C.) the 2.1 eV photon
Answer: C
Explanation: it is C
B) The particles have sufficient energy to become an ionized gas and are in the most common state of matter in the universe.
C) The particles are not able to move out of their positions relative to one another, but do have small vibrational movements.
D) The particles are not bound to one another, move quickly, have a low density, and are able to spread apart from one another if unconstrained.
Brad and Matt are working in the lab. They noticed that when they mixed two dilute solutions together, the reaction between them happened very slowly. Which of Matt's suggestions would BEST help to increase the rate of this reaction?
A) increase the concentration of both solutions
B) decrease the concentration of both solutions
C) increase the concentration of one of the solutions
D) decrease the concentration of one of the solutions
Identify the correct order of increasing intermolecular force of attraction for the three most common states of matter.
A) liquid → solid → gas
B) solid → liquid → gas
C) gas → liquid → solid
D) gas → solid → liquid
distance = 3280 feet. This is the triangle's hypotenuse.
The distance from the ground is the opposite side as it is opposite the angle 42˚
Sin = Opposite/Hypotenuse
Sin(42) = Opposite/3280 Answer: 2195 feet
Cross multiply
Opposite = sin(42) x 3280
Opposite = 2194.7 feet
Answer: The relationship between " kWh " and " Joules " are :
1 kWh=1000 Watt×[60×60] seconds
1 kWh=10
3
W×3600 s
1 kWh=3.6×10
6
J
Answer:
Reflecting telescope
Explanation:
A concave mirror is used to concentrate the light falling on it.
A concave mirror of large focal length acts as a reflecting type telescope.
As the rays of light coming from distant object falls on it, then after reflection the rays concentrate at the focus of the concave mirror and then we see the clear image of the distant object.
Reflecting telescopes