Answers
Answer:
I. They come from sources across space
II. They travel in a straight line from their source.
III. They can be reflected by some types of material.
Explanation:
Light wave can be defined as an electromagnetic wave that do not require a medium of propagation for it to travel through a vacuum of space where no particles exist.
The following statements about light waves are true;
I. They come from sources across space.
II. They travel in a straight line from their source.
III. They can be reflected by some types of material. reflection occurs when a ray of light or wavefronts bounces off a smooth surface. Thus, when light hit a surface, it bounces back to the medium from which it was originally propagated with.
However, light waves cannot travel through all type of material except materials that are transparent or translucent but not opaque.
Related Questions
What type of relationship exists between the rams?
Answers
Answer:
The relationship the exist between the rams is a mild one.
Explanation:
The graph shows the amplitude of a pausing wave over time in secondo (o).
What is the approximate frequency of the wave shown?
A. 0.5 Hz
B. 0.1 Hz
C. 9 Hz
D. 20Hz
Answers
Answer:
its B
Explanation:
i just took the test
0.1 Hz the approximate frequency of the wave shown.
What is Frequency?In physics, frequency is the number of waves that pass a fixed point in a unit of time as well as the number of cycles or vibrations that a body in periodic motion experiences in a unit of time.
After moving through a sequence of situations or locations and then returning to its initial position, a body in periodic motion is said to have experienced one cycle or one vibration. See also basic harmonic motion and angular velocity.
The frequency is 2 per second if the period, or time interval, needed to complete one cycle or vibration is 1/2 second; it is 100 per hour if the duration is 1/100 of an hour.
Therefore, 0.1 Hz the approximate frequency of the wave shown.
To learn more about Frequency, refer to the link:
https://brainly.com/question/5102661
#SPJ5
________ 8. The pH of a solution is a measure of the concentration of H+ ions in it. TRUE OR FALSE
Answers
Answer:
False.
Explanation:
Potential of Hydrogen is the full form of PH.
Potential of Hydrogen tells about the acidity or basicity of the solution.
The pH of a solution is a measure of the concentration of hydrogen ions [tex](H+)[/tex] ions and hydroxide ions [tex](OH-)[/tex] in a solution.
So, the given statement is false.
uses of convace, convex mirror
Answers
Answer:
The concave mirror is a converging mirror so that it is used for many purposes, It is used as a torch to reflect the light, It is used in the aircraft landing at the airports to guide the aeroplanes, It is used in shaving to get an enlarged and erect image of the face.
Explanation:
How much work is performed when a 50 kg crate is pushed 15 m with a force of 20 N?
Answers
Answer:
300 jules
Explanation:
You can take your heart rate for 6 seconds and multiply by 10 to get the 60 second count quickly during
True
False
Answers
Answer:
true
Explanation:
1. An elephant has a mass of 5,500 kg. What is the elephant's weight?
Write equation here:
Answers
Answer:
12125.42 Lbs.
Explanation:
The weight of the elephant is 53,900 N
The given parameters;
mass of the elephant = 5,500 kg
The weight of the elephant is calculated as;
Weight = mg
where;
m is the mass of the elephant
g is acceleration due to gravity = 9.8 m/s²
The weight of the elephant is calculated by substituting the given parameters;
Weight = 5,500 x 9.8 = 53,900 N
Thus, the weight of the elephant is 53,900 N
Learn more here: https://brainly.com/question/9716562
The principal ran a marathon, 26.2 miles in 3 hours. This is an example of.....
A-speed
B-velocity
C-acceleration
Answers
8.73 mph = 26.2/ 3
What could you use to split white light into the colors of the rainbow?
A. A flashlight
B. A capacitor
C. A light bulb
D. A prism
Answers
Answer:
D
Explanation:
Answer:
prism
Explanation:
How long will it take a bear to run 45 meters if it is traveling at 10m/s
Answers
Help anyone ? I need to pass this test !!!
Sitting causes your hip flexors to shorten, this can cause:
a.
weight gain
b.
heart disease
c.
tight hips
d.
varicose veins
Answers
Answer:
c. tight hips
Explanation:
sitting for too long is a major culprit in tightening the hip flexors. When you sit all day at a desk, the iliopsoas, in particular, shortens, making the flexors tight.
HELLPPP!!!
which of the following is a human action that could lead to decreased amounts of greenhouse gases found in the atmosphere, such as carbon dioxide?
A ) Generating energy by burning coal
B ) Deforestation
C ) Driving Automobiles
D) Planting Trees
Answers
Answer:
D
Explanation:
planting trees because they store these gases and turn it into oxygen
Answer:
It is going to be D.
Explanation:
Hope this helps
what is linear magnification
Answers
Answer:
Linear magnification refers to the ratio of image length to object length measured in planes that are perpendicular to the optical axis. A negative value of linear magnification denotes an inverted image.
Explanation:
Answer:
i hope it help
Explanation:
stay happy and safe
A wave has a wavelength of 0.02m and period of 8.0*10^-2 seconds. calculate it's speed. (showing working)
Answers
Answer:
[tex]v = 0.25m/s[/tex]
Explanation:
Given
[tex]\lambda = 0.02m[/tex] --- Wavelength
[tex]T = 8.0 * 10^{-2}s[/tex] --- Period
Required
Determine the velocity of the wave
This is calculated using:
[tex]v = \frac{\lambda}{T}[/tex]
[tex]v = \frac{0.02m}{8.0*10^{-2}s}[/tex]
[tex]v = \frac{0.02m}{8.0*0.01s}[/tex]
[tex]v = \frac{0.02m}{0.08s}[/tex]
[tex]v = 0.25m/s[/tex]
Hence, the velocity is 0.25m/s
Calculate equivalent resistance in the following between points P and Q.
Answers
[tex] \sf{(i) \: We \: are \: given \: a \: figure \: of \: Series \: Circuit. }[/tex]
[tex] \sf{Here \: Resistances \: are ,}[/tex]
[tex] \sf• \: R_{1} =3 Ω[/tex]
[tex] \sf• \: R_{2} =3Ω[/tex]
[tex] \sf• \: R_{3} =3Ω[/tex]
[tex] \sf{We \: know \: the \: formula \: of \: the \: Equivalent \: Resistance \: for \: Series \: Circuit, }[/tex]
[tex] \bf \red {\bigstar {\: R_{s} = R _{1} + R _{2} + R_{3}+...+ R_{n}}}[/tex][tex] \sf ⇒ R_{s} =(3 + 3 + 3)Ω[/tex]
[tex] \sf \therefore R_{s} =9Ω[/tex]
[tex] \sf \pink{ \boxed{Answer : 9 Ω.}}[/tex]
[tex] \\ \\ [/tex]
[tex] \sf{(ii) \: We \: are \: given \: a \: figure \: of \: Parallel \: Circuit. }[/tex]
[tex]\sf{Here \: Resistances \: are ,}[/tex]
[tex] \sf• \: R_{1} =3 Ω[/tex]
[tex] \sf• \: R_{2} =3 Ω[/tex]
[tex] \sf• \: R_{3} =3 Ω[/tex]
[tex] \sf{We \: know \: the \: formula \: of \: the \: Equivalent \: Resistance \: for \: Parallel \: Circuit, }[/tex]
[tex] \bf \red {\bigstar {\: \frac{1}{R_{p}} = \frac{1}{R _{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}+...+\frac{1}{R_{n}} }}[/tex][tex] \sf⇒ \frac{1}{ R_{p} } = \frac{1}{3} + \frac{1}{3} + \frac{1}{3} [/tex]
[tex] \sf⇒ \frac{1}{ R_{p} } = \frac{1 + 1 + 1}{3} [/tex]
[tex] \sf⇒ \frac{1}{ R_{p} } = \frac{3}{3} [/tex]
[tex] \sf⇒ \frac{1}{ R_{p} } = 1[/tex]
[tex] \sf \therefore R_{p} = 1Ω[/tex]
[tex] \sf \pink{ \boxed{Answer : 1 Ω.}}[/tex]
hope it helps you.
Electromagnetic waves from the sun reach the earth even though the space between us and the sun. Sound waves emitted by the sun cannot reach the earth. Explain why this difference?
Answers
Answer:
em waves do so because they require no medium to travel...space =vacuum)))
while sound waves that are longitudinal waves...require medium to travel......so in space it has vacuum.....it can't travel..
You apply a force of 68N to lift a box 4m off the ground in 2s. What was your power?
Answers
Answer:
136........
.............
10 points whats an average height for a egg drop? 20m or what?
Answers
Answer:
Egg Drop Challenge height
The containers will be dropped from an initial height of about 11.5 ft. The second and final drop will be from the second floor (about 19.5 ft).
Explanation:
If a velocity-time graph is horizontal, then acceleration is
a
zero.
b
positive
С
less than 1.
d
none of the above
Answers
If the velocity-time graph is horizontal, the acceleration is zero because the slope will be zero.
pls help me with it..fast as possible...pls .....
Answers
Answer:
Because the light only spears to part of the water so it would appear less deep
Why is photosynthesis essential for plant homeostasis?
a
To color leaves green
b
To make food for the plant
c
To remove carbon dioxide from leaves
d
To make new types of cells
Answers
A how igneous rocks were formed over time
B the remains of dead plants and animals settle to the bottom of an
ocean or lake and are covered by mud
C a trace or print, or the remains of a plant or animal of a past age
preserved in earth or rock
D layers of sediment building up over time and pressing down. forming
rock
why do other gases in the air not condense and change States
Answers
Answer:
b) the air does not get warm enough
A car engine produces a force of 2000N while moving a distance of 200m in a time of 10s. What is the power developed by the engine
Answers
Work = force * distance
(2000 N * 200 m) / 10 s = 40,000 Joules
Whose atomic theory was the first to introduce the idea that all things are made from indivisible spheres called atoms and used evidence and research to back his findings? *
Answers
Answer:
Dalton's atomic theory
Explanation:
Dalton's atomic theory was the first to introduce the idea that all things are made from indivisible spheres called atoms and used evidence and research to back his findings. This theory was based on the law of constant composition and the law of conservation of mass. Also, this theory explains the matter in terms properties of atoms.
Which one is a element??
Answers
Answer:
A.) Carbon
Explanation:
Carbon is an element on the periodic table.
it has the symbol C, and is found in almost every single thing!
Answer:
Carbon
Explanation:
Ig
Please answer fast!!!
which of the following is an example of unbalanced force?
1. A chair leaning on a wall
2. A stroller being pushed
3. A ball on the grass
4. A book sitting on a table
Answers
Answer:1. A chair leaning on a wall
Explanation:
What does the model below represent?
2CO + O2 → 2C02
A. An experiment
B. A chemical reaction
C. A release of heat
D. The production of oxygen
Answers
Answer:
B. a chemical reaction
Explanation:
2CO + O2 → 2C02
Answer:
B. A chemical reaction
it's formed when carbon monoxide react with oxygen and forms carbon dioxide
______ images are obtained when the plane mirror are kept parallel to the each other
Answers
.infinite.
&
also
.virtual.
Examine the cross-sectional slice of a stem of a mint plant. Which statement most specifically describes mint?
Answers
The available options are:
Mint is a dicot.
Mint is a monocot.
Mint is an angiosperm.
Mint is a bulb plant.
Answer:
Mint is a dicot.
Explanation:
Given the fact that Mint is considered to be a member of Lamiaceae, an angiosperm plant which is characterized by typically having leaves that consist of reticulate vacation and appears like veins in structure. It also has a seed that contains two cotyledons.
Hence, it is considered a DICOT PLANT due to these characteristics. The botanical name of Mint is referred to as Mentha arvensis.
Answer: A
Explanation:
How long would it take for a car to travel 22km if it has an average speed of 55 km/hr
Answers
Distance = (speed) x (time)
Time = (distance) / (speed)
Time = (22 km) / (55 km/hr)
Time = (22/55) (hr)
Time = 0.4 hour (that's 24 minutes)