Answer:
a) α=7.9x10^-4 rad
b) θ=1.12x10^-4 rad
c) The Earth and the Moon cannot be seen without a telescope.
Explanation:
In this exercise we will use the concepts of angular resolution, which depends on both the wavelength of the rays and the diameter of the eye or lens on the meter. Its unit of measure is the radian. The attached image shows the solution step by step.
Answer:
The inter-molecular forces holding non-polar compounds together is low compare to that of polar compounds. Therefore, it will take less energy to break the bond for non-polar compounds and vice versa. That is why polar compounds have higher melting points than non-polar compounds.
Explanation:
The force is greatest when the wire is perpendicular to the magnetic field.
In fact, the expression for the magnetic force is
where I is the current, L the length of the wire, B the magnetic field intensity and
is the angle between the directions of I and B.
We can see that F is maximum when
, so when
, so when the wire and the magnetic field are perpendicular to each other.
Answer:
0.00001581 light years
Explanation:
distance divided by speed of light= 150,000,000/300,000= 500 seconds 8.3333
8.3 minutes
now divide this by 60 x 24 x 365.25. so you will get answer=
.000015823 light years.
