Answer: In double slit case, you need to understand superposition on waves emerging from dirrerent slit.
Explanation: When passing a single slit, wave spread in all directions.
In double slit waves with equal wavelength travel different path and distance
trey travel is different . Waves meet each other in different positions in different phases. If phase are same, waves have contructive interference, crests of waves meet in same point. Amplitudes of waves are added together. If waves are in opposite phases, sum of amplitudes
ame subtacted and this is destructive interference. Sum of amplitudes are zero.
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Answer:
The most common oxidation numbers for a given element
A sound wave travelling in water at 10.2 m/s has a wavelength of 1.5 m.
Answer:
Frequency of sound wave in water = 6.8 Hz
Explanation:
Given:
Speed of sound wave in water = 10.2 m/s
The wavelength of the sound wave in water = 1.5 m
Find:
Frequency of sound wave in water
Computation:
Frequency = Speed of wave / Wavelength
Frequency of sound wave in water = Speed of sound wave in water / The wavelength of the sound wave in water
Frequency of sound wave in water = 10.2 / 1.5
Frequency of sound wave in water = 6.8 Hz
Car A of mass 1200kg traveling at 10m/s , collided in too the back of the car B, which is stationary. Following the collision,. The two cars stick together and travel at 6m/s. What is the mass of a car B?
Answer:
Car B has a mass of 800 kg.
General Formulas and Concepts:
Momentum
Law of Conservation of Momentum: [tex]\displaystyle m_1v_{1i} + m_2v_{2i} = (m_1 + m_2)v_{f}[/tex]
Explanation:
Step 1: Define
Identify variables
[Given] m₁ = 1200 kg
[Given] v₁i = 10 m/s
[Solve] m₂
[Given] v₂i = 0 m/s
[Given] vf = 6 m/s
Step 2: Solve for m₂
Substitute in variables [Law of Conservation of Momentum]: (1200 kg)(10 m/s) + m₂(0 m/s) = (1200 kg + m₂)(6 m/s)Multiply: 12000 kg · m/s = (1200 kg + m₂)(6 m/s)Isolate m₂ term: 2000 kg = 1200 kg + m₂Isolate m₂: 800 kg = m₂Answer:
Explanation:
Caraofmass1200kg
PLEASE HELP ASAP!!!!
Answer:
it's frequency
Explanation:
hope this helps :)
Answer:
its probably its frequency
Explanation:
-
a block is suspended 5 m above the ground if the block has a mass of 20 kg how much potential energy is stored in the block (g= 9.8 PE= m*g*h
Answer:
P.E = 980 Joules
Explanation:
Given the following data;
Mass = 20 kg
Height = 5m
Acceleration due to gravity = 9.8 m/s²
To find the potential energy stored in the block;
Mathematically, potential energy is given by the formula;
[tex] P.E = mgh[/tex]
Where,
P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
Substituting into the equation, we have;
[tex] P.E = 20 * 9.8 * 5 [/tex]
P.E = 980 Joules
Three swimmers who all swim at the same speed discuss how to cross a river in the shortest amount of time. Swimmer A will swim straight across the river at a right angle to the current. Swimmer B reasons that the current will carry A downstream, meaning that A will cover a greater distance to get across and therefore will take a longer time interval. B says he will aim at an upstream angle such that, allowing for the current, he will reach the other side directly across from where he starts, thus covering the shortest distance and arriving first. Swimmer C, reasoning that the time interval needed for B to cross will be longer than B expects because some of B’s effort will be spent battling the current, plans to aim at a downstream angle, so that the current assists rather than opposes him. This way he will be traveling at the highest speed and get across first. Which swimmer gets across first?
Answer:
Swimmer A
Explanation:
The time required for a swimmer to cross a river is equal to the width of the river which is divided by the magnitude of the component of the velocity which is parallel to the width of the river.
In the given context, all the three swimmers A, B and C swims in a different angle relative to the direction of the flow of river. The swimmer A swims straight at a direction perpendicular to the direction of current of the river across the width of the river, so A will have the largest velocity component which is parallel to the width of the river. So the time taken by swimmer A will be the least to cross the river.
A hammer taps on the end of a 4.8-m-long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by 8.40 ms. What is the speed of sound in this metal?
Answer:
The speed will be "872.7 m/s".
Explanation:
As we know,
At room temperature, speed of sound will be:
e = 345 m/s
In metal bar, sound's speed will be:
= [tex]v>e[/tex]
Let,
The pulse travel in time "t", then
⇒ [tex]t=\frac{4.8}{v}[/tex]
⇒ [tex]t+8.4\times 10^{-3}=\frac{4.8}{345}[/tex]
⇒ [tex]t+8.4\times 10^{-3}=0.01391[/tex]
⇒ [tex]t=5.5 \ ms[/tex]
hence,
The speed of sound will be:
⇒ [tex]v=\frac{4.8}{t}[/tex]
⇒ [tex]=\frac{4.8}{5.5}\times 10^3[/tex]
⇒ [tex]=872.7 \ m/s[/tex]
PLEASE HELP ME ASAP!!!!
Answer:
otinni oSame lage ta dili pud ko ka comment sa live Ni madamstin
Answer:
it can be used to locate underwater objects
A neutral metal can is mounted on a foam stand. A positively
charged balloon is brought near. The can is touched on the
opposite side.
Answer:
Negative
Positive
Explanation:
When a positive charge balloon is brought near the neutral metal can, the positive charge in the ballon, delocalization and arrangement of like charges occurs. The positive charge then flow to the an end while the negative charges flows to the other end.
Thus, after being touched, the charge on the can is negative.
And, If not touched, the charge on the ballon remains positive.
After being touched, the charge on the can is negative and the charge on the balloon is positive.
What is charging by friction?When the two materials are rubbed each other, then the electric charged generated between them.
This charging of materials due to the rubbing or two materials against each other, is called the charging by friction.
This force of attraction or repulsion is identified by the sign of the particular charge. According to the property of interacting charges-
Like charges-For the like charges, when two charges same charges (positive-positive or negative -negative) interact to each other, then the charges repel each other.Unlike charges-For the unlike charges, when two charges interact to each other, then the charges attract each other.Here, the neutral metal can is mounted on a foam stand. A positively charged balloon is brought near. The can is touched on the opposite side.
The positive charge on the balloon, make it to lose the electron. By this, the balloon become positively charged.
The atom on the opposite side have an excess of electron. Thus, the can become negatively charged.
Hence, after being touched, the charge on the can is negative and the charge on the balloon is positive.
Learn more about the charging by friction here;
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Which branch of science studies how sound waves move through the air?
A. Life science
B. Physical science
C. Space science
D. Earth science
Answer:
B is the correct answer
Explanation:
just bc I said so:)
What is the frequency of a 5 m wave traveling at the speed of 200 m/s
Explanation:
f=v/wavelength
=200/5
=40Hz
a small electric motor produces 5W of mechanical power.what is this power in:
a. N, m, and s units
b. Kg, m, and s units?
I think no a will be the answer
A 1,700 kg car is accelerated at 2.8 m/s? What force was needed to produce this acceleration?
Answer:
[tex]4,760\:\mathrm{N}[/tex]
Explanation:
From Newton's 2nd Law, we have [tex]\Sigma F=ma[/tex]. Substituting given values, we get:
[tex]F=1700\cdot 2.8,F=\boxed{4,760\:\mathrm{N}}[/tex]
the cotton plant bears white or yellow______
Answer:
white
hope this helps
have a good day :)
Explanation:
Sir Percival and his horse are standing still on a field of honor when Sir Rodney, atop his steed gallops by with a constant velocity of 3.00m/s. He flips Percival off as he passes by! Percival instantly begins to give chase with an acceleration of 0.600m/s2. Using Percival’s at rest position as zero, determine the time it takes for Percival to catch up to Rodney.
a. 4.0 s
b. 6.0 s
c. 8.0 s
d. none of these
Answer:
d. none of these
Explanation:
From the given information:
Let assume that Percival catches Sir Rodney's horse in time "t" after covering a certain distance "s"
Then, using the second equation of motion:
[tex]S = ut + \dfrac{1}{2}at^2[/tex]
FOR Percival, we have:
[tex]S = (0\times t ) + \dfrac{1}{2} \times 0.6 \ m/s \times t^2 \\ \\ S = 0.3 \ m/s \times t^2 -- -- (1)[/tex]
FOR Sir Rodney;
[tex]S = ut + \dfrac{1}{2}at^2[/tex]
[tex]S = (3\times t ) + \dfrac{1}{2} \times 0 \times t^2 \\ \\ S =3t--- (2)[/tex]
Equating both equations together; we have:
0.3t² = 3t
0.3t² - 3t = 0
0.3t(t - 10) = 0
If Percival's position at rest = 0
Then; t = 10 s.
what do you mean by wave
optics
Answer:
hope it helps.
stay safe healthy and happy.PLEASE HELP ASAP!!!!
For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal. Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport. They move the same direction as the wave.
A spring compressed by 0.10 m from its rest length launches 0.53-kg block (starting at rest) along a rough horizontal surface with the coefficient of kinetic friction 0.24. If the spring constant is 515 N/m, how far will the block slide from its initial position?
Answer: [tex]2.06\ m[/tex]
Explanation:
Given
Spring is compressed by 0.1 m from its rest length
Mass of block is 0.53 kg
The coefficient of kinetic friction is [tex]\mu_k=0.24[/tex]
Spring constant [tex]k=515\ N/m[/tex]
Here, the spring energy is consumed against work done by friction force
Friction force acting on the mass is [tex]F=\mu_kmg[/tex]
Writing Elastic potential energy equals work done by friction force
[tex]\Rightarrow \dfrac{1}{2}kx^2=\mu_kmg\cdot s\\\\\Rightarrow 0.5\times 515\times 0.1^2=0.24\times 0.53\times 9.8\cdot s\\\Rightarrow s=2.06\ m[/tex]
So, the block will slide up to a distance of [tex]2.06\ m[/tex]
explain the reason why water wet glass why Mercury does not
Answer:
Mercury does not wet the glass because the cohesive force with the drops is stronger than the adhesive force between the drops and glass.
...https://www.toppr.com › ask › en-us › question › merc..
Explanation:
1. Which of the following statement is correct?
A. You should panic when earthquake hits.
B. You should run while the earthquake is going on,
C. You should not follow what the proper authorities will tell you.
D. You should prepare an emergency plan to cope with the disaster.
2. What should you do during an earthquake?
A. You should run out of the house.
B. You should duck, cover, and hold.
C. You should panic and stay only inside the house.
D. You should lock your door so that nobody can enter,
Answer:
1.
D. You should prepare an emergency plan to cope with the disaster.
2.
B. You should duck, cover, and hold.
Explanation:
Because Panic and stress are the main reasons that make the situation worse during natural disasters. Disasters are aggravated when people add chaos to the equation. It's important not to panic during an earthquake. You must maintain a rational state of mind so that you don't do something regretful out of fear.
A. You should panic when earthquake hits. ❌
B. You should run while the earthquake is going on. ❌
C. You should not follow what the proper authorities will tell you. ❌
[tex]\sf\purple{D.\:You \:should \:prepare\: an \:emergency \:plan\: to \:cope\: with\: the\: disaster. }[/tex]✅
........................................................................
2. What should you do during an earthquake?A. You should run out of the house. ❌
[tex]\sf\pink{B.\:You\: should \:duck,\: cover, \:and \:hold.}[/tex] ✅
C. You should panic and stay only inside the house. ❌
D. You should lock your door so that nobody can enter. ❌
........................................................................
[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]
A ball is dropped freely from the top of a ten-floor building in which each floor is measured to be 2 m. Then the velocity of the ball at which it would hit the ground is ?
Answer:
19.80 m/s
Explanation:
From the question given above, the following data were obtained:
Height of each floor = 2 m
Total Height (h) = 2 × 10 = 20 m
Initial velocity (u) = 0 m/s
Acceleration due to gravity (g) = 9.8 m/s²
Final velocity (v) =?
The velocity at which the ball will hit the ground can be obtained as follow:
v² = u² + 2gh
v² = 0² + (2 × 9.8 × 20)
v² = 0 + 392
v² = 392
Take the square root of both side
v = √392
v = 19.80 m/s
Thus, the ball will hit the ground with a velocity of 19.80 m/s
Answer please: A box weighing 890 N is pulled along a horizontal surface by means of a string which is at 30° above the horizontal. If the coefficient of kinetic friction is 0.2 and the box is accelerated at 0.8 m/s2, what is the tension in the string?
Answer:
vertical problem:
normal force = weight - string up force
= 890 - T sin 30 = 890-.5 T
horizontal problem:
T cos 30 - .2(890-.5T) = (890/9.81) (0.8)
solve for T
The tension in the string is 257.97 N.
What is meant by tension ?A force that acts along the length of a medium, particularly one conveyed by a flexible medium like a rope or cable, is said to be the tension.
Here,
Weight of the box, W = 890 N
Mass of the box, m = 890/10 = 89 kg
Angle made by the string, θ = 30°
Coefficient of kinetic friction, μ = 0.2
Acceleration of the box, a = 0.8 m/s²
The normal force acting on the box,
Fn = W - Ty
Fn = W - T sin30°
Fn = 890 - T/2
So, the frictional force acting on the box can be given as,
f = μ x Fn
f = 0.2(890 - T/2)
Therefore, the net force acting on the box will be,
ma = Tₓ - f
89 x 0.8 = T cos30° - 0.2(890 - T/2)
0.966 T = 249.2
Therefore, the tension in the string,
T = 249.2/0.966
T = 257.97 N
Hence,
The tension in the string is 257.97 N.
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i need help with these questions thank u
Answer:
duvergentv boundaries
35 points! Will give brainliest!
What is electrical current?
A) The potential difference between two points in an electrical circuit.
B) The rate at which electrical energy is transferred.
C) The flow of electrons through a conductor in an electric circuit.
D) All of the above.
Answer:
C ...................
What is the Faraday's Law all about?
Answer:
It is a Basic law of electromagnism.
Explanation:
Hope this helps! Please make this Brainliest lol
I want the answer and that’s all
Answer:
Cuboid?
Explanation:
A 20" round duct is 275' in length. The duct is carrying 2,900 CFM at a friction loss of 0.12 inches WG per 100 feet.
What is the total friction loss through the duct?
The is a pulley system as shown in the diagram. Mass one has a magnitude of 5.11 kg, and mass two has a magnitude of 3.01 kg. If the static frictional force has a magnitude of 31.833N. and the system is stationary, then determine Theta and the normal force.
if someone can answer quickly it's very much appreciated.
Maybe b normal focrec N??
6 When a rubber ball is dropped it hits the floor and bounces. Design an investigation to determine how the temperature of the rubber ball affects the maximum height the ball reaches after it bounces. In your answer, refer to . how to change the temperature of the ball the variables that need to be controlled how to obtain high-quality data
As the temperature is increased, the maximum height that the ball reaches is decreased.
What is an experiment?We know that an experiment would have to have an independent variable and a dependent variable. The independent variable is the variable that we would have to change as the reaction is taking place. The dependent variable is variable that is altered as we effect changes in the dependent variable.
Having said that, we can see that in the reaction that we are carrying out here, the temperature of the rubber ball is the independent variable while the maximum height the ball reaches after it bounces is the dependent variable. This would help us to be able to know what happens in the experiment that has been described.
The increase in the temperature would cause the gases to expand and the ball would no longer move very high again.
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Every household has at least one refrigerator, many hotels have ice makers. you may have wondered how much heat energy a refrigerator / ice maker takes
from water to make ice. Compute the amount of energy an
ice maker extracts from 200g of water at 34°c to manufacture ice at 0°c.
Answer:
1.heading
2.photo
3.boldface text
4.caption
5.bulleted list
Explanation:
you welcome