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3 years ago

Water and gravity work together to erode soil, sediment, and rock. Give two examples...

2 answers:

5 0

Mass wasting events, such as rockfalls, landslides, slumps, creep, etc., are all gravity-powered modes of sediment transport

stepan [7]3 years ago

4 0

Gravity can cause water to move down and carry sediment and rocks along the bottom. if the water slows down, it drops the rocks and if it floods a field then the grass will also filter smaller particles out leaving fine sediment behind. In addition to it the fast flow of water can cause erosion, over time it can cause valleys as well.

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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

Lily needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 3

Oxana [17]

Answer
x = 59.5
Explanation
Based on the given conditions, formulate:
Rearrange unknown terms to the left side of the equation:
Calculate the sum or difference:
Divide both sides of the equation by the coefficient of variable:
Calculate the product or quotient x = :59.5
Answer x = 59.5

3 0

2 years ago

Two movies or books in which the number pi plays an important part in the story.

Dafna11 [192]

Two movies or books in which the number pi plays an important part in the story is American Pie and Hidden figures.

<h3>Who is Pi in the story?</h3>

The term Pi connote Piscine Molitor Patel (Pi). The Piscine is known to be the narrator for almost all part of the story or novel.

Conclusively, The account given by it is one that is composed of the majority or the the bulk of the story.

Learn more about story from

brainly.com/question/24292088

6 0

3 years ago

Can someone pls help

melamori03 [73]

Answer: The independent variable is the cause. so choose the cause

Explanation:

The independent variable is the cause.

4 0

3 years ago

A 400-kg box is lifted vertically upward with constant velocity by means of two cables pulling at 40. 0° on either side of the v

amm1812

Answer:

2558 N.

Explanation:Each rope takes half, so the vertical component of the force on each rope is half of this, or 1960 N.. But they are pulling at a 40 degree angle, so if t is the tension then t*cos(40) = 1960. This gives t = 2558 N.

7 0

3 years ago