Children of Acklins spend a lot of time playing in the very calm and shallow water....

Children of Acklins spend a lot of time playing in the very calm and shallow water. Another of their favorite pastimes is collecting Styrofoam blocks that wash up on their normally prestine beaches. The children have styrofoam blocks that are 0.75m, 0.50m wide and 0.25m high. Little Johnny has started piling dry sand into blocks that he is pretending is a boat. Determine the

(i) depth to which the stryofoam block sinks without any sand (the depth of immersed styrofoam)

(ii) volume of sand thst little johnny can pile onto block, before water starts washing away the sand.

(Density: Styrofoam 0.1g/cm^3, sand 1.60g/cm^3, sea water 1.02g/cm^3)

Solutions

Expert Solution

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

Do our children spend enough time enjoying the outdoors and playing with friends, or are they...

Do our children spend enough time enjoying the outdoors and playing with friends, or are they spending more time glued to the television, computer, and their cell phones? A random sample of 250 youth between the ages of 8 and 18 showed that 160 of them had a TV in their bedroom and that 130 had a video game console in their bedroom. (a) Estimate the proportion of all 8- to 18-year-olds who have a TV in their bedroom. Calculate...

1. Among children who spend much time playing alone, what factors distinguish those who are likely...

1. Among children who spend much time playing alone, what factors distinguish those who are likely to have adjustment difficulties from those who are well-adjusted and socially skilled? 2. Which types punishment for misbehaving preschooler do you endorse, and which types do you reject?

Two children, Ferdinand and Isabella, are playing with a water hose on a sunny summer day.

Two children, Ferdinand and Isabella, are playing with a water hose on a sunny summer day. Isabella is holding the hose in her hand 1.0 meters above the ground and is trying to sprayFerdinand, who is standing 10.0 meters away. Part A Will Isabella be able to spray Ferdinand if the water is flowing out of the hose at a constant speed v0 of 3.5 meters per second? Assume that the hose is pointed parallel to the ground and take...

Many people find that they spend a lot of time on their smartphones each day without...

Many people find that they spend a lot of time on their smartphones each day without realizing how long they are scrolling through apps or playing games. A researcher wanted to test whether a mindfulness intervention would help people be more aware of how much time they spend on their phones, and if this might lead to decreased time spent on their phones each day. To perform this study, participants used an app that tracks phone usage in minutes the...

a) A researcher wants to test if boys spend more time playing sports on average than...

a) A researcher wants to test if boys spend more time playing sports on average than girls. Data is collected, resulting in the table below. It is known that the times for sports have a normal distribution in general. Group n Average number of hours SD Boy 35 5.2 3.3 Girl 25 3.5 5 Compute the test statistic that is corresponding to the test in the question 9. Round your answer to two decimal digits. b) Let the significance level...

An online gaming company collects data on the amount of time 250 users spend playing a...

An online gaming company collects data on the amount of time 250 users spend playing a game and the amount they spend in dollars on in-game purchases. A statistician working for the company runs a regression analysis relating the total purchase amount to the minutes spent playing (Play). The output of this analysis is shown below: Predictor Coeff SE-coeff T P Constant .8911 .26411 3.3740 0.001 Excercise .1720 .07861 2.1880 .030 S= 0.461 R-Sq=...

The average amount of time boys and girls aged 7 to 11 spend playing sports each...

The average amount of time boys and girls aged 7 to 11 spend playing sports each day is believed to be the same. A study is done and data are collected, resulting in the data in the following table. Sample Size Average Number of Hours Playing Sports per day Sample Standard Deviation Girls 9 2 0.866 Boys 16 3.2 1.00 a. Define the appropriate parameter(s) and state the hypotheses for testing if this study provides evidence that the mean amount...

The time married men with children spend on child care averages 6.0 hours per week (Time,...

The time married men with children spend on child care averages 6.0 hours per week (Time, March 12, 2012). You belong to a professional group on family practices that would like to do its own study to determine if the time married men in your area spend on child care per week differs from the reported mean of 6.0 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week...

The time married men with children spend on child care averages 6.4 hours per week {Time,...

The time married men with children spend on child care averages 6.4 hours per week {Time, March 12, 2012). You belong lo a professional group on family practices that would like to do its own study to determine if the time married men in your area spend on child care per week differs from the reported mean of 6.4 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week...

Playing with a water hose

Two children, Ferdinand and Isabella, are playing with a water hose on a sunny summer day. Isabella is holding the hose in her hand 1.0 meters above the ground and is trying to spray Ferdinand, who is standing 10.0 meters away.To increase the range of the water, Isabella places her thumb on the hose hole and partially covers it. Assuming that the flow remains steady, what fraction f of the cross-sectional area of the hose hole does she have to...

Subjects