They might feel weightless and that it depends on which planet they are, they might seem lighter in other planets and heavier on other planets.
<span>Lab Safety Rules:
Report all accidents, injuries, and breakage of glass or equipment to instructor immediately. Keep
pathways clear by placing extra items (books, bags, etc.) on the
shelves or under the work tables. If under the tables, make sure that
these items can not be stepped on. Long hair (chin-length or longer) must be tied back to avoid catching fire. Wear sensible clothing including footwear. Loose clothing should be secured so they do not get caught in a flame or chemicals.<span>Work quietly — know what you are doing by reading the assigned experiment before you start to work. Pay close attention to any cautions described in the laboratory exercises</span> Do not taste or smell chemicals.<span> Wear safety goggles to protect your eyes when heating substances, dissecting, etc.</span> Do not attempt to change the position of glass tubing in a stopper.<span> Never point a test tube being heated at another student or yourself. Never look into a test tube while you are heating it.</span><span>Unauthorized experiments or procedures must not be attempted.</span>Keep solids out of the sink. Leave your work station clean and in good order before leaving the laboratory. Do not lean, hang over or sit on the laboratory tables. Do not leave your assigned laboratory station without permission of the teacher. Learn the location of the fire extinguisher, eye wash station, first aid kit and safety shower. Fooling
around or "horse play" in the laboratory is absolutely forbidden.
Students found in violation of this safety rule will be barred from participating in future labs and could result in suspension. Anyone wearing acrylic nails will not be allowed to work with matches, lighted splints, Bunsen burners, etc. Do not lift any solutions, glassware or other types of apparatus above eye level. Follow all instructions given by your teacher.Learn how to transport all materials and equipment safely. No eating or drinking in the lab at any time! </span>
The answer is E. Short and thick while cold.
Answer:
Explanation:
We know that for circular motion the centripetal acceleration 
is:
where v is the speed and r is the radius.
The centripetal acceleration for the astronaut must be the gravitational acceleration due to the gravity, as there are no other force. So
.
The radius of the orbit must be the radius of the Moon, plus the 270 km above the surface
We can obtain the speed as:
And this is the orbital speed.
