Physics High School

help m-e-e people -_-!​

Help M-e-e People -_-!

Answers

Answer 1

Answer:

the answer is

Explanation:For equilibrium

Weight = Tension

mg=T

∴T=4×3.1π=12.4πN (as can be inferred from the question)

Y=

△l/l

T/A

​

=

1000

0.031

​

/20

12.4π/π(

1000

2

​

)

2

​

=

4×0.031

12.4×20×1000×(1000)

2

​

=2×10

12

N/m

2

Related Questions

Does anyone know the answer to that

Answers

Its A. Electric Field

What is the wavelength of a periodic wave that has a frequency of 5.0 Hz and
a speed of 10 m/s?

Answers

Answer:

26

Explanation:

meters per second has a wavelength of 26.

A student is performing an experiment comparing sound and light waves. The student gathers the following data. A 3 column table with 3 rows labeled Speed of Sound. The first column is labeled medium with entries ice, water, steam. The second column is labeled temperature in degrees Celcius with entries 0, 25, 100. The last column is labeled speed of sound in meters per second with entries 3200, 1500, 346. A second 3 column table with 3 rows labeled speed of light. The first column is labeled medium with entries air, water, glass. The second column is labeled index of refraction with entries 1. 00, 1. 33, 1. 57. The last column is labeled speed of light in meters per second with entries 2. 99 times 10 Superscript 8 Baseline, 2. 26 times 10 Superscript 8 Baseline, 1. 91 times 10 Superscript 8 Baseline. What conclusion does the student most likely make based on this data? Light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. All sound waves always have the same energy, so the temperature of the medium does not affect wave speed. Light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Answers

Answer:

Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids. (D).....

Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

What is sound wave?

Sound wave is a mechanical wave because it requires material medium for its propagation.

In solid, the particles or atoms are closely packed together, which usually slow down light waves causing a greater speed when they bounce on each other.

Thus, we can conclude the following based on the data;

Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Learn more about sound waves here: https://brainly.com/question/1199084

#SPJ2

79.8329 + 3.179 + 6.5263
And round

Answers

Answer:

90.0

Explanation:

Because 78.8329 + 3.179=83.0119

83.0119 + 6.5263=89.5382 rounded up is 90.0000

Hope this helps have a awsome afternoon:)

92.BIO In an emergency situation,
a person with a broken forearm
ties a strap from his hand to clip
on his shoulder as in Figure P8.92.
His 1.60-kg forearm remains in a
horizontal position and the strap
makes an angle of 0 = 50.0° with
the horizontal. Assume the fore-
arm is uniform, has a length of
l = 0.320 m, assume the biceps
muscle is relaxed, and ignore the
mass and length of the hand. Find
(a) the tension in the strap and
(b) the components of the reac-
tion force exerted by the humerus
on the forearm.

Answers

Based on the principle of equilibrium of forces:

the tension T, in the strap is 10.2 Nthehorizontal component of the reaction, Rx is 6.56 Nthevertical component of the reactionary force, Ry is 7.84 N

What is tension?

Tension is a type of force that is transmitted through a flexible medium such as a cable, wire or string pulled tight by forces acting from opposite ends.

The tension in the strap is calculated as follows:

Taking sum of moments from the right end as equal to zero:

mg × l/2 = Tsinθ × l

T = mg/2sinθ

T = 1.60 × 9.8 / 2 sin 50°

T = 10.2 N

Calculating the components of the reac-

reac-tionary force:

Horizontal component is RxVertical component is Ry

From Newton's third law:

Rx = Tcosθ

Rx = 10.2 × cos 50°

Rx = 6.56 N

Ry - Tsinθ = 0

Ry = Tsinθ

where;

T = mg/2sinθ

Ry = mgsinθ/2sinθ

Ry = mg/2

Ry = 7.84 N

Learn more about tension at: https://brainly.com/question/24994188

What does Schrödinger's cat explain in quantum mechanics?.

Answers

Answer:

Schrodinger's cat explains that the state of an object is not known until  

an observer observes the state - therefor if the cat is in an enclosed box and the probability of some toxic substance escaping is 1/2, the cat is 1/2 dead and 1/2 alive until its actual state is observed by an external observer. An old saying "is the moon really there if no one is looking at it"

What would the gravitational field strength be if 100kJ are required to lift a 6kg mass 20m

Answers

Answer:

The formula is: weight/mass = gravitational field strength.

Explanation:

What is the period and frequency of the second hand on a clock?

Answers

Answer:

Explanation:For second hand, period = 1 min = 3660 s; frequency = 0.0166 Hz}\\\mbox{For minute hand, period = 1 hr = 3600 s; frequency = 2.77}\times10^{-4} Hz\\\mbox{For hour hand, period = 12 hrs = 4300 s; frequency = 2.3}\times10^{-5} Hz.

Which best describes the current atomic theory? (1 point) a Since it is only a theory it should not be used in practice. b It has not been tested enough to be useful for developing technology. c It is the most powerful explanation scientists have to offer at this time. d There is very little chance it will be changed in the future.

Answers

Answer:scientist try to fix it

Explanation:

Topics:
1. Explain the causes of ocean currents around the world.
Refer to at least 2 types of heat transfers.
Refer also to the specific heat capacity of the substances involved.

2. Explain features of a thermal food container that can help to keep food
warm.
Refer to at least 2 types of heat transfers.
Refer also to the specific heat capacity of the materials used.

Answers

I need you to make me an invented poem written please not in image

How could you increase the kinetic Energy of an object without changing
its mass or gravity? *

Answers

Answer: Height

Explanation:

You could raise it further off the ground.

Which statements describe vectors?

Answers

Answer:

Vectors have a size and direction. Each of the existing vector quantity has a magnitude and a direction. Having direction along with the magnitude is the difference of a vector quantity from a scalar quantity. Vectors are indicates with arrows.

Vectors are quantities which have both magnitude and direction.

What are vectors?

Vectors are quantities which have both magnitude and direction.

Vectors are different from scalars which have only magnitude but no direction.

Vectors are represented by arrow written above them.

The sum of vectors are not obtained by ordinary algebraic additions, but by vector additions.

Learn more about vectors at: https://brainly.com/question/24855749

How much work is needed to move horizontally a body 20m by a force of 30N the angle between the body and the horizontal surface is 60 degree?

Answers

Not sure try 50+20|60

Work done in moving the body horizontally is 300 J.

What is meant by work done by an object ?

Work done by an object is defined as the dot product of the force and displacement of the object.

Here,

Displacement of the body, s = 20 m

Force applied on the body, F = 30 N

Angle made with the horizontal, θ = 60°

Work done in moving the body,

W = Fs cosθ

W = 30 x 20 x cos60

W = 600/2

W = 300 J

Hence,

Work done in moving the body horizontally is 300 J.

To learn more about work done, click:

https://brainly.com/question/29989410

#SPJ2

help please only answer if you really know i need this ill give 50 points ;( thx

Answers

4, 1, 3, 2 ??

I think that’s right

what is the velocity of a plane that traveld 3000 miles from new york to california in 5.0 hours

Answers

The Velocity is 666.67 mph

Sunspots, flares, prominences, and coronal mass ejections are all caused by.

Answers

Answer:

Sunspots, flares, prominences, and coronal mass ejections are all caused by magnetic activity on the Sun.

how does water in a hot spring get hot?

Answers

Water may come into contact with very hot rock heated by magma

The speed of sound in a solid medium is more but less in a gas medium.Why?


​

Answers

Answer:

The speed of sound is the most in solids as the molecules present in solids are closer where as the molecules in gas medium are far apart from each other....

Explanation:

Hope this helps!!!!

1. A scientist wants to raise the temperature of a
100 gram sample of glass from -45°C to 15°C. How
much heat energy is required to cause this change?
Specific heat of glass 0.800J/gºC.

Answers

[tex]\huge\sf\purple{Solution :- }[/tex]

Here Given,

Mass = 100 gram

Change in temperature = -45°C - 15°C => -55°C

Specific heat of glass (c) = 0.800J/g°C

★Heat Energy (Q) = mc∆t

➙ 100g × (-55)°C × 800/1000 J/g°C

➙ 10 × (-55) × 8

➙ -4400 J

★ Hence, Heat Energy is required to cause this change -4400 J = 4400J

______________________________________

3 How could you test whether a plastic rod that has been given an electric charge would attract or repel a magnet? Describe your method and include a diagram. What result would you expect to observe?​

Answers

The charged plastic rod has affinity for insulting items. So, things like saw dust, paper pieces get attracted to it. On the other hand, magnet has affinity for magnetic material like iron. So, it will attract iron pieces.

Does the velocity of the center of mass change in a collision.

Answers

Answer:

The velocity of the system's center of mass does not change, as long as the system is closed. The system moves as if all the mass is concentrated at a single point.

An object that allows light to pass through is said to...

Select one:
a. absorb light.
b. transmit light.
c. reflect light.
d. refract light.​

Answers

A

Explanation:

.

it's let's the light to pass

An object like glass that allows light to pass through is said to refract light.

PROPERTIES OF WAVES

Four general properties of waves are;

RefractionReflectionInterferenceDiffraction

An object that allows light to pass through is said to refract light because of the followings

If it absorbs, it will not transmit the light.If it reflect, some portion of the light will not be transmitted.Light refract when moving from one medium to another.

Therefore, An object like glass that allows light to pass through is said to refract light.

Learn more about Light waves here: https://brainly.com/question/25847009

A 200-kg boulder is 1000-m above the ground.
a) What is its potential energy when it is 1000-m above the ground?

Answers

Answer: 1,960,000 J

Explanation:

A rollercoaster is designed as shown below. If the roller coaster starts at the top of the
first hill from rest, describe what will happen to the rollercoaster. How could you fix this
problem?

Answers

The roller coaster only has enough energy to return to its original height which is less than then the second hell . If there a friction then the energy will be lost and therefore it will stop ever lower ,So to slove this problem the roller coaster need more energy

To view an enlarged upright image of an object through a simple magnifier, where must the object be located?.

Answers

Answer:within the focal length of the lens, provided the focal length is shorter than the near point distance.

Explanation:Hope it helps

Sometimes the north and south poles of atoms in a material will line up. What is the term for the region where this occurs?.

Answers

Answer:

Magnetic domains

Why do the golf ball have dimples?

Answers

Answer:

HELLO! I WILL EXPLAIN WHY GOLF BALLS HAVE DIMPLES.

Explanation:

DIMPLES ON A GOLF BALL CREATE A THIN BOUNDARY LAYER OF AIR THAT CLINGS TO THE BALL'S SURFACE. THIS ALLOWS THE AIR TO FOLLOW THE BALL'S SURFACE A LITTLE FARTHER AROUND THE BACKSIDE OF THE BALL, THEREBY DECREASING THE SIZE OF THE WAKE.

I AM SO SORRY ABOUT THE CAP LOCKS I THINK MY CAP LOCKS BUTTON IS PUSHED, AND IT IS NOT POPPING UP FOR SOME REASON.

ANYWAYS, HAVE A GREAT DAY!!!!!!

for an aerodynamic structure

1. If you stare at a field of dots moving upward for 10 seconds and they suddenly stop, in which direction would the dots appear to drift after they stop

Answers

The direction the dots will appear to drift after they stop is upwards.

Upward motion of the dots

The upward motion of the dots appears to be continuous upward for first few seconds it stopped.

This is as a result of conditioning of the mind picturing the dots moving upwards. After few seconds the dots were, the eye perceives a continuous upward motion of the dots before it readjusts and notice that it has stopped.

Thus, the direction the dots will appear to drift after they stop is upwards.

Learn more about drift velocity here: https://brainly.com/question/25700682

The amount of energy in the universe:
A)is decreasing slowly.
B)is rapidly decreasing.
C)is increasing quickly.
D) remains constant.

Answers

Answer: D

Explanation:

The total energy in the universe is constant. It cant be created or destroyed

Answer:

A

Explanation:

energy decays overtime

state the Newton's law Newton's second law of motion ​

Answers

Answer:

It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

Answer:

Newtons Second law of motion states that"The rate of change of momentum is directly proportional to the force applied"

Other Questions
how did the food administration help to ensure that troops had enough food overseas? ....................................... To qualify for a police academy, candidates must score in the top 10% on a general abilities test. The test has a mean of 200 and a standard deviation of 20. Find the lowest possible score to qualify. Assume the test scores are normally distributed. Please explain! Everett and marie are going to make fruit bars for their family reunion. THey want to make 4 times the amount the recipe makes. If the recipe calls for 2/3 cups of oil, how much oil will they need The vertex angle of an isosceles triangle measures 42. A base angle in the triangle has a measure given by (2x + 3). What is the value of x? What is the measure of each base angle? Imagine you want to collect money for a charity at your school. Choose a charity and think of three ways to raise money for it. must describe the methods (30-50 words per way) Low Level Programming Language is also known as: (A) Object Oriented Language (B) Procedural Oriented Language (C) Machine Level Language (D) Processor Level Language A file that is 233 megabytes is being downloaded. If the download is 14.5% complete, how many megabytes have been downloaded? Round your answer to the nearest tenth. the major impact of the Delhi sultanate on India was the? A. decline in the importance of sub-saharan trade routes. B. ride of a decentralized government system. C.introduction of a new religion into the culture. D. elimination of the caste system. Can someone please help fill in the bubbles? A city bus company charges $2.50 per trip. They also offer a monthly pass for $85.00. Write and solve an inequality to find how many times a person should use the bus so that the pass is less expensive than buying individual tickets. Interpret the solution. The Graph of y=e3 is transformed as shown in the graph below. Which equation represents the transformed function? Jason is 15 years old . his sister Nadine is 4 years younger . how old will his sister be in 6 years time? A triangle has side lengths of 17 cm and 7 cm. Which could be the value of the third side, 28 cm or 19 cm? Write a main idea paragraph about cells (5 sentences) I'm giving a free brainliest to the first person who can answer my question. Who is the voice actor for elsa in "LeT iT gOoOOo" The first year of a babys l life is most important. During his or her first year, a baby learns, grows, and changes more rapidly than at any other time. The baby learns to move and manage his or her body. The baby also learns ways of reacting to people and objects in the environment. The main idea is: The changes in the first year of life are most important. A. A baby is happiest during the first year of life. B. A babys growth is more rapid during the first year than at any other time. what is a good topic for a four part introduction ?? pls helppp Two angles are complementary. The larger angle is 36 more than the smaller angle. What is the measure of the larger angle? Please help me pass this (will give brainliest)