A meterstick (L = 1 m) has a mass of m = 0.248 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark.
1)What is the tension in the left string? --> i found this 1.2152 N
2)Now the right string is cut! What is the initial angular acceleration of the meterstick about its pivot point? (You may assume the rod pivots about the left string, and the string remains vertical)
3)What is the tension in the left string right after the right string is cut?
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4) After the right string is cut, the meterstick swings down to where it is vertical for an instant before it swings back up in the other direction. What is the angular speed when the meterstick is vertical?
5)What is the acceleration of the center of mass of the meterstick when it is vertical?
6)What is the tension in the string when the meterstick is vertical?
7)Where is the angular acceleration of the meterstick a maximum?
right after the string is cut and the meterstick is still horizontal
when the meterstick is vertical – at the bottom of its path
the angular acceleration is constant

Answer:

It would move forward.

Explanation:

Answer:

The force exerted by the rope on the bucket of water is 66.195 N.

Explanation:

Given;

mass of the bucket, m = 4.5 kg

acceleration of gravity, g = 9.81 m/s²

upward acceleration of the bucket, a = 4.9 m/s²

The upward force applied on the bucket by the rope is calculated as;

F = ma + mg

F = m(a + g)

F = 4.5(4.9 + 9.81)

F = 4.5(14.71)

F = 66.195 N

Therefore, the force exerted by the rope on the bucket of water is 66.195 N.

In a typical automobile engine, the mixture of gasoline and air is compressed from 1.0 atm to 9.5 atm in a cylinder. If the uncompressed volume of the cylinder is 410 mL, the volume in mL when the mixture is fully compressed can be calculated using Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at a constant temperature.

We can use the formula P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume. Substituting the values given in the problem, we get:

1.0 atm x 410 mL = 9.5 atm x V2

Solving for V2, we get:

V2 = (1.0 atm x 410 mL) / 9.5 atm = 44 mL

Therefore, the volume of the mixture when fully compressed is 44 mL. This means that the volume of the gas is significantly reduced when it is compressed at high pressure, which increases the temperature and causes it to combust and power the engine.

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Answer:

4

Explanation:

TRUST ME AND I AM SORRY IF RONG

Answer:

The real answer should be 1391. Considering the mass x acceleration

Answer:x rays are electromagnetic waves.

x rays are transverse waves

x rays travel at the speed of light

Explanation:

Answer:

Na+ca+CO=NACo^3

Explanation:

NA Burns violently with explosions that may spatter the material. Used for making gasoline additives, electric power cable, sodium lamps, other chemicals.

Answer:

 U = 2,195 10⁵ J

Explanation:

The potential energy is

      U = m g and

in this case each person has a mass of 75 kg and the elevator has a mass of 500 kg, the total mass is

 m_total = m_elevator + 4 m_person

      m_total = 500 + 4 75

      m_toal = 800 kg

let's calculate

       U = 800 9.8 28

       U = 2,195 10⁵ J

The angular velocity in rad/s is 753.9 rad/s.

The velocity in m/s of the hard drive at a radius of 0.0889 m is 67.02 m/s.

In Mathematics and Physics, the angular velocity of a physical object can be calculated by using this formula:

ω = θ/t

Where:

In order to convert the unit revolutions per minute (RPM) to radians per seconds (rad/s), we would multiply the value by 2π and then divide by 60 as follows;

Angular velocity in rad/s = 7200 × 2π/60

Angular velocity in rad/s = 753.9 rad/s.

At a radius of 0.0889 meters, the velocity of the hard drive in m/s can be calculated as follows;

Velocity = radius × angular velocity

Velocity = 0.0889 × 753.9

Velocity = 67.02 m/s.

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a: acceleration

Δv: change in velocity

t: time

a = Δv/t = (21-39)/8 = -18/8 m/s^2 = -2.25 m/s^2

Answer: Air

Explanation:

Roffns dn b bdd

Answer:

333N

Explanation:

=>First you have to find the mass of the asteroid.

so 882N÷9.8m/s²=90Kg

then,multiply it by Mars's gravity

=>90Kg*3.7m/s²=333N

suppose you have a straight wire that has a resistance of 5 ohms and a length of 11 meters, attached to a battery. The U is 5 volts, to the nearest 0.01.

Using the given information, we can determine the current flowing through the wire when the maximum force is experienced. The formula for the force on a wire in a magnetic field is:

F = B * I * L * sin(theta)

Where F is the force, B is the magnetic field strength, I is the current, L is the length of the wire, and theta is the angle between the magnetic field and the current. In this case, the maximum force occurs when sin(theta) = 1 (i.e., when the angle is 90 degrees).

Given F = 11 N, B = 7 T, and L = 11 m, we can solve for I:

11 N = 7 T * I * 11 m
I = 11 N / (7 T * 11 m)
I = 1 A

Now that we know the current, we can use Ohm's Law (V = I * R) to find the battery voltage, where V is the voltage, I is the current, and R is the resistance:

V = 1 A * 5 Ohms
V = 5

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Answer:

1. The wave created is a transversal wave because the medium goes up and down. (I used what someone put in the comments because it's correct.)

2. 20 Meters

3. 60 Hz (Hertz)

4. 1200m/s

Explanation:

Not sure if all of this is correct, but I did this assignment so..

Please mark me brainliest. I answered all questions.

Answer:

sound intensity is explained by the following formula I= P/A where I= sound intensity(W/m²),P=power(W),A= area(m²) I hope this helps good luck!

Answer:

In a quiet forest, you can sometimes hear a single leaf fall to the ground. After settling into bed, you may hear your blood pulsing through your ears. But when a passing motorist has his stereo turned up, you cannot even hear what the person next to you in your car is saying. We are all very familiar with the loudness of sounds and aware that they are related to how energetically the source is vibrating. In cartoons depicting a screaming person (or an animal making a loud noise), the cartoonist often shows an open mouth with a vibrating uvula, the hanging tissue at the back of the mouth, to suggest a loud sound coming from the throat Figure 2. High noise exposure is hazardous to hearing, and it is common for musicians to have hearing losses that are sufficiently severe that they interfere with the musicians’ abilities to perform. The relevant physical quantity is sound intensity, a concept that is valid for all sounds whether or not they are in the audible range.

Intensity is defined to be the power per unit area carried by a wave. Power is the rate at which energy is transferred by the wave. In equation form, intensity I is I=PAI=PA, where P is the power through an area A. The SI unit for I is W/m2. The intensity of a sound wave is related to its amplitude squared by the following relationship:

\(\displaystyle{I}=\frac{\left(\Delta{p}\right)^2}{2\rho{v}_{\text{w}}}\\\).

Here Δp is the pressure variation or pressure amplitude (half the difference between the maximum and minimum pressure in the sound wave) in units of pascals (Pa) or N/m2. (We are using a lower case p for pressure to distinguish it from power, denoted by P above.) The energy (as kinetic energy mv22mv22) of an oscillating element of air due to a traveling sound wave is proportional to its amplitude squared. In this equation, ρ is the density of the material in which the sound wave travels, in units of kg/m3, and vw is the speed of sound in the medium, in units of m/s. The pressure variation is proportional to the amplitude of the oscillation, and so I varies as (Δp)2 (Figure 2). This relationship is consistent with the fact that the sound wave is produced by some vibration; the greater its pressure amplitude, the more the air is compressed in the sound it creates

Sound intensity levels are quoted in decibels (dB) much more often than sound intensities in watts per meter squared. Decibels are the unit of choice in the scientific literature as well as in the popular media. The reasons for this choice of units are related to how we perceive sounds. How our ears perceive sound can be more accurately described by the logarithm of the intensity rather than directly to the intensity. The sound intensity level β in decibels of a sound having an intensity I in watts per meter squared is defined to be β(dB)=10log10(II0)β(dB)=10log10⁡(II0), where I0 = 10−12 W/m2 is a reference intensity. In particular, I0 is the lowest or threshold intensity of sound a person with normal hearing can perceive at a frequency of 1000 Hz. Sound intensity level is not the same as intensity. Because β is defined in terms of a ratio, it is a unitless quantity telling you the level of the sound relative to a fixed standard (10−12 W/m2, in this case). The units of decibels (dB) are used to indicate this ratio is multiplied by 10 in its definition. The bel, upon which the decibel is based, is named for Alexander Graham Bell, the inventor of the telephone.

Table 1. Sound Intensity Levels and IntensitiesSound .

When using optical fiber, the term "scattering" refers to the change in the direction of light rays after they strike small particles or impurities in the medium.

Scattering is a phenomenon that occurs when light interacts with matter, causing the light to be redirected in different directions. In the case of optical fiber, scattering can occur when light travels through the fiber and encounters small particles or impurities in the glass, causing the light to be scattered in different directions. This can result in some loss of signal or distortion of the transmitted light, which can be a concern in certain applications such as telecommunications or medical imaging.

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Answer:

JUST A MINUTE KAPENG MAINIT

Answer:

Its A ik cuz i just studied it when i was answering this question...

Explanation:

have a good day!

Answer:

height of the lighthouse = 48 ft

Lighthouse is 4x higher than Zara

Explanation:

Solve this as a similar triangles problem (geometry):

let h = height of the lighthouse

h/36 = 4/3

3h = 144

h = 144/3 = 48

proportionality factor = 4/3 = 48/36 = 1.33

Option (a) is correct, the dose limits established for the OSL, TLD, film badge, and pocket dosimeter are valid for alpha, beta, and x radiations.

The OSL (Optically Stimulated Luminescence), TLD (Thermoluminescent Dosimeter), film badge, and pocket dosimeter are all commonly used devices for measuring and monitoring ionizing the radiation exposure.

Among the given options, alpha, beta, and x radiations are all forms of ionizing radiation. These devices are capable of measuring the dose of the radiation received from these types of the radiations, and their established dose limits are valid for the alpha, beta, and x radiations.

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Answer: A. Cotton Pants

Explanation:

Answer:

A

Explanation:

Answer:

true matter takes up space and is anything that is around us

Answer:

1:A 2:B 3:B hope this helps and God Bless

A) The BEST example of how “access to food” shapes the health of a diet is food that is higher in fat and sugar is often inexpensive.

B) Pauline is hoping to lose weight so she is going to eliminate all fats from her diet and stick strictly to fruits and vegetables advice to give is without fats, she will not have enough energy.

C) Rohan does not think that he needs to worry much about diet because he is naturally rather thin and does not have any health problems. He tends to eat a lot of fast food, even though he knows it is not the healthiest choice. However, he figures that he is young, so he does not need to worry about it too much If he is not eating healthy, he is increasing the chance of serious health problems later.

Healthy foods are those that provide you with the nutrients you need to sustain your body's well-being and retain energy. Water, carbohydrates, fat, protein.

Given question have description about healthy food and eating habits,

the best possible answer are given according to understanding.

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Answer:

A car driving in a straight line 20 m/s

Explanation:

ayepecks silly

The speed of the object is: C. Constant in time.

The object is moving to the left and is experiencing a net force to the left. This means that there is an unbalanced force acting on the object, which is causing it to accelerate to the left.

If the magnitude of the force is decreasing with time, then the acceleration of the object is also decreasing with time. This means that the object's velocity is changing at a decreasing rate.

Therefore, the speed of the object is:

C. Constant in time.

While the object is accelerating, its speed can still be constant if the acceleration is perpendicular to its motion, such as in circular motion. However, in this case, since the acceleration is in the same direction as the object's motion, the speed is not increasing.

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Gases such as carbon dioxide (CO2) play a crucial role in climate and weather patterns.Carbon dioxide, along with other greenhouse gases like methane and water vapor, helps trap heat in the Earth's atmosphere, leading to the greenhouse effect.

This effect is essential for maintaining a habitable temperature on Earth. Without greenhouse gases, the planet would be too cold to support life.

However, the increased concentration of greenhouse gases, primarily due to human activities like burning fossil fuels, has led to an enhanced greenhouse effect, resulting in global warming. The rise in CO2 levels has been directly linked to the increase in average global temperatures and climate change.

Moreover, changes in CO2 levels can affect weather patterns and climate systems. The absorption and release of heat by the atmosphere, influenced by greenhouse gases, contribute to the formation of weather systems such as storms, precipitation patterns, and wind patterns.

Therefore, gases like carbon dioxide are indeed important factors in climate and weather, and their concentrations and effects are subjects of significant scientific study and concern.

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Your chances of landing on land if dropped at a completely random spot on the planet would be about 29%.

Around 71% of the Earth’s surface is covered in water, and only about 29% of the planet’s surface is land. This means that if you were dropped at a random spot on Earth, your chances of landing on land would be around 29%. There are many land masses on the planet, including the seven continents and various islands around the world.

The size of the land mass is not taken into consideration in this calculation; for example, Australia is the smallest continent but it is still considered a land mass. Hence, if you want to increase your chances of landing on land, you should make sure that your drop zone is nowhere near the oceans, seas or any other large bodies of water.

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