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Three contemporary events transforming south africa

aniked [119]

Answer:

Answer is stated below

Explanation:

1.The contemporary events that are showcasing the transforming South Africa are it's diversity communication and training in all the workplaces.

2.Accelerated corporate interest in this field is monitored by government of the country.

3.Previously the diversity work was frought with pitfalls but now it is not the situation.

Therefor, these events shaped Africa into the amazing continent it is today.

7 0

2 years ago

Newton’s law of cooling states that for a cooling substance with initial temperature t0, the temperature t(t) after t minutes ca

antoniya [11.8K]

The cooling rate of the substance is approximately 0.0732.

According to the statement, the Newton's law of cooling is defined by the following formula:

$T(t) = T_{s} + (T_{o}-T_{s})\cdot e^{-k\cdot t}$ (1)

Where:

$T_{s}$ - Final temperature, in degrees Celsius.
$T_{o}$ - Initial temperature, in degrees Celsius.
$t$ - Time, in minutes.
$k$ - Cooling rate, in $\frac{1}{min}$ .
$T(t)$ - Current temperature, in degrees Celsius.

Please notice that substance reaches thermal equilibrium when $T(t) = T_{s}$ , that is when temperature of the substance is equal to the temperature of surrounding air.

If we know that $T_{o} = 80\,^{\circ}C$ , $t = 15\,min$ , $T_{s} = 50\,^{\circ}C$ and $T(15) = 60\,^{\circ}C$ , then the cooling rate of the substance is:

$60 = 50 + (80 - 50)\cdot e^{-15\cdot k}$

$\frac{60-50}{80-50}= e^{-15\cdot k}$

$\frac{1}{3} = e^{-15\cdot k}$

$k = -\frac{1}{15}\cdot \ln \frac{1}{3}$

$k \approx 0.0732$

The cooling rate of the substance is approximately 0.0732.

To learn more on Newton's law of cooling, we kindly invite to check this verified question: brainly.com/question/13748261

7 0

2 years ago

PLEASE HELP

Nutka1998 [239]

Answer:

the answer to this is brief outrage

5 0

2 years ago

Which of the following is true about AP classes?

kozerog [31]

I'm pretty sure it's A

Explanation:

I did a few quick Google searches on ap classes because I myself do not take them a I read that most colleges do take ap classes as credit. it's no guaranteed however as it says many, not all. and for C I looked it up and I'm assuming they can be taken anywhere. take what I say with a grain of salt though because like I said I just googled it, hope it helps though.

6 0

3 years ago

T/F

azamat

The given statement "dual innervation is the term used to describe an organ that receives both sympathetic and parasympathetic motor impulses" is TRUE.

<h3>What is dual innervation?</h3>

Dual innervation refers to an organ's ability to receive both sympathetic and parasympathetic motor impulses. Sympathetic responses are extensive throughout the body, which is partially explained by the fact that a single sympathetic preganglionic fiber may synapse with 20 or more postganglionic fibers.

Examples of organs with dual innervation include the heart and the eye.

The parasympathetic system slows heart rate whereas the sympathetic system speeds it up.

While the parasympathetic system causes the pupil of the eye to constrict, the sympathetic system causes the pupil to enlarge.

The heart and lungs have separate innervations.

The vagus nerve's impact on the pacemaker cells of the heart has a tiny probability of affecting the rate and force of heart muscle contraction.

Therefore, the given statement "dual innervation is the term used to describe an organ that receives both sympathetic and parasympathetic motor impulses" is TRUE.

Know more about dual innervation here:

brainly.com/question/29665163

#SPJ4

6 0

11 months ago