Answer:
Change in velocity = 0.219 × 10⁸ m/s (Approx)
Explanation:
Given:
Ray moving through glass (n1) = 1.51
Ray moving through (n2) = 1.36
Find:
Change in velocity.
Computation:
Speed of light = 3 × 10⁸
Change in velocity = [(c/n2) - (c/n1)]
Change in velocity = [(c/n1) - (c/n1)]
Change in velocity = 3 × 10⁸[(1/1.36) - (1/1.51)]
Change in velocity = 3 × 10⁸[0.7352-0.6622]
Change in velocity = 3 × 10⁸[0.073]
Change in velocity = 0.219 × 10⁸ m/s (Approx)
WILL GIVE BRAINIEST TO CORRECT ANSWER
Define loudness and intensity of sound. How are the two concepts related?
Answer:
Hey mate, here's ur answer
-------------------------------------------------------------
Loudness refers to how a sound seems to a listener, whether it's loud or soft.
___________________________
Intensity is the sound power per unit area. It is independent of the sensitivity of the human ears.
___________________________
The loudness of a sound relates the intensity of any given sound to the intensity at the threshold of hearing. It is measured in decibels (dB).
___________________________
Hope this helps
#stayhomestaysafemate
:D
The distance between two crests of a transverse wave is referred to as the Question 1 options: medium. amplitude. wavelength. phase.
Answer:
Wavelength
Explanation:
Wavelength
Answer:
Wavelength
Explanation:
Which statements accurately describe the motion map?
Check all that apply.
-The objects are moving in the same direction
-The objects are moving in opposite directions.
-Object A has a greater velocity than object B.
-Object B has a greater velocity than object A.
-Objects A and B have the same velocity
Answer: B & D
Explanation:
The objects are moving in opposite directions is the statements accurately describe the motion map, therefore the correct answer is option B
What is displacement?An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard. Displacement describes this shift in location.
It is a vector quantity to be displaced. This means that it is visually represented as an arrow that points from the starting position to the ending position and that it has both a direction and a magnitude.
The total distance traveled by an object is different than the total displacement covered by it because the displacement is a vector quantity and it is calculated on the basis of the shortest distance traveled by the body or object.
Thus, The objects are moving in opposite directions is the statements accurately describe the motion map, therefore the correct answer is option B
Learn more about displacement here
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which of the following best describes a mathematical wave
A: A transfer of energy
B: A movement of matter
C: When energy is converted from one form to another
D: A periodic disturbance of a medium
Answer: D:
A periodic disturbance of a medium
Explanation:
A wave can be Mathematically defined by periodic disturbance of a medium. That is, oscillations of the waves about a fixed position or change in position from the resting equilibrium position. The wave oscillate from equilibrium position with amplitude periodically.
a convex lens can produce a real image but not a viral image
a. true
b. false
Answer:
True
Explanation:
A convex lens can produce a real image, but not a viral image
Which of the following atoms has the smallest radius?
The Periodic Table
What recommendations would you give to the global governments to help decrease the global effects of human impact on the environment? List 2 recommendations and how they will positively impact our planet.
Answer:
he scientific and political arguments surrounding the health of our planet can make the whole topic seem beyond the grasp of the individual. How fast is the climate changing? Exactly what effect to humans have? And what will the government do about it?
How we treat Earth also involves trillions of little decisions by billions of individuals.
That in mind, on this Earth Day, LiveScience presents 10 ideas for saving energy and otherwise cutting down on your impact on the planet. The list was compiled by the Earth Day Network organization and republished here with permission
hope this helps u stay safe
Answer:
promote green energy.
Explanation:
Is there gravity in space. True False
True. There IS gravity in space. Tons of it.
Convert 55 inches to centimeters.
I need this quick pls
The right answer is 139.7 centimetres
1 inches=2.54 centimetres
Please see the attached picture for full solution
Hope it helps
Good luck on your assignment
Answer:
139.7 cm
Explanation:
Which of the following statements is true about voltage in a series circuit?
a) The voltage across each branch is the same as the total voltage.
b) The sum of the voltages across each branch is equal to the total voltage.
Oc) There is no voltage in a series circuit.
d) The voltage is the same across each branch in the circuit.
The sum of the voltages across each branch is equal to the total voltage is
true about voltage in a series circuit.
What is a Series circuit?This is the type of circuit in which the whole current flows through each
component and is not divided.
In a series circuit, the total voltage equals the sum of the voltages across
each branch where individual components are present.
Read more about Series circuit here https://brainly.com/question/19865219
Water is a compound.
O A. True
B. False
An airplane flies 40km directly south in 10 minutes and 20 km directly east in five minutes, its average speed is:
a)2.98km/min
b)2km/min
c)8km/min
d)4km/min
Answer:
D. 4km/min
Explanation:
Since the question deals with "speed" and not "velocity", the direction does not matter.
the plane covers 40 + 20 km=60km in 10mins +5 mins=15mins
60 km - 15 mins
1min- 60÷15= 4 mins
therefore, your answer is D. 4km/min
Neutralization _____.
A.) forms an acid and a base
B.) occurs when an acid is dissolved in water
C.) occurs when a base is dissolved in water
d.) is a reaction between an acid and a base
In the table below, which statement would best fill the missing box under “Closed System”? Open System Closed System Matter freely moves Matter does not freely move Energy freely moves Energy is unknown Energy is destroyed Energy does not freely move Energy freely moves
Answer:
energy moves freely
just guessing
Answer:
C: Energy does NOT move freely
Explanation:
a closed system does not allow energy to flow, open systems do.
Pls can someone help
Answer:
ITS THE LAST ONE(4TH), I THINK
Explanation:
Answer:
The answer is Diagram 2(top right) and Diagram 4(bottom right)
Explanation:
In a magnet, the magnetic field will always move from North to South.
North will give out magnetic field and South will receive it.
PLEASE HELP <3
what is the mass of mr. thomson’s prius if his kinetic energy is 641300 J when he is driving at a velocity of 22 meters per second on the highway? please show work
Answer:
The mass of Mr. Thomson’s prius is 2650 kg.
Explanation:
We are given with, the kinetic energy of Mr. Thomson’s prius is 641300 J
He is moving with a velocity of 22 m/s
It is required to find the mass of Mr. Thomson’s prius.
Due to his motion, a kinetic energy will possess by him. The mathematical form of kinetic energy is given by :
[tex]K=\dfrac{1}{2}mv^2[/tex]
Solving for m
[tex]m=\dfrac{2K}{v^2}[/tex]
Plugging all the values, we get :
[tex]m=\dfrac{2K}{v^2}\\\\m=\dfrac{2\times 641300}{(22)^2}\\\\m=2650\ kg[/tex]
So, the mass of Mr. Thomson’s prius is 2650 kg.
A dog walks along The ground. If the dog applies an action force on the ground, what is the reaction force?
Please HELP
Explanation:
Action and reaction are two forces that are equal in magnitude but the direction is opposite.
When a dog walks along the ground, the action force is the force that dog applies on the ground. On the other hand, the reaction force is the force that the ground applies on the dog. It is based on Newton's third law of motion.
Four identical 2.5 mF capacitors are connected together electrically. What is the greatest possible capacitance of the combination? 0.50 mF, 0.42 mF, 0.63 mF, 10 mF, or 0.40 mF?
When capacitors are in PARALLEL, they add up. (like resistors in series)
If you connect these four capacitors in parallel, the combination behaves like a single capacitor of (4 x 2.5) = 10 mF.
That's the greatest capacitance you can make with these four pieces.
Emotional management is to: prevent, control, redirect, and change.
A.
True
B.
False.
HELP MEH
Answer:
true
Explanation:
management -> to control
Answer:
true
Explanation:
I took the quiz
A tungsten-filament lightbulb emits light based on the temperature of the
filament. Which phenomenon does this demonstrate?
A. Photoelectric effect
B. Blackbody radiation
C. Quantum mechanics
D. Emission spectra
The diagram shows the scales used for recording
temperatures. The labels for the scales are missing.
W
х
Y
Water
boils
212
100
373
-
Which labels complete the diagram?
W: Fahrenheit
X: Celsius
Y: Kelvin
OW: Kelvin
X: Celsius
Y: Fahrenheit
W: Celsius
X:Fahrenheit
Y: Kelvin
W:Celsius
X. Kelvin
Y. Fahrenheit
Water
freezes
_32
02
273
-273
Absolute 460
zero
Answer:
A.
W: Fahrenheit
X: Celsius
Y: Kelvin
Explanation:
this is correct, I took the test on edge.
The scales W X Y in that order are; Fahrenheit, Celsius and Kelvin.
What is a temperature scale?The temperature scales essentially provide a basis for the measurement of temperature. The three main temperature scales are; Fahrenheit, Celsius and Kelvin. The Kelvin is called the absolute scale.
Given the values of the boling points of water, the scales W X Y in that order are; Fahrenheit, Celsius and Kelvin.
Learn more aout temperature sclaes: https://brainly.com/question/10095561
When leaving a fish tank, a ray moving at 31.0 deg in glass (n = 1.50) exits into the air. At what angle does it enter the air?
Answer:
50.5
Explanation:
Using Snell's Law, you can rearrange the equation to solve for the 2nd angle. The most important part of this question is remembering to use the 1.50 n in the numerator and 1.00n in the denominator. The reason for this is because 1.50's degree is already found: 31.0. You're looking for the degree where the ray hits air, which would be the 1.00 n. So, the equation looks like this: Sin^-1 (1.50sin(31)/ 1.00). After solving the equation, you get 50.5 or 50.6 if you round up. I hope this was helpful! :)
Answer:
50.5
Explanation:
right on acellus
Complete the sentences to describe the postulates of Einstein’s special theory of relativity.
Einstein’s special theory of relativity has two postulates.
The first postulate states that the laws of physics are the
answer: same
in all uniformly moving reference frames.
The second postulate states that the speed of light in a vacuum has the same value for all
answer: observers
, regardless of the state of
answer: motion of the observer or the source of light.
I am posting for others... feel free to take the points
Answer:
awwh thanks for the free points
The special relativity hypothesis is accepted by all physicists. Even our satellites in orbit must synchronize their clocks and transmissions with those on Earth using Einstein's calculations.
What Einstein’s special theory of relativity?According to special relativity, speed has an impact on space, time, and mass. Small amounts of mass (m) can be interchangeable with vast amounts of energy (E), as indicated by the classic equation E = mc2. This method of defining the link between energy and matter is included in the theory.
Therefore, The relationship between speed, mass, time, and space is described by Einstein's special relativity theory. It describes the equation e=mc2, which asserts that energy is equal to mass times the square of the speed of light.
Learn more about Einstein’s here:
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State the section of the graph (A, B, C, or D) where the car is moving the slowest.
Explain your answer.
b) Calculate the average speed of the car over the whole journey.
100 points and brainliest
Answer:
D 15m/s
Explanation:
1)you find the speed covered in all the points e.g on speed=distance covered
time taken
a)300m\15s=20m/s
b)rest no distance covered
c)(1000-300)=700m time=(60-35)=25. 700m/25s=28m/s
d)(1200-1000)=300m time=(80-60)=20s
200m/20s=10m/s
thus the lowest speed was 10m/s at D
Average speed=average distance
average time
=1200m/80s. =15m/s
Is the Phosphorus element a metal?
Answer:
No phosphorus is not a metal.
Explanation:
Light of wavelength 525 nm passes through a double slit, and makes its second maximum (m = 2) at an angle of 0.482 deg. What is the separation of the slits , d, IN MILLIMETERS ?
Answer:
d = 0.124 mm
Explanation:
It is given that,
Wavelength of light is 525 nm
It makes second maximum at an angle of 0.482 degrees
We need to find the separation of the slits.
For 2nd maximum, the equation for double slip experiment is given by :
[tex]d\sin\theta=n\lambda[/tex]
d = separation of the slits
[tex]d=\dfrac{n\lambda}{\sin\theta}\\\\d=\dfrac{2\times 525\times 10^{-9}}{\sin(0.482)}\\\\d=0.124\ mm[/tex]
So, the separation of the slits is 0.124 mm.
Answer: 0.124
Explanation: TRUST ME BROOO
When an object rolls over a surface, the kind of friction that occurs is called
friction.
Answer here
Answer:
Rolling Friction
Explanation:
But only write rolling on the blank space
Answer:I miss her
Explanation:
How long will it take this wave to travel 3000 m in the x-direction?
Answer:
2.4
Explanation:
i got it right on edge
Steroid use in females can cause masculine characteristics, such as lower voice and increased body hair." True False
Answer:
True
Explanation:
Side affects can range from
Problems with periods to Loss of breasts
The reflection of a 10.0 cm object appears to be 18 cm tall and 9 cm behind the mirror.
What distance is the object from the mirror?
cm
Answer: 5cm
Explanation:
Given the following :
Image height = 18cm
Object height = 10cm
u = object distance
v = image distance = 9 cm
Using the relation:
image height/object height= v/u
18/10 = 9/u
Cross multiply
18 × u = 10 × 9
18u = 90
u = 90/18
u = 5cm
Therefore,
Object distance from mirror = 5cm
Answer:
5 cm
Explanation:
correct on edge 2020/2021
