How many logs should be there in the raft

Assignment Help Physics

Reference no: EM13691524

Here is the problem which I am struggling on, please help me!

Problem: A log-raft was made by lashing some logs together, where each log has a diameter 0.45 m and length 3.80 m. How many logs should be there in the raft to have 10 men safely afloat on the raft in sea water (the average mass of a man is 48 kg). Density of the logs is 800 kg/m³ and that of sea water is 1024 kg/m³.

Please show the work for the calculation so I can understand what I'm doing. Thanks!

Reference no: EM13691524

Questions Cloud

What is the electric field at a given distance : A spherical, non-conducting shell of inner radius r1= 20 cm and outer radius r2= 25 cm carries a total charge Q = 25 µC distributed uniformly throughout its volume. What is the electric field at a distance r= 22 cm from the center of the shell.

How much of each solution should be mixed to prepare : Problem- you need to prepare 100 mL of a pH=4.00 buffer solution using .100 M benzoic acid (pKa = 4.20) and .160 M sodium benzoate. How Much of each solution should be mixed to prepare this buffer

What is the mass of the sphere : A hollow sphere if inner radius 8.0 cm and outer radius 9.0 cm floats half submerged in a liquid of density 800 kg/m3. What is the mass of the sphere

The series exhibits structures not predicted : Problem- For the series of alkali halides, calculate radius ratio for each. Which in the series exhibits structures not predicted by the radius ratio rules?

How many logs should be there in the raft : A log-raft was made by lashing some logs together, where each log has a diameter 0.45 m and length 3.80 m. How many logs should be there in the raft to have 10 men safely afloat on the raft in sea water

Estimate the time needed to decompose 1 mole of the compound : Problem- in the photochemical decomposition of a certain cmpd, light intensity of 5.4 x 10^-6 einsteins s^-1 was employed. Assuming the most favorable conditions, estimate the time needed to decompose 1 mole of the compound.

Calculate the speed of the spinning foxtail : A child swings a foxtail (a spinning toy) of mass 164 g, with a force of 6 N and a radius of 1.8 m. Calculate the speed of the spinning foxtail

A solution consisting of hoac is mixed with 40ml of water : Problem- 10ml of a solution consisting of 24.0ml 1.0M NaOAc + 10ml 1.0M HOAc is mixed with 40ml of water. The PH is 5.08. Find [H+], [OAc-], [HOAc] and the Ka value.

What is the difference between the speeds : What is the difference between the speed of longitudinal waves in air at 25.0°C and their speed at -16.0°C

User Account

All Pages