed to be?
3. A starship moving at 0.85c travels from Earth to the Wolf-359 system, 7.9 light years away. How long will the trip take according...
A starship moving at 0.85c travels from Earth to the Wolf-359 system, 7.9 light years away....
A starship moving at 0.85c travels from Earth to the Wolf-359 system, 7.9 light years away. How long will the trip take according to a) Earth’s clocks? b) the starship’s clocks? c) How far is it from Earth to the star according to the starship’s crew? d) What do they compute their speed to be?
3. A starship moving at 0.85c travels from Earth to the Wolf-359 system, 7.9 light years...
3. A starship moving at 0.85c travels from Earth to the Wolf-359 system, 7.9 light years away. How long will the trip take according to a) Earth’s clocks? b) the starship’s clocks? c) How far is it from Earth to the star according to the starship’s crew? d) What do they compute their speed to be?
Astronaut Flo wishes to travel to a star 20 light years away
Astronaut Flo wishes to travel to a star 20 light years away and return. Her husband Malcolm, who was the same age as Flo when she departs, stays home (baking cookies). If Flo travels at a constand speed of 80% of the speed of light (except for a short time to turn around), how much younger than Malcolm will Flo be when she returns?Hint--How long does Malcolm sit around baking cookies? How far is the distance to Flo?
Light requires 4.5 years to travel from the nearest star to earth
Light requires 4.5 years to travel from the nearest star to earth. If we could travel there in a spaceship going 90% of the speed of light, the trip would require 5.0 years according to clocks on earth. How much time would pass for the passengers in the ship?
A certain spaceship has a speed of 13600 mi/hr. What is its speed in light-years/century? A...
A certain spaceship has a speed of 13600 mi/hr. What is its speed in light-years/century? A light-year is the distance that light travels in one year with a speed of 186,000 mi/s.
Suppose an astronaut travels to a star 10 lightyears away at a significant fraction of the...
Suppose an astronaut travels to a star 10 lightyears away at a significant fraction of the speed of light (for example, v=0) and returns. Assume the negligible amount of time is spent at the destination. Does this round-trip journey take less than, equal to, or more than 20 years as observed by an Earth-based observer? Does this round-trip journey take less than, equal to, or more than 20 years as observed by the astronaut? Describe the journey as the astronaut...
A very fast space-craft with a speed of 0.60c travels to the nearby star Alpha Ventura...
A very fast space-craft with a speed of 0.60c travels to the nearby star Alpha Ventura which is 7.5 light-years away from Earth. If the pilot turned 21 years old on the day that he left Earth, find the following: How much Earth time will have elapsed by the time that the craft arrives at Alpha Ventura? What is the biological age of the pilot when the craft arrives at Alpha Ventura?
3) A 40,00o kg spacecraft travels to a planet that is 1o light-years away. The one-way...
3) A 40,00o kg spacecraft travels to a planet that is 1o light-years away. The one-way trip takes 5 years in the reference system of the spacecraft. The spacecraft uses a radio transmitter with a wavelength of 8.o cm to communicate with earth. What are the wavelength, frequency, and energy of the radio photons as observed back on earth?
Having trouble with this. Dont know where to start.
A spaceship travels at 0.540 Co away from Earth. When the ship is 2.57x1011 m away in the Earth reference frame, the ship clock is set to t = 0 and a message (light signal) is sent to its ground crew on Earth. When this message is received the ground crew immediately sends a reply (light signal) to the ship. The ground crew adjust their clocks to specify t = 0...
3. A starship moving at 0.85c travels from
Earth to the Wolf-359 system, 7.9 light years away. How long will
the trip take according to a) Earth’s clocks? b) the starship’s
clocks? c) How far is it from Earth to the star according to the
starship’s crew? d) What do they compute their speed to be?
3. A starship moving at 0.85c travels from Earth to the Wolf-359 system, 7.9 light years away. How long will the trip take according...
A very fast space-craft with a speed of 0.60c travels to the nearby star Alpha Ventura which is 7.5 light-years away from Earth. If the pilot turned 21 years old on the day that he left Earth, find the following: How much Earth time will have elapsed by the time that the craft arrives at Alpha Ventura? What is the biological age of the pilot when the craft arrives at Alpha Ventura?
3) A 40,00o kg spacecraft travels to a planet that is 1o light-years away. The one-way trip takes 5 years in the reference system of the spacecraft. The spacecraft uses a radio transmitter with a wavelength of 8.o cm to communicate with earth. What are the wavelength, frequency, and energy of the radio photons as observed back on earth?
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