Answer:
Hydrogen peroxides are known to be an active ingredient in hair dyes. Hydrogen peroxide is a damaging chemical although it has been added in diluted amounts in hair dyes. Some hair dye companies have already started looking for alternatives for hydrogen peroxide to use in their products, concerning the damaging effects of the chemical.
Hydrogen peroxide can cause hair loss, dermatitis and scalp burns.
Concerning the harmful chemicals in dyes, many people consider it is best to use henna if you really want a colour change for your hair.
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Answer:
You are doing this wrong. Make sure that if you have 2 rows and on the top it has pounds then on the second bottom row you also have pounds so that they cancel each other out.
Explanation:
<u>Answer:</u>
a) 480 000 J
b) 43 m/s
<u>Explanation:</u>
a)
To calculate the work done by the engine, we can use the following formula:
.
⇒
⇒
b)
We know that the work done by the propeller was converted into motion of the sled, which means the propeller provided the sled with kinetic energy.
∴ work done by propeller = kinetic energy gained by sled
⇒
⇒
⇒
⇒
⇒
This means that its velocity after 40 m was 43 m/s.
Answer:
The value is
Explanation:
From the question we are told that
The length is
The number of cycle is
The time taken is
The period is mathematically represented as
Also the period is mathematically represented as
So
=>
=>