The diagram shows monochromatic light passing through two openings.
What do the areas labeled X and Y represent?
constructive interference in which waves cancel each other out
constructive interference in which waves strengthen each other
destructive interference in which waves cancel each other out
destructive interference in which waves strengthen each other
Answers
Answer: constructive interference in which waves strengthen each other
Explanation:
Answer:
destructive interference in which waves cancel each other out
Explanation:
right on edge
Related Questions
How are an engineer and a carpenter different
Answers
Answer:
engineers plan, carpenters do the manual work
Explanation:
engineers plan and sketch out the blueprint, while carpenters do the cutting, shaping and fastening of wood material, carpenters do the construction and repair
Answer:
The engineers do most of the planning and sketching of the plan, While a carpenter's job is to perform work entailing the cutting, shaping, and fastening of wood or material such as fiberboard that is treated as wood.
Explanation:
Carpenters perform the two principal jobs of construction and repair. Other then an engineer.
Sound waves are longitudinal waves. The height or intensity of the wave shows it's amplitude or the energy in the wave. In the diagram of a sound wave, the section labeled D shows the area of the sound wave with the
A) most amplitude and most compression.
B) most amplitude and most rarefaction.
C) least amplitude and most compression.
D) least amplitude and most rarefaction.
Answers
Answer:
most amplitude and compression .
Explanation:
Assume that you are performing general maintenance on your bicycle using a black lubricant. When you lubricate the brake levers, what type of
fingerprints are you most likely to leave on them?
Answers
When lubricating the brake levers of a bicycle with a black lubricant, you are most likely to leave dark or smudged fingerprints on them. The black lubricant can transfer onto your fingers and when you touch the brake levers, it can leave visible marks that correspond to your fingerprints.
Fingerprints are typically formed by the natural oils and sweat on our skin, and lubricants like oil or grease can actually mask or reduce the visibility of fingerprints.
Therefore, if you are using a black lubricant on the brake levers, you would not leave distinct fingerprints on them. Instead, you may leave smudges or marks from the lubricant itself, which can be visible on the surface of the levers.
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A crane motor exerts 3,500.0 W to lift a load up 5 floors in 25.0 seconds. The crane did how much J of work.
Answers
Answer:
87,500 J
Explanation:
Power = energy / time
3,500.0 W = E / 25.0 s
E = 87,500 J
What are the products in the photosynthesis equation?
A) 02 and energy
B) CO2 and 02
C) Glucose and 02
D) 02 and sunlight
Answers
Answer:
C
Explanation:
Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide( co2 ) into a sugar called glucose ( c6h12o6 ). Glucose is used by plants for energy and to make other substances like cellulose and starch.
A toy consists of two identical spheres connected by a string with negligible mass. The toy is thrown at an angle above the horizontal such that the string remains taut and both sphere are revolving counterclockwise in a vertical plane around the center of the string.
when the toy was released, the center of the string was moving with an initial speed of 15m/s at a 60 degree angle above the horizontal. What is the speed of the center of the string at the instant when the string reaches the top of its trajectory?
Answers
Answer:
7.5 m/s
Explanation:
The center of the string is a single point following projectile motion. At the top of its trajectory, the vertical component of the velocity is 0 m/s. In the horizontal direction, assuming negligible air resistance, the acceleration is 0 m/s², so the horizontal velocity is the same as the x component of the initial velocity. Therefore, the net speed of the center of the string is equal to the initial horizontal component of the velocity.
v = vₓ = 15 m/s cos 60° = 7.5 m/s
At the top of the trajectory, the speed of the center of the string is the same as the initial horizontal velocity, which is 7.5 m/s. This is because the vertical component of the velocity becomes zero while the horizontal component remains unchanged. Thus, the speed of the center of the string is 7.5 m/s.
To determine the speed of the center of the string at the top of its trajectory, we need to consider the initial conditions and the influence of gravity on the projectile motion.
The toy is thrown with an initial speed of 15 m/s at an angle of 60 degrees above the horizontal. We can break this down into horizontal and vertical components:
Initial horizontal velocity: v_x = v_0 cos(θ) = 15 m/s x cos(60°) = 7.5 m/sInitial vertical velocity: v_y = v_0 sin(θ) = 15 m/s x sin(60°) ≈ 13 m/sAt the top of the trajectory, the vertical component of the velocity becomes zero since the toy momentarily stops moving upwards and is about to start descending. The horizontal component, however, remains unchanged as there is no horizontal acceleration acting on it (ignoring air resistance).
Therefore, at the top of the trajectory, the speed of the center of the string is the horizontal component of the initial velocity: 7.5 m/s.
What were the provisions of the 1973 Vietnam War cease-fire?
Check all of the boxes that apply.
The United States would return its prisoners of war.
The United States would allow South Vietnam to decide its own future.
Communist forces would return their prisoners of war.
The United States would keep troops in Vietnam.
Communist forces would not send more soldiers to South Vietnam,
Answers
Answer:
BCE
Explanation:
The provisions of the 1973 Vietnam War cease-fire are
The United States would allow South Vietnam to decide its own future.Communist forces would return their prisoners of war.Communist forces would not send more soldiers to South Vietnam.What is Vietnam located?Vietnam is a country located in the southeast Asian region on the Indochinese peninsula. It was under french colonial rule rule since 19th century.
Given are the provisions of the 1973 Vietnam War cease-fire.
The provisions of the 1973 Vietnam War cease-fire are
The United States would allow South Vietnam to decide its own future.Communist forces would return their prisoners of war.Communist forces would not send more soldiers to South Vietnam.Therefore, the provisions of the 1973 Vietnam War cease-fire are
The United States would allow South Vietnam to decide its own future.Communist forces would return their prisoners of war.Communist forces would not send more soldiers to South Vietnam.To solve more questions on Vietnamese war, visit the link below -
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A cd player uses a ___ to convert info to an electrical signal
A. Neon light
B. Sodium vapor light
C. Laser
Answers
The revolution period for Venus is___days.
121
225
156
212
(PLS ANSWER ASAP)
Answers
Answer:
225
Explanation:
The period of rotation of Venus is 243 Earth days, which is longer than the 225 days it takes the planet to orbit the sun. Moreover, the rotation is in the opposite direction from other planets in the solar system.
Answer:
225
Explanation:
A spoonful of oil has poor solubility in water. Would a cup of oil dissolve into water?
Answers
Answer:
No
Explanation:
The density of the oil is different from the density of the water.
find the unit of length,mass and time if the unit of force, velocity and energy are respectively 100N,10ms^1and 500J
Answers
Answer:
Mass = 5 unit
Length = 5 unit
Time = 0.5 unit
Explanation:
As we know that the units are as following
Force = 100 N
Velocity = 10 m/s
Energy = 500 J
i) For mass we know that
[tex]Force = mass \times \frac{velocity}{time}[/tex]
[tex]100 = mass \times \frac{10}{0.5}[/tex]
[tex]mass = 5 units[/tex]
ii) For length we know that
[tex]Force \times distance = energy/work[/tex]
[tex]100 (d) = 500[/tex]
[tex]Length = 5 units[/tex]
iii) for Time we know that
[tex]Power = \frac{Energy}{time}[/tex]
[tex]Force \times velocity = \frac{Energy}{time}[/tex]
[tex]time = \frac{500}{100\times 10}[/tex]
[tex]Time = 0.5 unit[/tex]
A 2000 kg car has a speed of 23 mph at the top of a hill which is 144 m tall. How
fast will the car be going if it coasts to the bottom of the hill?
Answers
Answer:
Final speed, v = 54.64 m/s.
Explanation:
Given that,
Mass of a car, m = 2000 kg
Initial speed of the car, u = 23 mph = 10.28 m/s
height, h = 144 m
We need to find the speed of the car at the bottom of the hill. Let v is the speed. Applying conservation of energy as :
[tex]\dfrac{1}{2}mu^2+mgh=\dfrac{1}{2}mv^2\\\\v^2-u^2=2ah[/tex]
a = g here
[tex]v=\sqrt{2gh+u^2}\\\\v=\sqrt{2\times 10\times 144+(10.28)^2}\\\\v=54.64\ m/s[/tex]
So, the speed at the bottom of the hill is 54.64 m/s.
Using the principle of conservation of energy, the car will be going approximately 53.7 m/s when it reaches the bottom of the hill.
Explanation:The question basically involves the principle of conservation of energy. You need to equate the total energy at the top of the hill to the total energy at the bottom. The total energy at the top is the sum of kinetic and potential energies. The kinetic energy is 0.5* m * v^2, where m = 2000 kg (mass) and v = 23 mph = 10.3 m/s (velocity). The potential energy is m * g * h, where g = 9.8 m/s^2 (gravity) and h = 144 m (height). The total energy at the bottom is kinetic energy (since potential energy is 0), which is 0.5 * m * u^2 where u is the final velocity. Equating the energies and solving for u, we get u = sqrt(2*g*h + v^2) =~ 53.7 m/s.
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If it takes 520 joules of work to move an object 10 meters, what force was needed? A. 51 N B. 510 N C. 530 N D. 52 N
Answers
Answer:
52
Explanation:
W = F x s
520 = F x 10
F = 520 ÷ 10
What is the magnitude of the electric field at a point 0.0050 m from a 0.0040
C charge?
Use E = kg and k = 9.00 x 10°N.m/c?
A. 1.4 x 1072 N
B. 2.8 1012 N
C. 1.1 x 1010 N
D. 7.2×10°N
Answers
Answer:
A. 1.4 * 10^(12) N/C
Explanation:
Parameters given:
Distance of charge from electric field, r = 0.0050 m
Charge, q = 0.0040 C
The electric field at a point, r, away from a charge, q, is given as:
E = (k * q) / r²
Where k = Coulomb's constant
E = (9 * 10^9 * 0.004) / (0.005²)
E = 1440 * 10^9 = 1.4 * 10^(12) N/C
The magnitude of the electric field at a point 0.005 m from the charge is 1.4 * 10^(12) N/C.
Answer:
Explanation:
Given that,
A charge Q = 0.004 C
We want to find the electric field at distance r = 0.005m
K = 9 × 10^9 Nm²/C²
Electric field at a point is given as
E = kQ / r²
E = 9 × 10^9 × 0.004 / 0.005²
E = 1.44 × 10¹² N/C
So, the magnitude of the electric field at 0.005m is 1.44 × 10¹² N/C.
A 5 cm object is 6 cm from a convex lens, which has a focal length of 7 cm. What is the distance of the image from the lens
Answers
Answer: -42 cm
Explanation: It explains after you answer
Answer:
Distance=: -42 cm
Height: 35 cm
Explanation:
Tells you on edg
Betty made a simple electromagnet using just a battery and a wire. What could Betty do to increase the strength of her
electromagnet?
Answers
Answer:
Coil the wire around a nail.
Explanation:
If Betty wants to increase the strength of the electromagnet, she should coil the wire around an object that conducts electricity. Plastic, paper, and glass do not conduct electricity, so Betty should coil the wire around a nail.
Answer:
Coil the wire around a nail.
Help ASAP, will give brainliest!!!
A student is helping his mom make sweet tea. She wants the tea to be very sweet and very strong. The student knows how to alter solutes so that they will dissolve better and faster.
Which of the following conditions would help make the sweet tea faster?
I. using sugar cubes with less surface area
II. using granulated sugar with greater surface area
III. using hot water
IV. using cold water
V. allowing to sit
V1. stirring vigorously
A. I, III, and VI
B. I, III, and V
C. II, III, and VI
D. I, IV, and V
Answers
Answer:
C
Explanation:
Greater surface area will allow the sugar to dissolve faster. Stirring and hot water will also help dissolve the sugar faster.
Answer:
D
Explanation:
stirring temperature small particle size
19. Find the recoil velocity of a 65 kg ice hockey goalie who
catches a 0.15 kg hockey puck slapped at him at a
velocity of 50 m/s. Assume that the goalie is at rest
before catching the puck, and friction between the ice
and the puck-goalie system is negligible.
a. -0.12 m/s
b. O m/s
C. 0.12 m/s
d. 7.5 m/s
Answers
Answer:
c. 0.12 m/s
Explanation:
by using momentum formula [tex]v_2=\frac{m_1\times v_1}{m_1+m_2}[/tex]
we get
[tex]v_2=\frac{0.15\times 50}{0.15+65}=0.12[/tex]
The recoils velocity of the puck-goalie system would be 0.12 meters/second, therefore the correct answer is option C.
What is momentum?It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.
As given in the problem we have to find the recoil velocity of a 65 kg ice hockey goalie who catches a 0.15 kg hockey puck slapped at him at a velocity of 50 m/s. Assume that the goalie is at rest before catching the puck, and friction between the ice and the puck-goalie system is negligible.
By using the conservation of the momentum,
The velocity of the recoil = 0.15*50 / (0.15+65)
=0.12 meters / second
Thus, the recoil velocity of a 65 kg ice hockey goalie would be 0.12 meters /second, therefore the correct answer is option C.
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A block is sitting on a platform 20 m high. It weighs 50 kg. How much potential energy does it contain?
Answers
Answer:
9806.65 Joules
Explanation:
The block sitting on a platform contains 9,800 Joules of potential energy.
Given the following data:
Height = 20 metersMass of block = 50 kgWe know that acceleration due to gravity (a) for an object is equal to 9.8 meter per seconds square.
To find how much potential energy the block contains:
Mathematically, potential energy (P.E) is calculated by using the following formula:
[tex]P.E = mgh[/tex]
Where:
m is the mass of object. g is the acceleration due to gravity. h is the height of an object.Substituting the given parameters into the formula, we have;
[tex]P.E = 50[/tex] × [tex]9.8[/tex] × [tex]20[/tex]
Potential energy = 9,800 Joules
Therefore, the block contains 9,800 Joules of potential energy.
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Ingrid hangs a black shirt on the clothesline to dry. After a few hours, she removes the black shirt from the clothesline and notices that it feels hot. What causes the black shirt to feel hot? How does molecular motion change when the black shirt gets hot?
EXPLAIN!!!
Answers
Answer:
The molecular motion starts to speed up when the black shirt becomes hot. because the light that absorbed from the black shirt gets converted to heat, and then absorbed by the shirt.
Explanation:
Calculate the mass in kg of an object that weighs 1,225 N on earth
Answers
= 1225 N/9.81 m/s^2
= 124.872579 kg
(rounded-off in 3 significant figures) = 125 kg
NOTE: I truly apologize if my answer is incorrect. I still hope this helped! :) (a brainliest would be much appreciated!)
To calculate the mass of an object that weighs 1,225 N on Earth, divide the weight by the acceleration due to gravity (9.80 m/s²). The mass is equal to 125 kg.
Explanation:To calculate the mass of an object that weighs 1,225 N on Earth, we can use the equation w = mg, where w is the weight, m is the mass, and g is the acceleration due to gravity (9.80 m/s² on Earth).
Rearranging the equation, we have m = w/g. Substituting the given values, m = 1,225 N / 9.80 m/s² = 125 kg.
Therefore, the mass of the object is 125 kg.
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can a magnet ever have a single pole
Answers
Answer:
no
In particle physics, a magnetic monopole is a hypothetical elementary particle that is an isolated magnet with only one magnetic pole (a north pole without a south pole or vice versa). A magnetic monopole would have a net "magnetic charge".
a person run 21.0 km west then runs 10.0 km east what is the persons distance
Answers
Answer:
31.0 km
Explanation:
21.0+10.0=31.0 km
Answer:
Distance from starting point = 11 km, Distance ran altogether = 31 km
Explanation:
21 - 10 = 11
21 + 10 = 31
hii i need answers for this question. this is due today and i need it asap!! **will give brainlist**
Answers
Answer:
Explanation:
the bit the most kinetic energy is where it is going down
the bit with the most potential is the curb
The places with the most potential are the places at the highest points of the track (i.e., right behind where the coaster is situated, and towards the end of the loop). These places have the highest stored energy, that can be used.
The places with the most kinetic is where the low points of the track is at. In this case, it will be where the coaster is situated, and the latter half of the loop.
Convection occurs when thermal energy is transferred by the movement of
Answers
Answer:
Convection is the transfer of thermal energy from one place to another by the movement of gas or liquid particles. How does this happen? As a gas or liquid is heated, the substance expands. This is because the particles in liquids and gases gain kinetic energy when they are heated and start to move faster.
Answer:
fluids
Explanation:
on edg 2021
What charges must the particles have to create the electric field shown
Answers
Correct Option:
X shows positive while Y shows negative charges, create the electric field as shown.
Option: D
Explanation:
The idea of an electric field provides a way to define how starlight travels to enter our eyes across huge distances of empty space.The electric field is a quantity of vectors that is present at any point in space. The electric field at a region shows the force that, if put at that position, will operate upon a positive charge device.
The direction of the electric field points directly at a positive point charge, and straight at a negative point charge. The field direction is implemented to the force direction exert on a positive test charge. It is externally from a positive charge and radially in toward a negative point charge.
which parts of an electric generator are connected
Answers
Answer:
https://brainly.com/question/10256321
Answer:
the armature and commutator
Explanation:
11. Which of the following forces is a contact force? *
A. Gravity
B. Friction
C. Magnetism
D. Electricity
Answers
Answer:
B
Explanation:
Gravity is an invisible force, and so is magnetism and electricity. Friction involves the rubbing of things together to create energy.
Answer:
B
Explanation:
Friction is the force that you feel whenever you try to drag an object across a surface. Like a box along the floor, or your hand across a counter-top. It requires two objects to be in direct contact with each other (don't worry about air friction AKA "drag").
True or False? When vinegar is added to baking soda, the temperature decreases slightly. This is a sign that there was a chemical reaction.
Group of answer choices
True
False
Answers
Answer:
true
Explanation:
Answer:
this would be be true but of the ingredients in it.
why do substances with free electrons make the best conductors.
Answers
Answer:
when electrons move around they create heat. the freer the molecules the more hear they can produce