Answer:
0.22 N
Explanation:
The tension in the spring is expressed as
and making T the subject then
where T is the tension in the string, m is the mass of the bead, g is acceleration due to gravity and 
is the angle which here is given as 25 degrees. Taking the value of g as 9.81 then
It is a matter of how your eyes percive light and how some wet objects refract light differently then their dry counter parts In reality wet objects are not really darker then dry objects that just how the human eye sees it.
Answer:
A sample of 5.2 mg decays to .65 mg or to 1/8 of its original amount.
1/8 = 1/2 * 1/2 * 1/2 or 3 half-lives.
3 * 30.07 = 90 yrs for 5.2 mg to decay to .65 mg
You can get these other numbers similarly:
5.2 / .0102 = 510 requires about 9 half-lives which is 30 * 9 = 270 yrs
Answer:
the work done by him is 2,340 joules
Explanation:
The computation of the work done by him is shown below:
= Weight of man × height
= 450 N × 5.2 meters
= 2,340 joules
Hence, the work done by him is 2,340 joules
We simply multiply the man weight with the height
Answer:
Found this off of google, "When you inflate the balloon, the dots slowly move away from each other because the rubber stretches in the space between them. ... This stretching of space, which causes the distance between galaxies to increase, is what astronomers mean by the expansion of the Universe."
