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2 years ago

PLEASE HELP I don’t understand DONT USE ME FOR POINTS

Mathematics

1 answer:

katrin [286]2 years ago

7 0

Answer:

d = 364 feet

Step-by-step explanation:

Given that,

The pressure at depth d is given by :

$P=13+\dfrac{8}{13}d$

Pressure under water is found to be 237 pounds per square foot

Now, put P = 237 to find d. So,

$237=13+\dfrac{8}{13}d\\\\237-13=13+\dfrac{8}{13}d-13\\\\224=\dfrac{8}{13}d\\\\d=\dfrac{224\times 13}{8}\\\\d=364\ ft$

So, the depth is equal to 364 feet.

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5. PLEASE HELP

lana66690 [7]

Answer:

The potential energy of the ball having 2kg mass would be $392$ J

Step-by-step explanation:

I am assuming the ball has a mass of 2 kg, as you have not mentioned the mass of a ball.

Considering the formula for calculating the gravitational potential energy

$G.P.E\:=\:m.g.h$

$m = 2$ kg

Acceleration of gravity = g = 9.8 $ms^{-2}$

As the ball is on the height = h = 20 meters

So,

$G.P.E\:=\:(2)(9.8)(20)$

$G.P.E\:=392$ J

Therefore, the potential energy of the ball = $392$ J

Keywords: potential energy, Gravitation potential energy

Learn more potential energy from brainly.com/question/14022793

#learnwithBrainly

5 0

3 years ago

What is a "confound" in an experimental study? Group of answer choices

Ostrovityanka [42]

Answer:

The correct option is option a. an extra variable that could explain result differences between groups.

Step-by-step explanation:

Confusion variables, also called third variables, are variables that the investigator did not control or did not eliminate and that damage the internal validity of an experiment, that is, the degree to which the results are valid.

The dependent and independent variables are the two main variables of any experiment or investigation. The independent is one that changes or is controlled to study its effects on the dependent variable. The dependent is that variable that is investigated and measured.

Confusion variables may cause the investigator to analyze the results incorrectly. The results may show a false correlation between dependent and independent variables.

So the correct option is option a. an extra variable that could explain result differences between groups.

This is because this additional variable that was not controlled or taken into account during the experimental study modifies the result. And the other groups that conducted the experiment and took into account the variable will have different results because they take into account other independent variables.

3 0

3 years ago

HELP TIMED!! WILL GIVE BRAINLIEST

3241004551 [841]

It’s b my ninjas pog

5 0

3 years ago

WILL GIVE 100 POINTS TO WHO ANSWERS THESE!!! Questions in Pictures. Polynomials and Factoring

Alex17521 [72]

Assuming that you want the product of the two factors given in each problem:

⇒ we solve this problem by timing each unit of a factor to every unit

of the other factor