yes
evaporation starts on the surface
Answer:
b 2 only
Explanation:
The mass of an electron is 9.10938356 × 10⁻³¹ kilograms while the mass of a proton is 1.6726219 × 10⁻²⁷ kilograms. It can be seen that a proton is heavier than an electron.
Atoms do not always have the same number of neutrons and protons. For, example ¹³C has 6 protons and 7 neutrons.
Atoms do have most of the mass concentrated at the center called the nucleus. The nucleus has protons and neutrons. As protons have positive charge and neutrons have no charge the nucleus has a positive charge.
Answer:
The index refraction of the unknown material is 1.08
Explanation:
Light has characteristics of a wave. When light travels or propagates through two media with different index of refraction, the light will bend or will change its speed.
Using Snells' law which is stated mathematically as:
n1Sintheta1 = n2Sinthetha2
Given:
n1 = 1.17
Theta1 = 40.1° = angle of incidence
Theta2 = 36.3° = angle of refraction
n2 = unknown
Substituting into the equation
n1Sin40.1 = 1.17Sin36.3°
0.6441n1 = 0.6937
n1 = 0.6937/0.6441
n1 = 1.08
Answer:
all magnets have opposite poles (north and south)
magnetic domains are aligned
moving electrons generate a magnetic filed
movement of electrons creates a magnets field
The resulting wave will have zero amplitude, thus it will form a straight line.
<h3>What is a crest?</h3>
A crest is an upward displacement of a progressive wave.
<h3>What is a trough?</h3>
A trough is a downward displacement of a progressive wave.
<h3>Superimposition of the two waves</h3>
When the two waves meet each other at point X, they will superimpose and cancel out since they have equal amplitude and are in opposite direction.
The resulting wave will have zero amplitude, thus it will form a straight line.
Learn more about crest here: brainly.com/question/1430231
#SPJ1
