Answer:
Explanation:
1. Arteries are the tubes responsible for the movement of blood from the heart to other parts of the body.
2. Power
(a) Work performed
w = mgh = 12 kg × 9.807 m·s⁻² × 15 m = 1800 J
(b) Power level
P = w/t = 1800 J/3 s = 600 W
3. Machine load
The formula for mechanical advantage (MA) is
where
Fₒ = the force of the object
Fₑ = the force exerted to overcome that of the object
The correct is answer is A, because fertilizer provides nitrogen to plants
Answer: A Ruler
Explanation:A Ruler is a common instrument used for measuring the length of small objects. It usually has four units of measurement to choose from: millimeter, centimeter, inch, and foot.
<h3><u>Answer</u>;</h3>
No, a precipitate does not form
<h3><u>Explanation</u>;</h3>
- Precipitation involves mixing or combining solutions that contain soluble ionic compounds to form an insoluble ionic compound by a reaction.
- Sodium acetate and ammonium sulfate are both soluble ionic compounds, which implies that they exist as ions in aqueous solution.
- <em><u>When they combine they form NH4CH3COOH and sodium sulfate, Na2SO4, which are both soluble salts, as all salts of ammonium and sodium are soluble.</u></em>
- <em><u>Both ammonium acetate and sodium sulfate are soluble because there are no anions that can form an insoluble solid with NH4+ and Na+ cations. </u></em>
