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iogann1982 [59]
3 years ago
11

Answer the following questions, using the simulation: a. Determine the spring constant, k, of Spring 1, by using Hooke’s Law. Ta

ke three different measurements (since there are 3 masses), complete three calculations, and then average your k’s to get a more accurate answer. By applying lots of friction, you will be able to get your mass to hang still. Show a table of your data and your calculations of k. b. Determine the three unknown masses: Red, Green, and Gold. Use Hooke’s Law to determine the masses. Show all data and calculations. c. Explain the effect of mass on Hooke’s Law. d. Explain the effect of gravity on Hooke’s Law by checking out what happens in the four different locations, as well as when there is no gravity. e. Explain the effect of the spring constant, k, (stiffness of spring) on Hooke’s Law. f. Explain the effect of friction on Hooke’s Law.
Mathematics
1 answer:
Akimi4 [234]3 years ago
4 0

At high noon, you can feel warm air coming from inland. During noon, especially in spring and summer, the radiation caused by the Sun warms the land surface more compared to the sea surface. This is because heat is directly applied on the land surface compared to the ocean.

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What will happen to the slope of line P if the line is shifted so that the y-intercept increases and the x-intercept remains the
juin [17]

Answer:

Step-by-step explanation:

⊕ The slope will increase

4 0
3 years ago
the pie chart shows the information about the favourite ice cream flavour of each student in a school there are 720 students in
kirill115 [55]

Answer:

chocolate= 180 students

vanilla= 120

strawberry= 210

mango= 210

Step-by-step explanation:

The chocolate section of the pie chart is at a right angle (90 degrees), which means a quarter of the students prefer chocolate

720/4= 180

The vanilla section is 60 degrees which is 2/3 of 90

180/3=60

60x2=120

the mango and strawberry sections represent whats left which is 420 students. The sections are equal to each other so they're each 210 students

7 0
3 years ago
a sample of 546 boys aged 6–11 was weighed, and it was determined that 89 of them were overweight. A sample of 508 girls aged 6–
AleksAgata [21]

Answer:

p-value:  0.6527

Step-by-step explanation:

Hello!

You have two samples to study, from each sample the weight of each child was measured and counted the total of overweight kids (x: "success") in each group:

Sample 1 (Boys aged 6-11)

n₁= 546

x₁= 89

^p₁= x₁/n₁ = 89/546 ≅0.16

Sample 2 (girls aged 6-11)

n=508

x= 74

^p= x/n = 74/508 ≅ 0.15

If the hypothesis statement is "The proportion of boys that are overweight differs from the proportion of girls that are overweight", the test hypothesis is:

H₀: ρ₁ = ρ₂

H₁: ρ₁ ≠ ρ₂

This type of hypothesis leads to a two-tailed rejection region, then the p-value will also be two-tailed. To calculate the p-value you have to first calculate the value of the statistic under the null hypothesis, in this case, is a test for the difference between two proportions:

Z=<u>      (^ρ₁ - ^ρ₂) - (ρ₁ - ρ₂)        </u> ≈ N(0;1)

    √(ρ` * (1 - ρ`) * (1/n₁ + 1/n₂))

ρ`=<u> x₁ + x₂  </u> = <u>  89+74     </u> = 0.154 ≅ 0.15

     n₁ + n₂     546 + 508

Z⁰ᵇ =<u>          (0.16-0.15) - (0)                    </u>

       √(0.15 * (1 - 0.15) * (1/546 + 1/508))

Z⁰ᵇ = 0.45

I've mentioned before that in this test you have a two-tailed p-value. The value calculated (0.45) corresponds to the right or positive tail and the left tail is symmetrical to it concerning the distribution mean, in this case, is 0, so it is -0.45. To obtain the p-value you need to calculate the probability of both values and add them:

P(Z>0.45) + P(Z<-0.45) = (1- P(Z<0.45)) + P(Z<-0.45) = (1-0.67364) + 0.32636 = 0.65272 ≅ 0.6527

p-value:  0.6527

Since there is no signification level in the problem, I'll use the most common to reach a decision. α: 0.05

Since the p-value is greater than α, you do not reject the null Hypothesis, in other words, there is no significative difference between the proportion of overweight boys and the proportion of overweight girls.

I hope it helps!

3 0
3 years ago
Enter the number that belongs in the green box.
ale4655 [162]

Answer:

the green box is 0

Step-by-step explanation:

we are asked to find the <u>x-intercept</u>, which means y = 0

(x, y)

Another way to test this is plug it in 1 for x!  (1, y) where x = 1

y = \frac{2x^{2} -3x+1}{2x^{2} +8x+6} \\\\

y = \frac{2(1)^{2} -3(1)+1}{2(1)^{2} +8(1)+6}

y = \frac{2(1) -3(1)+1}{2(1) +8+6}

y = \frac{2 - 3 + 1}{2 + 8 + 6}

y = \frac{-1+1}{10 + 6}

y = \frac{0}{16}

y = 0

6 0
2 years ago
Smoking can cause fatal damage to multiple human body systems. how does smoking directly affect the cardiovascular system
-Dominant- [34]
Smoking directly affects the cardiovascular system by r<span>educing the amount of oxygen that reaches the body's tissues which increase the risk of blood clots that damages blood vessels which doubles the risk of stroke (reduced blood flow to the brain).</span>
5 0
3 years ago
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