3 years ago

How to test the pH level of a soap?

Physics

2 answers:

olchik [2.2K]3 years ago

8 0

Just test the soap book

elixir [45]3 years ago

8 0

Answer:

One of the most common is to use pH strips.

Explanation:

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A 90.0-kg man runs at a constant speed of 11.5 m/s. what is his kinetic energy?

harina [27]

The kinetic energy possessed by the man is 517.5 Joules.

Given the following data:

Mass = 90.0 kg

Velocity = 11.5 m/s.

To find the kinetic energy of the man:

Kinetic energy is an energy that is possessed by a physical object or body due to its motion.

Mathematically, kinetic energy is calculated by using the formula;

$K.E = \frac{1}{2} MV^2$

Where:

K.E is the kinetic energy.

M is the mass of an object.

V is the velocity of an object.

Substituting the given values, we have;

$K.E = \frac{1}{2}$ × $90$ × $11.5$

$K.E = 45$ × $11.5$

Kinetic energy = 517.5 Joules.

Therefore, the kinetic energy possessed by the man is 517.5 Joules.

8 0

3 years ago

What is Snell law of refraction????

Morgarella [4.7K]

$\huge\mathbb\colorbox{black}{\color{white}{⏫FORMULA⏫}}$

$\huge\red {\underline { \overline{ \bf \mid\: \: \: ↓ANSWER↓ \: \: \mid}}}$

Explanation:

Snell's law (also known as Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.