D. None of the above if you use 9.81 m/s2 as earth's gravitational constant. C if you use 10 m/s2 anf B if you dont count the earth spinning and moving. B and C for g= 10 m/s2 and D for g= 9.81 m/s2 (Using this is way better)
Answer:
Explanation:
A bullet being shot out of a gun tends to leave tiny amounts of the bullet behind due to friction between the bullet and the gun barrel.
A roller skater pushing requires the conversion of food chemical energy to muscle contraction energy. This conversion increases the body temperature and sweat is excreted to counteract the heat increase. The evaporation of the sweat causes a slight decrease in body mass.
A jet plane taking off consumes some of the fuel carried onboard to provide thrust. The products of combustion become part of the exhaust stream leaving the airplane rearward providing forward thrust.
23. Baking soda solution will be of most help.
24. Milk should be given.
25. Distilled water is the choice.
<h3><u>Explanation:</u></h3>
23. When someone is having acidity, it means the amount of hydrochloric acid in stomach has increased and this can lead to several problems and discomfort like heart burn and even esophageal reflux. This should be treated with basic solutions which will neutralize the acid. So baking soda is the most appropriate choice which will neutralize the hydrochloric acid forming carbon dioxide, sodium chloride and water.
24. As the child swallows acid, the problems he could face is burning of mucous membrane, severe pain and even stomach can be pierced by burning. These effects need separate treatment, but as a first aid, the child should be given milk as a choice as the acid should be diluted and the contact of acid with mucous membrane should be reduced.
25. Distilled water do have a pH nearest to 7 Because in the rain water, there's often mixture of different acids like sulphuric acid and nitric acid which comes from atmosphere and makes rain water acidic. Carbonated water is acidic due to carbonic acid. Well water and lake water are often basic due to aluminum and magnesium salts. But distilled water doesn't have any impurities.
Answer:
It is True
Explanation:.
A commander assigns a zone reconnaissance mission when he seeks additional information on a zone before committing other forces in the zone. It is appropriate when the enemy situation is vague, existing knowledge of the terrain is limited, or combat operations have altered the terrain. A zone reconnaissance could include several route or area reconnaissance missions assigned to subordinate units.
Answer:
Minerals must be solid, have an orderly atomic structure, have a recognized chemical composition, be naturally occurring and <u>inorganic in origin</u>.
Explanation: