The age of the oldest stars
,
Patterns of background radiation
,
How fast distant galaxies are moving away from us.
Coquina rock is deposited on the water bodies of the Earth's surface and oceans.
<u>Explanation:</u>
Coquina is nothing but a type of sedimentary rock generally limestone that is formed by the chunks of shells, trilobites, brachiopods, or other invertebrates.
Coquina is deposited on the oceans and water bodies of the Earth's surface. Coquina looks like a soft white rock; therefore it can be used in construction of buildings.
Answer:
1. drink lots of water
2. eat healthy breakfast
3. plan your meals
4. set a deadline
5. exercise at least 30 minutes a day even 10 minutes 3 times a day is good
6. eat fruits and vegetables
7. eat whole grains instead of white
8. get a good night's sleep
9. stay motivated
10. take time for mental health
Answer:
Total heat transfer is positive
Total work transfer is positive
Explanation:
The first law of thermodynamics states that when a system interacts with its surrounding, the amount of energy gained by the system must be equal to the amount of energy lost by the surrounding. In a closed system, exchange of energy with the surrounding can be done through heat and work transfer.
Heat transfer to a system is positive and that transferred from the system is negative.
Also, work done by a system is positive while the work done on the system is negative.
Therefore, from the question, since the heat engine inputs 10kJ of heat, then heat is being transferred to the system. Hence, the sign of the total heat transfer is positive (+ve)
Also, since the heat engine outputs 5kJ of work, it implies that work is being done by the system. Hence the sign of the total work transfer is also positive (+ve).
Answer:
O a force that opposes motion
