a meterstick is supported by a sharp stand at its 50cm mark and it is positioned horizontal. if a 20-g mass is hanging at the 5.0-cm mark, where a 50-g of mass would you place on the meterstick in order to keep the meterstick at rest and horizontal?

The speed of sound in the pipe is 150m/s and that found to be enhanced when air column is 150 mm long.

a two-pronged metal tool used for tuning musical instruments and determining standard pitch that produces a set tone when struck.

ΔL = 150mm => 0.15m = λ/2

               =>  λ = 2 x 0.15 => 0.3 m

The velocity of sound => frequency x wavelength

                                         500hz x 0.3 m  => 150m/s

The length of a tuning fork's prongs determines the pitch it produces. Each fork has a stamp that says the note it makes (for example, A) and the frequency in Hertz (e.g. 440 Hz). Higher pitch (frequency) noises are produced by shorter prongs than by longer prongs.

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The wavelength of the fundamental tone in this case is 10.00M

What is Wavelength?

Wavelength is a physical quantity that measures the distance between two consecutive points in a wave that are in phase, that is, that have the same degree of oscillation or displacement from their rest position. It is usually represented by the symbol λ (lambda) and is expressed in units of distance, such as meters, centimeters, or nanometers, depending on the scale of the wave being considered. In general, the wavelength of a wave is inversely proportional to its frequency, with longer wavelengths corresponding to lower frequencies and shorter wavelengths corresponding to higher frequencies.

The fundamental tone of an organ pipe that is open at one end and closed at the other has a wavelength that is four times the length of the pipe. Therefore, the wavelength of the fundamental tone in this case is:

λ = 4L = 4(2.50 m) = 10.00 m

where L is the length of the pipe.

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The compressed air used in these systems is of high quality and appropriate for the application, which can help to improve efficiency and reduce maintenance requirements.

The three air-preparation components located at the workstation are often close fitted into a unit referred to as the "air preparation unit" or "FRL unit" (which stands for "filter-regulator-lubricator" unit). This unit is used to prepare and condition the compressed air used in industrial applications, such as in pneumatic systems, to ensure that the air is clean, dry, and at the appropriate pressure for the application.

The filter component of the FRL unit removes impurities such as dust, oil, and water from the compressed air, which can cause damage or malfunction to downstream components if not removed. The regulator component controls the pressure of the compressed air to a desired level, while the lubricator component adds a fine mist of oil to the air to lubricate downstream components, which can extend their lifespan and improve their performance.

Overall, the FRL unit is a critical component of many pneumatic systems, as it ensures that the compressed air used in these systems is of high quality and appropriate for the application, which can help to improve efficiency and reduce maintenance requirements.

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Answer:8 meters

Explanation:100cm is a meter

Answer:

8 meters

Explanation:

800 cm * 0.01 m/1 cm = 8.0 m

The kinetic energy of the system does not change.

When two horseshoe magnets are placed next to each other, then they either attract or repel each other, depending on the position of their poles. if the poles are opposite they attract, if they are same they repel with other.

In case, if the poles of two horseshoe magnets are attracted to each other, indicating poles are opposite to each other. when the magnets are brought together then the work must be done to oppose the magnetic field between poles. This increases the potential energy of the system.

However, the question is about the kinetic energy of the system, which is related to the motion of the objects in the system. In this case, once the magnets are brought together they attract each other, they will have zero potential. Therefore, the kinetic energy will not change.

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1.11 miles

Explanation

Step 1

Diagram

so

a)let

for runner A

for runner B

also we know that

b) to set the equation, we need to apply the formula

so

Step 2

solve the equations

replace the x value from equation (2) into equation(1) and solve for y

finally, replace in eq ( 1) to find the x value

so, they are

so,they are

1.11 miles far away from the flagpole

Answer:

Three Minute Step Test

Push Up

Zipper Test

Sorry di ko po alam lahat

Answer:

3:4

Explanation:

Answer:

Explanation:

Force of gravity is equal to mass times g

Fg=150 N

Fg=mg

150=m(9.81)

m=150/9.81 kg

FnetX=20-10=10 N

Fnetx=ma

10=150/9.81(a)

a=0.654 ms^-2

Note acceleration might need significant figures so it a=0.7 ms^-2

For the normal force, if the object isn't moving up or down. Then you can assume it's equal to the gravitational force which is 150 N.

If the object is accelerating up or down. I don't know how you would find normal force because not enough information.

Answer:

what does it mean for a plate to subduct?

Explanation:

Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle.

Answer:

Hello There!!

Explanation:

The answer is b. solenoid.

the x-component of the pin's final velocity is 5.2 M/S

FULL SOLUTION BELOW THE IMAGE.

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The required  x-component of the pin's final velocity is 5.2 M/S

Velocity characterizes the bearing of the development of the body or the article. Speed is basically a scalar amount. Speed is basically a vector amount. It is the pace of progress of distance. It is the pace of progress of uprooting.

We have,

mass(m) = 7.5 kg, initial velocity(u) = 6.42 m/s

final velocity(v) = 5.43(cos12°i + sin12°j) m/s

So, conservation of momentum,

7.5(6.42i) = 7.5(5.43(cos12°i + sin12°j) m/s) + 1.6 Vp

Vp = 5.2i - 5.292j

x - component = 5.2 m/s

y - component = 5.292 m/s

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The belief about climate that was popular in the 1960s might have influenced your grandmother’s conclusion that she isn’t sure climate change is a problem (C). Climate change happened over hundreds and thousands of years, not quickly is correct option.

Your grandmother's conclusion that she doesn't think climate change is a problem may have been affected by the 1960s climate belief C. It was thought that climate change occurred slowly, spanning thousands of years. The rate at which the climate could change at the time was not well understood by the scientific community, and it was widely believed that climate change was a slow and gradual process. People may find it difficult to embrace the idea that human actions could create sudden and severe changes in the Earth's climate system because they perceive climate change as a gradual process.

Therefore, the correct option is (c).

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The flux through surface 1 (φ1) is 3200 Newton meters squared per coulomb.

To calculate the flux through surface 1 (φ1) in Newton meters squared per coulomb, we can use the formula:

φ1 = E * A * cos(θ)

where E is the magnitude of the electric field, A is the area of the surface, and θ is the angle between the electric field vector and the normal vector of the surface.

In this case, the magnitude of the electric field is given as 400 N/C. The surface is a rectangle with sides measuring 4.0 m in width and 2.0 m in length.

First, let's calculate the area of the surface:

A = width * length

A = 4.0 m * 2.0 m

A = 8.0 m²

Since the surface is a rectangle, the angle θ between the electric field and the normal vector is 0 degrees (cos(0) = 1).

Now, we can substitute the given values into the flux formula:

φ1 = E * A * cos(θ)

φ1 = 400 N/C * 8.0 m² * cos(0)

φ1 = 3200 N·m²/C

Therefore, the flux through surface 1 (φ1) is 3200 Newton meters squared per coulomb.

The question should be:
what is the flux through surface 1 φ1, in newton meters squared per coulomb? The magnitude of electric field is 400N/C. Where, the surface is a rectangle, and the sides are 4.0 m in width and 2.0 min length.

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Answer:

B. its speed increases

Explanation:

A brass rod is encased in aluminium. The speed of a sound wave in this decreases when it moves from the aluminium into the brass medium. Thus, the correct option is A.

Sound travels in different mediums in the form of waves. The speed of sound is the speed with which the sound wave travels in a medium. The speed of the wave depends on the density and the elasticity of the medium through which the sound waves travel. In general, the sound wave travels faster in the liquid mediums in comparison to the gas medium and these are quicker in solid mediums than in liquid mediums. Thus, the greater the elasticity and the lower the density of the waves, the faster the sound waves travel in that medium.

The speed of sound in aluminium is 5100m/s and in the brass medium, it is 6,923. So, if the sound wave is moving from aluminum metal to the brass medium, we can clearly observe that there is decrease in the speed of sound. So, we can say here that is the speed is decreases.

Therefore, the correct option is A.

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the distance of Venus from the Sun in kilometers is: 107,708,467 km

One astronomical unit (au) is approximately equal to 149.6 million kilometers. Therefore, Venus orbits the sun at a distance of approximately 224.4 million kilometers (1.5 x 149.6 million km) from the sun.
Hi! Venus orbits the Sun at a distance of approximately 0.72 AU (not 1.5 AU). To convert this distance to kilometers, you can use the following formula:

1 AU (Astronomical Unit) = 149,597,870.7 km

So, the distance of Venus from the Sun in kilometers is:

0.72 AU × 149,597,870.7 km/AU ≈ 107,708,467 km

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Answer:

\(F = kmg \\ k = \frac{F}{mg} \)

Explanation:

F = k . m . g

=> F = k . mg

\( = > k = \frac{F}{mg} (ans)\)

To calculate the power developed in R₁, we need to use the formula Power (P) = (Voltage)^2 / Resistance Assuming we have the values of voltage and resistance for R₁, we can plug them into the formula and solve for power.

The let's say the voltage across R₁ is 10 volts and the resistance is 5 ohms. Power (P) = (10V) ^2 / 5Ω = 20 watts Therefore, the power developed in R₁ is 20 watts. It's important to note that power is the rate at which energy is transferred, and it's measured in watts. It indicates how much work can be done in a given amount of time. In this case, the power developed in R₁ tells us how much energy is being used or dissipated by that particular resistor.

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Hi there!

We can use the following (derived) equation to solve for the final velocity given height:

vf = √2gh

We can rearrange to solve for height:

vf² = 2gh

vf²/2g = h

Plug in the given values (g = 9.81 m/s²)

(13)²/2(9.81) = 8.614 m

We can calculate time using the equation:

vf = vi + at, where:

vi = initial velocity (since dropped from rest, = 0 m/s)

a = acceleration (in this instance, due to gravity)

Plug in values:

13 = at

13/a = t

13/9.81 = 1.325 sec

Para hacerlo a m/s un método muy práctico es sólo dividir entre 3.6, por cuestiones de conversiones, lo puedes comprobar.

212 km/hr /3.6 = 58 m/s

Comprobación :

V= d / t

V= 212 m / 18000 seg <---- nota que aquí los segundos son de las 3.1hrs  

V= 58 m/seg

The wavelength, the speed of sound and the water level of the next resonant length (the fifth harmonics) are as follows;

An harmonics are waves with a frequency that is an integer multiple of the fundamental frequency.

The given frequency of the sound wave, f = 330 hz

The first water level that gives the first loud sound, l₁ = 17.8 cm

The water level from the open end at the second loud sound, l₂ = 57.3 cm

First part;

The first harmonics that gives the fundamental frequency for the pipe is expressed as follows;

\(\dfrac{\lambda}{4} = l_1+e\)
Where;

e = The distance to the antinode of the wave above the top of the pipe

The third harmonics is given by the formula

\(\dfrac{3\cdot \lambda}{4} = l_2+e\)

\(\dfrac{3\cdot \lambda}{4}- \dfrac{\lambda}{4} = \dfrac{\lambda}{2} = (l_2+e) - (l_1+e) = l_2 - l_1\)

\(\dfrac{\lambda}{2} = l_2 - l_1\)

λ = 2 × (l₂ - l₁)

λ = 2 × (57.3 - 17.8) = 79

The wavelength of the wave, λ = 79 centimeters = 0.79 meters

Second part;

Speed of sound, v = f × λ

Therefore; v = 330 Hz × 0.79 m = 260.7 m/s

Third part;

\(\dfrac{\lambda}{4} = l_1+e\)

\(\dfrac{3\cdot \lambda}{4} = l_2+e\)

Which gives; 3·(l₁ + e) = l₂ + e

3·l₁ + 3·e = l₂ + e

3·e - e = l₂ - 3·l₁

2·e = l₂ - 3·l₁

Therefore, 2·e = 57.3 - 3 × 17.8 = 2.9

The water level for the next resonant length, which is the fifth harmonics, is given by the formula;

\(\dfrac{5\cdot \lambda}{4} = l_3+e\)

Which gives;

\(l_3 = \dfrac{5\cdot \lambda}{4} - e\)

Therefore;

\(l_3 = \dfrac{5\times 79 }{4} - 1.95 = 96.8\)

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Answer:

a= 66/11

 =6ms^-2

The position (angle in radians) of the pendulum is

A. At t = 0.25 s,0.20 rad.

B. At t = 2.00 s, -0.23 rad.

C. At t = 540 s,0.23 rad.

Step 1. The motion of the pendulum is described by the equation

θ(t) = θ0 cos(ωt)

Where θ0 is the amplitude (initial angle), ω is the angular frequency (ω = 2πf), and t is time.

Given: f = 2.5 Hz, θ0 = 13° = 0.23 rad

Step 2. Part A

At t = 0.25 s,

θ = θ0 cos(ωt)

θ = 0.23 cos(2π2.50.25)

θ = 0.20 rad.

Step 3. Part B

At t = 2.00 s,

θ = θ0 cos(ωt)

θ = 0.23 cos(2π2.52.00)

θ = -0.23 rad

(Note: the negative sign indicates that the pendulum has swung to the left of its equilibrium position)

Step 4. Part C

At t = 540 s,

θ = θ0 cos(ωt)

θ = 0.23 cos(2π2.5540)

θ = 0.23 rad

(Note: after a long time, the pendulum settles into a steady oscillation with constant amplitude and frequency)

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A 0.40-kg mass is attached to a spring with a force constant of k = 257 N/m, and the mass–spring system is set into oscillation with an amplitude of A = 3.2 cm.

(a) The mechanical energy of the system is 0.131 J.

(b) The maximum speed of the oscillating mass is 0.259 m/s

(c) The maximum acceleration of the oscillating mass is 2.56 \(m/s^2\)

(a) The mechanical energy of the system can be found using the formula:
E = 1/2 k \(A^2\)
where k is the force constant and A is the amplitude.
Substituting the given values, we get:
E = 1/2 (257 N/m) \((0.032 m)^2\) = 0.131 J
When the mass is at its maximum displacement, all of the energy in the system is in the form of potential energy stored in the spring. Therefore, the potential energy of the spring is equal to the total energy of the spring-mass system.
(b) The maximum speed of the oscillating mass can be found using the formula:
v = Aω
where ω is the angular frequency given by:
ω = √(k/m)
Substituting the given values, we get:
ω = √(257 N/m / 0.40 kg) = 8.07 rad/s
v = (0.032 m) (8.07 rad/s) = 0.259 m/s
(c) The maximum acceleration of the oscillating mass can be found using the formula:
a = Aω\(^{2}\)
Substituting the given values, we get:
a = (0.032 m) \((8.07 rad/s)^2\) = 2.56 \(m/s^2\)

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Answer:

the magnetic field can be used to make electricity

Explanation:

Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current. Electricity generators essentially convert kinetic energy (the energy of motion) into electrical energy

Answer:

43.3 m/s.

Explanation:

Assuming the potential energy is due to the gravitational potential energy, we can use the conservation of energy to find the kinetic energy:

Total energy = Potential energy + Kinetic energy

Kinetic energy = Total energy - Potential energy

Kinetic energy = 300 J - 40 J = 260 J

However, we need to know the mass of the object to convert the kinetic energy to velocity. We can use the potential energy to find the mass:

Potential energy = mgh

40 J = m(9.81 m/s^2)(300 m)

m = 0.137 kg

Now we can use the kinetic energy to find the velocity:

Kinetic energy = (1/2)mv^2

260 J = (1/2)(0.137 kg)v^2

v^2 = (2*260 J) / 0.137 kg

v = 43.3 m/s (rounded to one decimal place)

Therefore, the kinetic energy is 260 J and the velocity of the object when it reaches the ground is 43.3 m/s.

Answer:

Thermal energy.

Explanation:

Density is a man made definition. The formula is Density = mass/volume

Mass is the number of grams of something. This definition is not complete and it is not the best, but it is the simplest. and it is  not the answer.

The answer is A ===> Thermal energy.

A new star forms through a process called stellar formation.

The stages in order from the beginning to completion:

1. Cloud Formation: A large cloud of gas and dust called a nebula is formed due to gravitational attraction between particles in space.
2. Condensation: The nebula begins to contract due to its own gravity, causing it to spin and flatten out into a disc.
3. Protostar Formation: As the cloud continues to shrink, the center becomes hotter and denser, eventually forming a protostar.
4. Nuclear Fusion: When the temperature in the core of the protostar reaches 15 million degrees Celsius, nuclear fusion begins. Hydrogen atoms combine to form helium, releasing a huge amount of energy in the form of light and heat.
5. Star Formation: The energy released from nuclear fusion creates pressure that counteracts the force of gravity. This results in a stable, fully-formed star.
So, a new star forms through the gradual process of cloud formation, condensation, protostar formation, nuclear fusion, and finally, star formation.

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Answer:

7980Pa

Explanation:

1cmHg = 133Pa

60cmHg = 7980Pa