Answer:
b) Expansion
Explanation:
In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.
Generally, matter exists in three (3) distinct or classical phases and these are; solid, liquid and gas.
A physical change can be defined as a type of change that involves an increase or decrease in the volume of a physical object (object). Also, this change can be reversed to the original state under certain conditions.
The increase in volume of matter that occurs when matter is heated causes an expansion.
This ultimately implies that, when a physical object (matter) is heated for a specific period of time, it result in an increase in the volume of the object; this phenomenon is generally referred to as expansion.
On the other hand, a decrease in volume of a physical object (matter) as a result of heat is known as contraction.
Prove that potential energy is equal to kinetic energy
Which factor increases as a result of increasing altitude?
Explain what cardiovascular exercise is in your own words. Explain the benefits of it and how it is different than muscular strength. Give 3 examples of cardiovascular exercises/activities
I NEED THIS TURNED IN ASAP I WILL MARK YOU THE BRAINLIEST NO LINKS
Draw a force diagram on the object in the image. Identify 4 forces acting on the object, draw an arrow to represent their strength and direction. Label each arrow with the type of force.
Answer:
^
| buoyancy force
|
<----drag \_____________/ -----------> thrust
| weight
v
Explanation:
those are the forces and I tried to draw the arrows best I could with size too
What is one problem that you think needs to be solved so that your future is safer for your children?
Answer:
Systemic racism
Explanation:
In a nuclear power plant, uranium atoms ______
A. Combine and give off heat energy
B. Split and give of heat energy
C. Burn and give of heat energy
D. Split and give off electrons
Answer:
All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits.
How do I solve this problems
A fiber-optic rod consists of a central strand of material surrounded by an outer coating. the interior portion of the rod has an index of refraction of 1.55. if all rays striking the interior walls of the rod with incident angles greater than 59.5° are subject to total internal reflection, what is the index of refraction of the coating?
Answer:
the index of refraction of the coating is 1.33
Explanation:
Given the data in the question;
refraction index of interior portion of the rod η[tex]_{interior[/tex] = 1.55
angle of incidence θ[tex]_i[/tex] = 59.5°
From Snell's law, we know that;
η[tex]_{interior[/tex] × sinθ[tex]_i[/tex] = η[tex]_{coating[/tex] × sinθ[tex]_r[/tex]
where η[tex]_{interior[/tex] is the index of refraction of the rod ( material 1 )
θ[tex]_i[/tex] is the angle of incidence
η[tex]_{coating[/tex] is the index of refraction in outer coating ( material 2 )
θ[tex]_r[/tex] is the angle of refraction
so we substitute our values into the equation;
η[tex]_{interior[/tex] × sinθ[tex]_i[/tex] = η[tex]_{coating[/tex] × sinθ[tex]_r[/tex]
1.55 × sin( 59.5° ) = η[tex]_{coating[/tex] × sin( 90° )
1.55 × 0.861629 = η[tex]_{coating[/tex] × 1
1.3355 = η[tex]_{coating[/tex] × 1
η[tex]_{coating[/tex] = 1.33 { 2 decimal places }
Therefore, the index of refraction of the coating is 1.33
Where, When, What occured in Australian Wildfires?
1. Where?
2. When?
3. What ?
On 11 November a fire started in the Ravensbourne area near Toowoomba, which burnt through over 20,000 hectares (49,000 acres) of bush across several days, destroying six houses.
A vector is 14.4 m long and
points in a 133 degree
direction.
Find the x-component of the
vector.
X-component (m)
Answer:
Explanation:
The x-component is found in the magnitude of the vector times the cosine of the angle.
[tex]A_x=14.4cos133[/tex] and, to 3 sig dig,
[tex]A_x=-9.82m[/tex]
PLEASE HELP ASAP
The electrical force between two objects is 36 N. If the charge on one of the objects is cut in half, the
force between them will be
a. 4N
b. 9N
C. 12 N
d. 18 N
Answer:
The force will be cut in half also so the new force will be 18 N (d).
What is the mean distance between the Sun and the core of
the Milky Way?
Answer:
about 8 kpc
Explanation:
Light is created by the motion of charged particles.
O True
O False
Answer:
true
Explanation:
The edge effect in habitats are caused by:
A. habitat fragmentation
B. biological magnification
C. eutrophication
D. destruction of habitat
The edge effect in habitats is caused by habitat fragmentation. Therefore, option A is correct.
Habitat fragmentation refers to the process by which large, continuous habitats are divided into smaller, isolated fragments due to human activities or natural events. It occurs when natural landscapes are altered or disrupted. It results in the fragmentation of once-continuous habitats into smaller patches.
This fragmentation can happen through various means, such as the construction of roads, urban development, agriculture, deforestation, or natural events like wildfires or floods.
Learn more about habitat fragmentation, here:
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A hair dryer uses 1100 W of power
when connected to a 110 V outlet.
What is the resistance of the hair
dryer?
Answer:10
Explanation:acellus
Tom and his twin brother Tim have a combined mass of 200.0 kg and are
zooming along in a 100.0-kg amusement park bumper car at 10.0 mls.
They bump Melinda's 100.0 kg car, which is sitting still. After the
collision, the twins continue ahead with a speed of 4.12 m/s. If Melinda
has a mass of 25.0 kg, How fast is Melinda's car traveling after it is
bumped across the floor?
Answer:
I don't know really I wish I could help
verdadero o falso de La energía interna es la energía térmica asociada al objeto en virtud del movimiento de sus moléculas.
Necesito ayuda, porfa.
Answer:
Es la energía cinética interna total de un objeto debido al movimiento aleatorio de sus ... a es la energía que posee un objeto o cuerpo en virtud del movimiento de sus ... Si el movimiento de estas moléculas y átomos es más rápido, se dice que el ... Por lo tanto, la energía térmica asociada con la conducción resulta de la .
Explanation:
Two parallel plates of area 7.34 x 10^-4 m^2 have 5.83 x 10^-8 C of charge placed on them. A 6.62 x 10^-6 C charge q1 is placed between the plates. What is the magnitude of the electric force on q1? Hint: How is force related to the field? (Unit = N)
Answer:
* if the two plates have the same charge sign F_net = 0
*if one plate is positive and the other is negative F_net = 59.4 N
Explanation:
The electric field created by a parallel plate is
E = [tex]\frac { \sigma }{2 \epsilon_o }[/tex]
where sigma is the charge density
σ = Q / A
we substitute
E = [tex]\frac{Q}{A \ 2 \epsilon_o }[/tex]
E = [tex]\frac{ 5.83 \ 10^{-8} }{7.34 \ 10^{-4}\ 2 \ 8.5 \ 10^{-12} }[/tex]
E = 4.487 10⁶ N / C
the electric force is
F = E / q
in this force it is a vector, so if the charges are of the same sign they repel and if they are of the opposite sign they attract. In this case, the test load is between the two plates that have the same load sign, so the forces are in the opposite direction.
* if the two plates have the same charge sign
F_net = F₁ - F₂
F_net = q (E₁ -E₂)
since the electric field does not depend on the distance
E₁ = E₂
in consecuense
F_net = 0
In a more interesting case
*if one plate is positive and the other is negative
F_net = F₁ + F₂
F_net = q (E₁ + E₂) = 2 q E₁
F_net = 2 6.62 10⁻⁶ 4.487 10⁶
F_net = 59.4 N
net force goes from positive to negative plate
Answer:
59.4 N
Explanation:
acellus
Find the current between each resistor
Answer:
current thought each resideror can be found using ohm's law L=V/R where the voltage is constant across each resistor.i hope it is helpful...
If two proton approach each other with speed of 400m\s and 450m\s respectively what is the total momentum of the two particle system
Answer: [tex]83.65\times 10^{-27}\ kg.m/s[/tex]
Explanation:
Given
The velocities of the protons are 400 m/s and 450 m/s
Mass of the Proton is [tex]m=1.673\times 10^{-27}\ kg[/tex]
Since they travel in the opposite direction, therefore, their momentum cancels out each other.
Momentum is the product of mass and velocity
[tex]\therefore m(450-400)\\\Rightarrow 1.673\times 10^{-27}\times 50\\\Rightarrow 83.65\times 10^{-27}\ kg.m/s[/tex]
The direction of momentum is in the direction of proton having 450 m/s velocity.
Friction always acts
in the same direction as motion.
in the opposite direction as motion.
at a 30 degree angle to the direction of motion.
perpendicular to the direction of motion.
Explanation:
friction always acts in the opposite direction as motion.
stay safe healthy and happy...a 20 A fuse is connected in series with a circuit containing a 240 V source. What is the minimum resistance required to prevent the fuse from melting
Answer:
12 ohms
Explanation:
you just divide 240 and 20
240 V/ 20 A = 12 ohms
two charges create 8.00 N of electric force on each other. if you increase their distance to twice its original value, how much electric force do they exert on each other
Answer:
2.00 (right on acellus)
Explanation:
doubling the distance between two charges makes F (8.00) quarter, so you would just do 8.00*1/4
how is the modern day periodic table arranged group experiencing Oppression/loss of fredom?
I NEED THIS DONE ASAP I WILL MARK YOU THE BRAINLIEST BUT NO LINKS
Put the correct terms with the correct pictures
Answer:
1. Static Friction
2. Sliding friction
3. Fluid friction
4. is rolling friction
Sorry if i am wrong
Explanation:
What creates a magnetic field?
A. moving electric charges
B. charged particles at rest
C. moving magnets
Answer:
moving electric charges
Write three things you already know about golf, three things you want to know, and three things you learned
Answer:
What I know, want to know, and have learned
Explanation:
I know
1. You have to have a golf ball
2. You have to have a golf club
3. Its nice to have a golf cart
Want to know:
1. Where can I play
2. How to play
3. Is it a common sport
Have learned:
1. Golf is hard
2. Top golf is a nice place to golf
3. The goal is to make the ball into the hole
A 12 kg
mass is lifted to a height of 2 m. What is its potential energy
at this position?
Answer:
Explanation:
Potential energy is the energy stored within an object, due to the object's position, arrangement or state
Answer:
240joules
Explanation:
P:E = MGH
mass 12kg
g is constant as 10m/s²
h is 2m
therefore, 12*10*2 =240joules
yo help please i’ll give u a brainliest
An event in when a large percentage of all species become extinct is calle
A. biodiversity shift
B. evolutionary shift
C. mass extinction
D. background extinction