160w/4 = 40w
1000J/ 4= 250J
a 40w light bulb will consume 250J
<span>sound waves are a type of wave sometimes called compression waves, vibrations with enough of an amplitude can compress and decompress the air adjacent to the object causing the waves to form.</span>
Answer:
40 N
Explanation:
We first need to calculate the acceleration of the tron ball.
Since acceleration, a = (v - u)/t where u = initial velocity of iron ball = 17m/s, v = final velocity of iron ball = 27m/s and t = time taken for the change in velocity = 5 s.
So, a = (v - u)/t
= (27 m/s - 17 m/s)/5 s
= 10 m/s ÷ 5 s
= 2 m/s²
We know force on iron ball, F = ma where m = mass of iron ball = 20 kg and a = acceleration = 2 m/s²
So, F = ma
= 20 kg × 2 m/s²
= 40 kgm/s²
= 40 N
So, the magnitude of the force on the iron ball is 40 N.
The types of chemical reactions are as follows:
- Combination reactions
- Decomposition reactions
- Double decomposition
- Thermal dissociation
- Redox reactions
<h3>What the are the types of reactions?</h3>
Chemical reactions are changes in which new substances are formed.
The types of chemical reactions are as follows:
- Combination reactions - these are reactions in which two or more substances combine to form a single compound
- Decomposition reactions - these are reactions in which a larger compound splits into smaller substances
- Displacement reactions - these are reactions in which one element or radical replaces another in a compound
- Double decomposition - these are reactions in which two substances exchange their radicals to form new compounds.
- Thermal dissociation - these reactions involves heating compounds to split them into smaller substances.
- Redox reactions - these are reactions in which oxidation and reduction reactions occur simultaneously.
In conclusion, chemical reactions produce new substances.
Learn more about chemical reactions at: brainly.com/question/11231920
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