Answer:
1.0
Explanation:
The smallest possible value for the index of refraction is 1.0.
What is Index of refraction?This talks about how fast light travels through an object by taking note of how much the light is bent, or refracted, as it enters into the material.
The smallest possible value for the index of refraction is 1.0 because the speed of light in any medium is always less than than the speed of light in air or vacuum.
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constraints for the sub-problem for pollution
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Pendulum mass is 4 kg. Use your equations for gravitational potential energy and kinetic energy to determine these values based on the data given below. Total energy is the sum of gravitational potential energy and kinetic energy. In this problem, round gravity to: g = 10 m/s2.
its should be 2.0 and 4.5 on it
object Travels 24 M with a speed of 4 metre per second and then another 32 with a speed of 8 metre per second the average speed of the object is
(a)6m/s (b)4m/s (c)5.6m/s (d)6.5m/s
Answer:
Total distance covered S=16+16=32 m
Total time t=4+2=6 s
Average speed V
avg
=
t
S
=
6
32
=5.33 m/s
which type of forces would be experienced by a sled that is being pulled by a rope (choose 4)
I WILL CROWN THE BRAINLIEST IF YOU ANSWER CORRECT
ELECTROMAGNET WAVES
Travel through what?
Carry energy, often called what?
Emitted by what?
Three Examples of electromagnetic waves.
Answer:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
Example: Radio waves, microwaves, visible light, and x rays
15. A boy on board a cruise ship drops a 30.0 gram marble into the ocean. If the resistive force proportionality
constant is 0.50 kg/s, what is the terminal speed of the marble in m/s?
a. 0.06
b. 0.294
c.0.588
d. 60.0
e. 588.0
identify the types of elements in the schematic diagram give the number of each types
Where's the diagaram?
Help me please! I really need it!
Answer:
5 Hz
Explanation:
count the number of cycles per 1 second
What does it mean when an
electromagnetic wave has low energy?
A. it has a long wavelength
B. It has a short wavelength
C.it has a short amplitude
D. It has a high frequency
Answer:
A
Explanation:
Low energy photons (such as radio photons) behave more like waves, while higher energy photons (such as X-rays) behave more like particles.
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B. It has a short amplitude.
:)
1. How is power defined? *
A. the quantity of work accomplished
B. the direction of the force applied to an object
C. the total distance an object is moved
D. the rate at which work is accomplished
Answer:
D. the rate at which work is accomplished
4. A desk with a mass of 10 kg is pushed across a floor with an acceleration of 4 m/s?. What
is the force on the desk? Use the equation F = ma.
Answer:
Below
Explanation:
All we need to do for this question is to plug in our values and solve!
Force = mass x acceleration
Force = 10 kg x 4 m/s^2
Force = 40 Newtons or 40 N
If your teacher requires you to round to sig figs it would be :
F = 4 x 10^1 N
Hope this helps!
A golf ball is launched horizontally at a speed of 11 meters per second and a high of 6.4 m above the ground. How long will it take for the golf ball to reach the ground?
The answer is A.
t = ( 2h / g )^1/2 = ( 2 x 6.4 / 9.8 )^1/2 = 1.14s
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A box of mass 4kg is being pulled along a rough surface to the right, as shown below. When F=8N, the box accelerates to the right 1m/s^2. If F is doubled to 16N, the acceleration of the box across the same rough surface will be:
A) 1m/s^2
B) 2 m/s^2
C) 3 m/s^2
D) 4 m/s^2
E) 0.5 m/s^2
Hi there!
Recall that:
∑F = ma
In the given situation, there is acceleration occurring in the horizontal direction, so there is a net force.
∑F = Fa (Force applied) - Fκ (Force due to kinetic friction)
We can plug in given values to solve for the frictional force:
ma = Fa - Fκ
(4)(1) = 8 - Fκ
4 = 8 - Fk
Fκ= 4N (negative since working opposite to acceleration)
Now, solve given the new force:
4a = 16 - 4
4a = 12
a = 3 m/s², Answer C.
what do all forms of electromagnetic radiation have in common?
Answer:
All electromagnetic waves have two wavefronts, which are an oscillating electric field and an oscillating magnetic field.
Explanation:
three energy changes that result in movements accuring in your body as sit down reading book?
how would a rock respond to stresses applied at depth?
The rock will compress as the stress applied increases with depth and it will break when it cannot withstand the stress.
The pressure or stress on the rock is defined as force per unit area of the rock which equally increases with depth. This can be expressed as follows;
[tex]P= \frac{F}{A}\\\\P = \rho gh[/tex]
where;
P is the pressure applied to the blockA is the area of the rock h is the depth in which the rock is subjected to g is acceleration due to gravityThus, we can conclude that the stress on the rock will increase with increase in depth. The rock will compress as the stress applied increases with depth and it will break when it cannot withstand the stress.
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how does the interstellar medium affect our view of most of the galaxy?
Answer: It prevents us from seeing most of the galactic disk with visible and ultraviolet light.
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Ok, so the runner then goes from 20m to 11m. Distance? Displacement?
Answer:
honestly a bit confused by the question, but this would be a 9 meter difference in the distance, moving from 20m to 11m
Explanation:
the force that attracts objects towards another object.
Answer:
Gravity Force
Gravity Force(also known as Weight) The force of gravity is the force with which the earth, moon, or other massively large object attracts another object towards itself. By definition, this is the weight of the object your welcome
separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.
Answer:
The answers anaphase. anaphase is the fourth phase of mitosis
why does chelsea see sparks as she removes her clothes from the clothes dryer? conduction. induction. static discharge. loss of protons.
This is electrostatic phenomenon. Chelsea see sparks as she removes her clothes from the clothes dryer because of static discharge.
What is Static Electricity ?Static electricity is produced by friction when two materials are rubbed together.
Why does Chelsea see sparks as she removes her clothes from the clothes dryer?
The correct answer is because of static discharge.
For instance, when a glass rod is rubbed with silk or cellulose acetate with silk, the glass will become positively charged by loosing electron to the silk whereby becoming negatively charged.
Static discharge occurs during thunder and lightning, and when combing our hair during harmattan season.
Therefore, Chelsea see sparks as she removes her clothes from the clothes dryer because of static discharge.
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Answer:
C) Static Discharge
Explanation:
which type of star has the least amount of pressure in its atmosphere?
Answer:
red dwarfs
Explanation:
they are very low mass stars, as a result they have relatively low pressures
In star wars, john williams used the __________ concept of romantic opera in which a character is assigned a short melody. so, famous characters like darth vader, princess leia, and han solo all have their own melody.
In Star Wars, John Williams used the Leitmotif concept of romantic opera in which a character is assigned a short melody.
It is used for famous characters like Darth Vader, Princess Leia, and Han Solo all have their melody.
Leitmotif is generally described as a recurring theme shown or appears over musical or literary composition.
Leitmotif is more common in operas and symphonic poems. It is attributed to a specific person, idea, or situation.
Hence, in this case, it is concluded that in the movie Star Wars, John Williams used the Leitmotif concept of romantic opera.
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a car in tally at rest pics up and velocity of 72 km/h ^−1over a distance of 25m the acceleration of car is
Answer:
16 m/s^2
You find out the time first which is 1.25s
Which of the following is not a property of Newton’s Second Law?
a. The acceleration of the object is directly proportional to
the force acting on the object
b. The acceleration of the object is inversely proportional to
the mass of the object
c. The object moves in the same direction as the force acting
on the object.
d. There is no relationship between acceleration to force or
mass.
Answer:
La aceleración
del objeto
es directamente proporcional a la fuerza que actúa sobre el objeto
Explanation:
How does a balanced chemical equation demonstrate the Law of Conservation of Mass?
Answer:
It shows the same number of atoms of each element on both sides of the equation
A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow.
Explanation:
Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions.
A balanced chemical equation shows that total number of atoms before reaction is equal to total number of atoms after the reaction. As, the total mass of any object lies on its atom, a balanced chemical equation demonstrate the Law of Conservation of Mass.
What is Dalton's atomic theory?The Dalton's atomic theory is as follows:
Atoms are the incredibly minuscule building blocks of all stuff.A given element's atoms are all the same size, mass, and other characteristics. Distinct elements' atoms have different mass, size, and other characteristics.Atoms can never be divided, produced, or eliminated.Chemical compounds can be created by combining atoms of various elements in straightforward whole number ratios.Atoms can be joined together, split apart, or altered during chemical processes.The total number of atoms before and after a reaction are equal, according to a chemical equation that is in balance. A balanced chemical equation illustrates the Law of Conservation of Mass since every object's atom holds the entirety of its mass.
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Why did explorers want to find a way accross the North American continent
Answer:
The Desire for New Trade Routes
Extra:
European explorers found the New World by mistake; they were not looking to find new continents but new sea routes. Europeans mainly wanted to find better trade routes to China, India, and Southeast Asia.
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Using Newton’s first law of physics, which explains why it is harder to swim in water with a current (like the ocean) than in contained water (like a pool)?
A.
Perpetual motion can only be interrupted by an unbalanced force.
B.
The current will interfere with perpetual motion more than still water.
C.
It takes much more strength to swim if there is a current than in a pool.
D.
Still water is an immovable object, but currents have their own momentum.
Answer:
It isn't A.
Explanation:
I got it wrong with the answer A.
it is harder to swim in water with a current (like the ocean) than in contained water (like a pool) because Still water is an immovable object, but currents have their own momentum. The correct option is D.
What is Newton's first law of motion?Newton's first law of motion, also known as the law of inertia, states that "an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity unless acted upon by an unbalanced force."
This means that an object will continue to move in a straight line at a constant speed unless an unbalanced force acts upon it. In addition, if an object is at rest, it will remain at rest unless acted upon by an unbalanced force.
The law of inertia can be applied to many situations. For example, if a book is sitting on a table, it will remain at rest until a force is applied to it. Similarly, if a ball is rolling on a flat surface, it will continue to roll at a constant speed in a straight line unless a force, such as friction, slows it down or changes its direction.
This law is fundamental to understanding the behavior of objects in motion, and it forms the basis for the other two laws of motion formulated by Sir Isaac Newton.
Here in the Question,
Swimming in a pool versus swimming in the ocean, the difference lies in the presence of a current in the ocean.
The current in the ocean has its own momentum, and when a swimmer enters the water, they are faced with an additional force that they must overcome to move forward. This means that the swimmer must apply more force and use more energy to overcome the force of the current and move forward in the water.
In still water, on the other hand, there is no external force acting on the swimmer, so they only have to overcome the resistance of the water itself to move forward.
Therefore, The correct answer is D i.e Still water is an immovable object, but currents have their own momentum.
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Henry is at the state fair. At one booth he throws a 0.70 kg ball forward with a velocity of 22.0 m/s in order to hit a 0.15 kg bottle sitting on a shelf. When the ball makes contact the bottle goes flying forward at 29.0 m/s. What is the velocity of the ball after it hits the bottle?
The velocity of the ball after it hits the bottle is 15.8 m/s
Let m₁ represent the mass of the ball, m₂ the mass of the bottle, u₁ the velocity of ball before impact, u₂ the velocity of bottle before impact, v₁ the velocity of ball after impact and v₂ the velocity of bottle after impact.
Given that:
m₁ = 0.7 kg, m₂ = 0.15 kg, u₁ = 22 m/s, u₂ = 0, v₂ = 29
momentum before impact = momentum after impact, hence:
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
0.7(22) + 0.15(0) = 0.7v₁ + 0.15(29)
0.7v₁ = 11.05
v₁ = 15.8 m/s
Therefore the velocity of the ball after it hits the bottle is 15.8 m/s
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how many atoms are in the moon??
The number of atoms on the moon is 1.33× 10¹⁵ atom.
What is an atom?The atom consists of matter that may be split without releasing electrical charges.
It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.
In the nucleus proton and the neutron is exists. The condition of the atom to be electrically neutral is that the number of the proton and electron should be the same.
The response is 1.33× 10¹⁵ atom. According to the Jefferson Lab of the US Department of Energy.
This answer is derived from an assessment of the number of atoms present in each of the Earth's constituent elements, such as silicon, iron, magnesium, sulfur, and silicon.
Hence the number of atoms on the moon is 1.33× 10¹⁵ atom.
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