Travel by bubble might seem more appropriate for witches in Oz, but two physicists suggest that a future spaceship could fold a space-time bubble around itself to travel faster than the speed of light.
We're talking about the very distant future, of course.
The idea involves manipulating dark energy — the mysterious force behind the universe's ongoing expansion — to propel a spaceship forward without breaking the laws of physics.er:
They face problems with their economic growth and jobs. They also have problems with mining, cost of living, delivery of services and also corruption.
Based on the knowledge about radioactive elements, the decay of radioactive elements such as uranium creates heat especially in Earth's crust, where these elements are abundant.
<h3>What are radioactive elements?</h3>
Radioactive elements are elements which undergo spontaneous decay of their nucleus and in the process produce elements with smaller atomic masses with the release of radiation and heat.
Examples of radioactive elements include uranium and radium.
Therefore, the decay of radioactive elements such as uranium creates heat especially in Earth's crust, where these elements are abundant.
Learn more about radioactive elements at: brainly.com/question/18640165
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Explanation: At latitude 0° (the Equator) day length will be approximately 12 hours. Areas on the Equator have a constant 12 hours of daylight all year round. As latitude increases to 80° (polar circles - north or south), day length can be seen to increase to 24 hours or decrease to zero (depending on the time of year).