Answer:
A gas giant is a huge planet made of gases primarily hydrogen and helium. These gas giant planets include Jupiter, Saturn, Uranus, and Neptune.
Answer:
Explanation:
As given, the student has three balloons and rubs two of them on a piece of wool. The rubbing of balloon on wool is the independent variable as it was done on two and not on the third as control.
Answer:
I dont think eating is meant for fun. It is meant for survival. There can be some people that see it as a competition but the main purpose of eating is to survive I guess. Im kinda competitive with eating so if I was facing sombody and had to chug a cup of his beverage to avoid taking the time to eat then maybe ya.
Explanation: Main purpose of eating tho is for survival because its a human need you need
Answer:
The steam engine of James watt is more efficient than Newcomen ans more suitable for the industrial revolution.
Explanation:
James Watt is more widely know for working steam engine because Watt has created better engine which is suitable for the industrial revolution. The steam engine of James watt is more efficient than Newcomen. Watt developed the condensing arrangement by using piston which lessen the initial pressure leading to effectively worked than Newcomen's
Answer:
The minimum angular spread of the laser beam is 3.32 ×
radians (or 3.32 μrad).
Explanation:
The minimum angular spread of a wave is the ratio of its narrowest diameter to its wavelength.
From Rayleigh's formula,
Angular spread = 1.22 (wavelength ÷ diameter)
= 1.22 (λ ÷ D)
Given that:
diameter, D = 0.18 m and wavelength, λ = 490 nm, then;
Angular spread of the laser beam = 1.22 (λ ÷ D)
= 1.22![(\frac{490*10^{-9} }{0.18})](https://tex.z-dn.net/?f=%28%5Cfrac%7B490%2A10%5E%7B-9%7D%20%7D%7B0.18%7D%29)
= 1.22× 2.7222 × ![10^{-6}](https://tex.z-dn.net/?f=10%5E%7B-6%7D)
= 3.3211 ×
rad
The minimum angular spread of the laser beam is 3.32 ×
radians.