Answer: When you touch wet canvas, surface tension will draw water to your finger. However, the drop left behind where you touched, like any irregular point on an overhead surface, will draw condensation from inside the tent if it is humid.
At the present time, the only way we know of that light can get shifted
toward the blue end of the spectrum is the Doppler effect ... wavelengths
appear shorter than they should be when the source is moving toward us.
IF that's true in the case of the Andromeda galaxy, it means the galaxy is
moving toward us.
We use the same reasoning to conclude that all the galaxies whose light is red-shifted are moving away from us. That includes the vast majority of all galaxies that we can see, and it strongly supports the theory of the big bang
and the expanding universe.
If somebody ever comes along and discovers a DIFFERENT way that light
can get shifted to new, longer or shorter wavelengths, then pretty much all
of modern Cosmology will be out the window. There's a lot riding on the
Doppler effect !
Answer: a) V = 9.81 m/a
b) S = 3.905m
c) V2 = 8.29m/s
d) Yes. The speed reduces.
Explanation:
Please find the attached files for the solution
Answer:
Thus, the change in the weight of the person is 1.6N , option c is correct.
Explanation:
Answer:
80.12J
Explanation:
Given parameters:
Mass of the bowling ball = 7.3kg
Height of the storage rack = 1.12m
Unknown:
Energy the ball would have exerted = ?
Solution:
To solve this problem, the potential energy is the best parameter to use.
Potential energy is the energy due to the position of a body. It is expressed as:
Potential energy = mass x gravity x height
So;
Potential energy = 7.3 x 9.8 x 1.12 = 80.12J
