![Physics](/tpl/images/cats/fizika.png)
In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some people have suggested traveling at close to the speed of light. Suppose you wish to visit the red giant star Betelgeuse, which is 430 ly away, and that you want your 20,000 kg rocket to move so fast that you age only 38 years during the round trip.
a)How fast must the rocket travel relative to earth?
B)How much energy is needed to accelerate the rocket to this speed?
c)The total energy used in the United States in the year 2005 was roughly 1.0 *10^20 J. Compare the rocket's energy to this value by computing the ratio Energy of the rocket/ Energy used by the US.
![answer](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 16:30, yousifgorgees101
Which of the following would not be taken into consideration when describing the quality of a sound
Answers: 2
![image](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 16:30, rheamskeorsey33
A12-kg bag of groceries is tossed onto a table at 4.0 m/s and slides to a stop in 2.2 s . modify the equation fδt=δ (mv) to find the force of friction.
Answers: 2
![image](/tpl/images/cats/fizika.png)
Do you know the correct answer?
In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some pe...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 02.09.2019 12:10
![Konu](/tpl/images/cats/biologiya.png)
Biology, 02.09.2019 12:10
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 02.09.2019 12:10
![Konu](/tpl/images/cats/mat.png)
Mathematics, 02.09.2019 12:10
![Konu](/tpl/images/cats/istoriya.png)
History, 02.09.2019 12:10
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 02.09.2019 12:10
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 02.09.2019 12:10