A thin wire of length (2 m) and (1 mm2 ) cross-section area is clamped horizontally between two walls, a weight of (10 kg) is hung at the middle of the wire depressed it (2 cm). Find young's modulus?
Answer:
Young modulus = 9.8 × 10⁹ N/m²
Explanation:
From the information given:
Stress = F/A
Stress = (10 × 9.8) / 0.001²
Stress = 9.8× 10⁷ N/m²
Strain = increase in length / initial length of wire
Strain = 0.02/ 2
Strain = 0.01
Now;
The Young modulus (Y)= stress/strain
Young modulus = (9.8 × 10⁷ N/m²) / 0.01
Young modulus = 9.8 × 10⁹ N/m²
4Osteoporosis is a disorder that can be caused by not consuming enough calcium. What can you infer about osteoporosis
Answer:
It affects the bones
Explanation:
Many inorganic elements are very useful in the body. Many of them carry out diverse important functions and play key roles in parts of the body.
Calcium is essential for strong bones. Hence, any disorder that results from not consuming enough calcium must be connected to the bone.
Therefore, osteoporosis affects the bone.
One day on her walk home from school, Leann noticed some rust on an old car Leann knows that when iron and oxygen chemically react, they can
form rust She remembered that models can be used to summarize what happens in a chemical reaction. She decides to create a model of this
chemical reaction What is the name that describes the iron and oxygen found on the left side of Leann's model?
4 Fe + 302 -
• 2Fezos
A products
reactants
C. Scientific notation
D.Synthesis
Answer:
reactants
Explanation:
The reaction model is given as shown below:
4Fe + 3O₂ → 2Fe₂O₃
The name that describes the iron and oxygen found on the left hand side of Leann's model is reactants.
Reactants in a chemical expression are the species that are combining together to give a product.
Some reactions only have one reactant and such a chemical process is often termed decomposition reaction.
The two moles of Fe₂O₃ is the product of the reaction.
What is the mechanical advantage of the screw shown below? O A. 14.1 O B. 2 O C. 12.6 O D. 8.2.
Answer: C. 12.6
Explanation: 2*pi*1.8= 11.304
11.304/0.9= 12.56
I need help answering these questions! Please!
Answer:c
Explanation:
Also are u taking a benchmark or cfa
name three types of forces observed in the movie sharkboy and lavagirl
Answer: I think it would be lava, water and air
Explanation: I’m not so sure
Answer:
fire , water , land
Explanation:
i'm guessing i don't know what kind of forces we're talking about here :)
add me as a friend , ill add back so we can be friends !! <3
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Please I badly need help!!
Answer:
i can not see the picture
Explanation:
An object is moving to the west at a constant speed. Three forces are exerted on the object. One force is 10 N directed due North, and another is 10N directed due West. What is the magnitude and direction of the third force if the object is to continue moving West at a constant speed?
Answer:
10 N south
Explanation:
It cancels out the north allowing the object to keep going west :)
i think this might be wrong so like don't trust me-
A storm cloud has a charge of 0.055 C. Due to polarization, the top of a tree gains a charge of -0.006 C. The cloud moves to 98 meters above the tree. Find the amount of force between the cloud and the tree rounded to two decimal places.
Answer:
F = 309.24 N
Explanation:
Given that,
Charge on a strom cloud, q₁ = 0.055 C
The charge gained by the top of a tree, q₂ = -0.006 C
The cloud moves to 98 meters above the tree.
We need to find the amount of force between the cloud and the tree. The electrical force between two charges is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}\\\\F=\dfrac{9\times 10^9\times 0.055\times 0.006 }{(98)^2}\\\\F=309.24\ N[/tex]
So, the force between the cloud and the tree is equal to 309.24 N.
help, please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
D
Explanation:
Why does a magnet get demagnetized when hammered?
Answer:
Answer is on the pic
Explanation:
I hope it's helpful!
Jimothy is riding his bike to his friend's house. He decides to see how fast he can go, and starts pedaling as hard as he can. He began with an initial velocity of 2.5 m/s. He pedals with an acceleration of 1.5 m/s^2 for a time of 6 seconds. Calculate his final velocity.
Answer:
Final velocity, V = 11.5m/s
Explanation:
Given the following data;
Initial velocity, U = 2.5m/s
Acceleration, a = 1.5m/s²
Time, t = 6secs
To find the final velocity, we would use the first equation of motion
V = U + at
Substituting into the equation, we have
V = 2.5 + 1.5*6
V = 2.5 + 9
Final velocity, V = 11.5m/s
PLEASE HELP ITS DUE TODAY
What evidence have you discovered to explain how the shape of a wave changes as the source of the wave changes?
Answer:
Many forms of energy are carried in heat, light, sound, and water waves. Energy is defined as the ability to do work; all forms of energy can be transformed into work. ... Ocean waves offer a very large source of renewable energy. ... 4.18 A). When deep-water waves move into shallow water, they change into breaking waves
Explanation:
search
Someone pushes on a rock and measures the net force acting on it is 147 N and acceleration to be 7.5m/s2.What is the weight of the rock?
A person pushed on the petal of a bike and causes it to move to the left. The applied force was 85 N left and the force of friction was 12 N right. Find the net force
Answer:
The net force is 73 N to the left
Explanation:
The net force f = applied force, F + frictional force, f'
f = F - f'
If we take right as positive,
F = -85 N (since it is to the left) and f' = +12 N (since it is to the right)
So, f = F + f'
f = -85 N + 12 N
f = -73 N
So, the net force is 73 N to the left
differentiate can you help me plzzzzzzz
Explanation:
Acceleration and the other term are the same physical phenomenon - just with opposite affects. Acceleration increases velocity, while the other term that begins with the letter "R" reduces.
***(Brainly's language filter is blocking the use of the second term in my answer.)***
Acceleration is defined as the rate of change of the velocity of an object per unit of time...
[tex]a = \frac{dv}{dt}[/tex]
Acceleration would be a POSITIVE (+) quantity, while the r-word would be negative (-).
The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.28. The weight of the object is 30N. What is the force of friction?
Answer:
30 x 0.28 = 3.78 is your answer
Explanation:
the question is asking for the weight of the object so you multiply and get 3.79
In a much smaller model of the Gizmo apparatus, a 5 kg mass drops 86 mm (0.086 m) and raises the temperature of 1 gram of water 1°C. How much energy was transferred to the water? (Use a value of 9.8 m/s2 for g.)
Answer:
The amount of energy transferred to the water is E = 4.214 [J]
Explanation:
The energy that was transferred to the water was originally found as potential energy, when the mass falls the distance of 86 mm, this energy is converted to kinetic energy and at the moment of falling into the water it is converted from kinetic energy to thermal.
[tex]E_{pot}=E_{kin}\\E_{pot}=m*g*h[/tex]
where:
m = mass = 5 [kg]
g = gravity = 9.8 [m/s²]
h = elevation = 86 [mm] = 0.086 [m]
[tex]E_{pot}=5*9.8*0.086\\E_{pot}=4.214[J][/tex]
uan created a chart to help him study for a test.
A 2-column table. The first column labeled X has entries some light is reflected, some light is absorbed, no light passes through. The second column labeled Y has entries some light is reflected, some light is absorbed, some light is reflected, most light passes through.
Which headings best complete the chart?
X: Transparent Objects
Y: Opaque Objects
X: Opaque Objects
Y: Transparent Objects
X: High Frequency Waves
Y: Low Frequency Waves
X: Low Frequency Waves
Y: High Frequency Waves
Answer:
Y: transparent objects i think
Answer:
The answer is B: X: Opaque Objects ; Y: Transparent Objects
Explanation:
The X column describes that the light that shines on that object is reflective, slightly absorptive, and no light passes through it. This describes opaque objects. Opaque objects are mostly made up of solids, such as rocks and apples.
The Y column describes that the light that shines on it is sometimes refracted, sometimes absorbed, and sometimes reflected, but the light almost always passes through it. This describes transparent objects. Transparent objects are mostly clear, so you can see through them, such as glass vases and windows.
Which of the following combinations makes up an ionic compound?
A. A positive anion and a positive anion
B. A positive anion and a negative cation
O C. A positive cation and a negative cation
D. A positive cation and a negative anion
Answer:
D. A positive cation and a negative anion
Explanation:
An ionic compound is defined as the chemical compound formed by the combination of two charged particles or ions held together by electrostatic forces.
An ionic compound is made up of ions, a cation which is a positively charged ion and an anion which is a negatively charged ion. Example of ionic compounds are Lithium Fluoride, Lithium Iodide, and Sodium Bromide.
Hence, the correct answer is "D. A positive cation and a negative anion".
What is the answer of this crossword. Non-renewable resources found deep in the ground. 1 ____ 2____ 3____ 4 E 5____ 6____ 7____ 8 S
Answer:
Crude oils
Explanation:
The correct word should be crude oils.
Crude oil is a non-renewable resource that is geologically formed and found deep in the ground. It is a naturally occurring mixture of hydrocarbons and usually fractionated to serve different purposes for the use of man. Crude oils are non-renewable because the rate at which humans exploit them is quite faster than the rate at which they are being naturally replenished deep in the ground.
Light waves can travel in vacuum.
But sound waves can not travel in
vacuum. Why?
there are no molecules in it to vibrate
What is the velocity of an object that has been in free fall for 2.5 s?
A. -3.9 m/s downward
B. 3.9 m/s downward
C. 250 m/s downward
O
D. 25 m/s downward
Answer: D. 25 m/s Downward
Explanation:
V = (g)(t)
V = (9.8 m/s²)(2.5)
V = 24.5 m/s
If a force of 10 N stretches a spring 0.5 m, what is the spring constant?
Answer:
the spring would be a constant of 10.5 m
Calculate the speed for a car that went a distance of 125 miles in
2 hours time? Provide the speed in kilometer per hour
Two carts with masses of 14.7 kg and 3.2 kg
move in opposite directions on a frictionless
horizontal track with speeds of 6.7 m/s and
3.1 m/s, respectively. The carts stick together
after colliding head-on.
Find their final speed.
Answer:
Speed, V = 4.95m/s
Explanation:
Given the following data;
Mass, M1 = 14.7kg
Mass, M2 = 3.2kg
Velocity, V1 = 6.7m/s
Velocity, V2 = 3.1m/s
To find the final speed;
Mathematically, inelastic collision is given by the formula;
[tex] V = \frac{(M_{1}V_{1}+M_{2}V_{2})}{(M_{1}+M_{2})}[/tex]
Where;
V is the final velocity in m/s.
M1 is the mass of the first object in kgs.
M2 is the mass of the second object in kgs.
V1 is the initial velocity of the first object in m/s.
V2 is the initial velocity of the second object in m/s.
Substituting into the equation, we have;
[tex] V = \frac{(14.7*6.7) - (3.2*3.1)}{14.7 + 3.2}[/tex]
[tex] V = \frac{98.49 - 9.92}{17.9}[/tex]
[tex] V = \frac{88.57}{17.9}[/tex]
Speed, V = 4.95m/s
A toy boat moves horizontally in a pond. The horizontal position of the boat in meters over time is shown below. What is the displacement of the boat between 0s and 16s? What is the distance traveled by the boat between 0s and 16s?
Answer:
displacement=-21
distance=39
Explanation:
how does density affect the pressure of a liquid?
Anyone plz answer
Answer:
As the density of the liquid increases, so does the pressure. If the liquid is open to the air, there will also be atmospheric pressure on its surface.
Explanation:
HELP PLZ ASAP!!!!!
Which of the following steps does not take place during cellular respiration?
a
Glucose is broken down.
b
Energy is transferred to cells.
c
Oxygen combines with carbon dioxide.
d
Energy and other products are released.
Answer:
C. Oxygen combines with carbon dioxide
Explanation:
B i o l o g y
Also, oxygen is a reactant and carbon dioxide is a product of cellular respiration that does not combine during this process
Hope it helps
Match the term to its description.
Elliptical galaxy
Galaxy
Lens galaxy
Spiral galaxy
Answer choices:
Forms a perfect sphere or an ellipse and is flattened to some degree.
Is a collection of several billion stars and interstellar matter isolated in space.
Has a large flattened core.
Has a central core from which curved arms spiral outward.
Answer with Explanation:
Elliptical galaxy = Forms a perfect sphere or an ellipse and is flattened to some degree.
The context clue here is the word "ellipse." The elliptical galaxy follows the elliptical shape. It is considered as the most abundant type of galaxy.Galaxy = Is a collection of several billion stars and interstellar matter isolated in space.
A galaxy is made up of billions of stars, and these stars are drawn together by gravitational force.Lens galaxy = Has a large flattened core.
A lens galaxy has a large flattened core, similar to the shape of a lens.Spiral galaxy = Has a central core from which curved arms spiral outward.
The context clue here is the word "spiral outward." The swirling arms is a common characteristic of spiral galaxies.
Answer:
Elliptical galaxy – Forms a perfect sphere or an ellipse and is flattened to some degree.
Galaxy – Is a collection of several billion stars and interstellar matter isolated in space.
Lens galaxy – Has a large flattened core.
Spiral galaxy – Has a central core from which curved arms spiral outward.
