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marshall27 [118]
3 years ago
12

It was found that ice cream sales decrease significantly as the temperature outside decreases; a very strong relationship was fo

und. What is the most likely correlation coefficient from this hypothetical study
Physics
1 answer:
zlopas [31]3 years ago
3 0

Answer:

Value closest to 1

Explanation:

It is described from the scenario above that ice cream sales decreases as the outside temperature increases, hence showing a strong relationship between both variables (icream sales and temperature). The correlation Coefficient is a metric used in regression modeling to depict the strength of relationship between two variables, (The dependent and independent variables). Correlation Coefficient ranges from (-1 to +1). With values close to 1 or - 1. Also the positive and negative signs are used to show the type of relationship between the variables. If an increase in variable A leads to a decrease in variable B, then we have negative correlation (-) ; while an increase or decrease in both variables depicts a positive correlation. The most likely correlation Coefficient for the study above will be a positive value which is close to 1 since the relationship is described as strong.

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boyakko [2]

Answer:

r =  255.68 m

Explanation:

When a body moves in a circular path, an acceleration, due to constant change in its direction, is developed, known as centripetal acceleration. The centripetal acceleration acts towards the center of the circular path. The formula to calculate the centripetal acceleration is given as follows:

ac = v²/r

where,

ac = centripetal acceleration = 22 m/s²

v = tangential speed = 75 m/s

r = radius of curve = ?

Therefore,

22 m/s² = (75 m/s)²/r

r = (75 m/s)²/(22 m/s²)

<u>r =  255.68 m</u>

4 0
3 years ago
Physics question, please help me?
Damm [24]

As we know that block of steel is continue to be in moving state

so here the friction must be kinetic friction between two surface

so we know that formula of kinetic friction must be

F_k = \mu_k mg

now we have

\mu_k = 0.57

mg = 25 N

now from the above equation we have

F_k = 0.57\times 25

F_k = 14.25 N

So here we need atleast 14.25 N force to continue sliding the box now as per given options all forces which are less than 14.25 N is not correct

Hence correct answer must be 18.0 N

<u>D) 18.0 N</u>

7 0
4 years ago
Please help <br> Physics is so confusing
crimeas [40]

Answer:

below

Explanation:

sin a = 4/5

a = 53.1

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theta = 36.89

4 0
3 years ago
According to Boyle’s Law, increasing the pressure of a gas will have which effect on its volume? increase decrease random effect
umka21 [38]
Volume will decrease if the heat remains constant
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4 years ago
Need help asap
Vanyuwa [196]
I’ve done this before the answer is B
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2 years ago
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