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3 years ago

Select the correct answer.

SAT

2 answers:

denis23 [38]3 years ago

8 0

B. Octopus’s ability to squirt ink

LUCKY_DIMON [66]3 years ago

6 0

B. Octopus’s ability to squirt ink

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How does "A Black Man Talks of Reaping" represent the way the times in which the author Arna Bontemps lived?

HACTEHA [7]

The speaker describes frustration with racial inequality

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3 years ago

the density of the American white oak tree is 752 kilograms per cubic meter if the volume of a American oak is 12.89 cubed. What

Arlecino [84]

Answer:

a,sv sakv

Explanation:

kjsvhISUHfn

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3 years ago

the price of gas has increased and people are moving away from their old gas guzzlers to more fuel-efficient cars. this is an ex

azamat

The switching from old gas guzzlers to more fuel-efficient cars is an example of substitution effect.

Substitution effect is the switching of customer from a more expensive product to a cheaper product. This is usually because of an increase in price or a decrease in the customers income.

Substitution effect can be positive for consumers if they can continue to by the products they like. Also, this effect can be negative for consumers if it results in fewer choices of that product or products of lower quality.

Find out more at: brainly.com/question/22079450

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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

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2 years ago

which explanation best explains the importance of using encryption? it is important to learn a new language. it is fun and inter

Vladimir [108]

Encryption protects sensitive information is explanation best explains the importance of using encryption. Personal information and important information are protected, and communication between client apps and servers is made more secure.

<h3>What is Encryption?</h3>

Encryption is a way of securing digital data that employs one or more mathematical procedures, as well as a password or "key" to decrypt the information.

Data is encrypted using an algorithm that makes the original data unreadable. The name of two different data comes from the fact that encryption and decryption are done with the same key.

Thus option C is correct.

For more details about Encryption, click here

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1 year ago