Se tiene un péndulo cuyo frecuencia de oscilación es de 0.4 Hz. Cual sera la frecuencia de oscilacion de otro péndulo cuya longitud es el triple del anterior

Answer:

m = FpCos0 / a

Explanation:

it just is

A box of mass m is pulled at an angle θ by a force Fp along a frictionless surface. The box travels to the right with acceleration a

What is the mass m of the box?

Answer: m = FpCos0/a

Answer:

90 A

Explanation:

Applying,

P = VI.............. Equation 1

Where P = Power, V = Supply voltage, I = current.

Make I the subject of the equation

I = P/V.............. Equation 2

From the question,

Assuming the Voltage of the main electric supply is 120 V

Given: P = 10.8 kW = 10800 W, V = 120 V (household voltage)

Substitute these values into equation 2

I = 10800/120

I = 90 A

Answer:

the answer is Jupiter....

Main Asteroid Belt: The majority of known asteroids orbit within the asteroid belt between Mars and Jupiter, generally with not very elongated orbits. The belt is estimated to contain between 1.1 and 1.9 million asteroids larger than 1 kilometer (0.6 miles) in diameter, and millions of smaller ones

Answer:

The answer is Jupiter.

Explanation:

The energy of the high energy neutron is 940.51 MeV.

Speed is nothing but the distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity with the SI unit meter/second.

We know that mass of the neutron m₀ = 939.6 MeV/c²

A high energy neutron is travelling at a speed of 18 million m/s.

Given that, v = 1.8 * 10⁷ m/s

The energy of neutron is calculated with the formula, m₀* c²/√(1 - v²/c²)

⇒ 939.6 * (3* 10⁸)²/√[1 - (1.8 * 10⁷)²/(3* 10⁸)²]

⇒ 940.51 MeV

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Answer: 10 seconds for the car to go from a velocity of 10 m/s to 30 m/s with an acceleration of 2 m/s^2.

Explanation:

To calculate the time it takes for a car with an acceleration of 2 m/s^2 to go from a velocity of 10 m/s to a velocity of 30 m/s, we can use the equation:

time = (final velocity - initial velocity) / acceleration

In this case:

time = (30 m/s - 10 m/s) / 2 m/s^2

time = 20 m/s / 2 m/s^2

time = 10 s

Therefore, it takes 10 seconds for the car to go from a velocity of 10 m/s to 30 m/s with an acceleration of 2 m/s^2.

A turntable that is initially at rest is set in motion with a constant angular acceleration a (alpha). What is the angular velocity of the turntable after it has made one complete revolution?

4√π.a

In physics, acceleration is the change in velocity within a certain unit of time. Generally, acceleration is observed as an object moving faster or slower. But acceleration is a vector quantity, so acceleration has both magnitude and direction. In other words, an object that is turning (eg a car that is still turning) also has acceleration too.

The SI unit of acceleration is m/s2. The acceleration dimension is L T-2.

In classical mechanics, the acceleration of an object with mass remains directly proportional to the resulting force acting on it and inversely proportional to its mass.

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The statement that is not true about  Common peak clipping is D. The naturalness of the speech is not degraded.

When common peak clipping is applied to speech, the waveform's peaks are truncated, which can result in distortion and a decrease in the naturalness of the speech. This distortion is caused by the introduction of harmonics and other artifacts that were not present in the original signal.

The loss of naturalness is particularly noticeable when the clipping threshold is set too low, as more of the signal will be clipped and greater distortion will be introduced. To minimize the impact on speech naturalness, it's essential to choose an appropriate clipping threshold and apply the technique judiciously.

In summary, common peak clipping can degrade the naturalness of speech due to the distortion introduced by truncating the waveform's peaks. While it can be useful in certain applications, care should be taken to preserve speech quality by selecting an appropriate clipping threshold.The correct answer is d.

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Answer:

electromagnetic waves can travel through a vacuum where as mechanical waves have to have a medium to travel

Explanation:

The following statement is false about the concept of virtuality it is an ill-defined concept (option d).

Virtuality refers to the various dimensions of team members' reliance on technologies, the geographic dispersion of team members, and the team's capability to work together while being physically separated from one another. The virtuality of a team is determined by the degree to which the team relies on computer-mediated communication rather than face-to-face communication.

It also refers to a range of factors that influence how virtual teams work together and collaborate on shared goals. Virtuality is defined as a multidimensional concept that captures the reliance on technologies, geographic dispersion of team members, and the ability of teams to work together while being physically separated from one another. Therefore, the statement "It is an ill-defined concept" is incorrect. The correct option is d.

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Answer: 14

Explanation: 35•0.40

The minimum force to start this block moving is 14N,formula to be used to find  minimum force(F= μ N

those minimal steps, including the use of force, required to defuse a crisis or protect oneself from an aggressive act or hostile intent. Once the target obeys orders or stops taking hostile action, all actions must stop.

To solve such problems, you must find the second derivative: The force is at its minimum if the second derivative is positive; at its maximum if the second derivative is negative.

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Answer:

can u make the picture less blurry pls

Explanation:

Answer: 10 cm

Explanation:

\($$The focal length is: \\ \\ \begin{aligned}f &=\frac{R}{2} \\&=-\frac{46}{2} \\f &=-20 \mathrm{~cm}\end{aligned}$$\)

\($$ Since the image is virtual: \\ \\ :\begin{aligned}\frac{v}{u} &=m \\\Rightarrow & v=m u \\\Rightarrow &v=2 u\end{aligned}$$\)

\($$ Using: \\ \\ \begin{aligned}&\frac{1}{l}=\frac{1}{v}+\frac{1}{u} \\&\frac{1}{20}=-\frac{1}{2 u}+\frac{1}{u} \\&\frac{1}{2 u}=\frac{1}{-20} \\&\Rightarrow u=-10 \\&\therefore u=10 \mathrm{~cm}\end{aligned}$$\)

Therefore, you must be 10 cm away from the mirror so that your virtual image is twice the size of your actual face

Answer:

Potential difference = 8 Volts

Explanation:

Given the following data;

Power = 12 Watts

Current = 1.5 A

To find the potential difference;

Power = current * voltage

12 = 1.5 * voltage

Voltage = 12/1.5

Voltage = 8 Volts

Therefore, the potential difference which is the same as voltage is 8 Volts.

Answer:20Hz to 20000Hz

Explanation:

Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz.

Explanation:

Wavelength = speed of light/frequency

Answer is

\(6 \times {10}^{ - 7} \)

Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.

To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.

The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).

Using the equation:

v = v₀ + at

where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:

v = 0 + (0.75 m/s²) * t

v = 0.75t m/s

The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:

v = ωr

Substituting the values:

0.75t = ω * 300

Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:

ω = ω₀ + αt

ω = 0 + (0.75 m/s²) * t

ω = 0.75t rad/s

We can now substitute the value of ω into the equation:

0.75t = (0.75t) * 300

Simplifying the equation gives:

0.75t = 225t

t = 0.75 seconds

The time elapsed is 0.75 seconds.

To calculate the distance traveled (s), we can use the equation:

s = v₀t + (1/2)at²

Since the initial velocity (v₀) is zero, the equation becomes:

s = (1/2)at²

s = (1/2)(0.75 m/s²)(0.75 s)²

s = (1/2)(0.75 m/s²)(0.5625 s²)

s = 0.2119 meters or approximately 21.19 centimeters

Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.

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Answer:

emotions

Explanation:

emotions are how you feel and can happen any time

Hope it helps <333

Answer:

emotions affect your body and how you feel

Answer:

\(3m/s^2\)

Explanation:

Apply the uniforma acceleration equation \(v=u+at\)

v = Final velocity of the car

u = Initial velocity of the car

a = Acceleration of the car

t = Time taken for the car to reach its final velocity

Since the car starts from rest, initial velocity \(u=0m/s\)

\(30 = 0 + a(10)\)

\(a = 3m/s^2\)

Where a tap supplies water at 26°c while another supply at 82°c. If a man wishes to bath with water at 40°c, then the ratio of the mass of hot water to that of cold water is: 1/3.

The ratio of the mass of hot water to that of Cold water is determined as follows:

M₁C (82  40) = M₂C (40-26)

Where M₁C is the Mass of Tap 1; and

M₂C is the Mass of Tap 2.

Thus,

M₁C (82  40) = M₂C (40-26)

M₁/M₂ = 14/42

= 1/3

Thus, it is right to state that the ratio of the mass of hot water to that of cold water is: 1/3.

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Momentum is never created or destroyed. It's conserved. The total amount after a collision is the same as it was before the collision.

In this scenario, the total is 10 kg-m/s before the collision, so it's going to be 10 kg-m/s after.

Ball 2 has 4 kg-m/s, so Ball 1 has the other 6 kg-m/s of momentum.

The recoil speed of the cannon after firing the cannonball is 0.0061 m/s.

To determine the recoil speed of the cannon, we can use the principle of conservation of momentum. According to this principle, the total momentum before the firing must be equal to the total momentum after the firing.

Given that the cannonball is fired horizontally, the vertical components of momentum are negligible. Therefore, we only need to consider the horizontal momentum.

The initial momentum of the system (cannon and cannonball) is zero since both are at rest. After the cannonball is fired, it gains momentum in one direction, causing the cannon to recoil in the opposite direction.

The magnitude of the momentum gained by the cannonball is given by:

momentum of cannonball = mass of cannonball × velocity of cannonball

Since the cannonball is not provided in the question, we cannot calculate this value directly. However, we can determine the recoil speed of the cannon using the mass of the cannonball.

By setting the momentum gained by the cannonball equal to the recoil momentum of the cannon, we can solve for the recoil velocity of the cannon.

Recoil momentum of the cannon = momentum of cannonball

recoil velocity of the cannon × mass of the cannon = mass of cannonball × velocity of cannonball

recoil velocity of the cannon = (mass of cannonball × velocity of cannonball) / mass of the cannon

Plugging in the given values, assuming the mass of the cannonball is 1 kg and the velocity of the cannonball is 200 m/s, and the mass of the cannon is 1300 kg:

recoil velocity of the cannon = (1 kg × 200 m/s) / 1300 kg

recoil velocity of the cannon ≈ 0.0061 m/s

Therefore, the recoil speed of the cannon after firing the cannonball is approximately 0.0061 m/s.

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The spring stiffness, or spring constant, of the given perfect spring is approximately 137.9623 N/m. This means that for every meter of extension, the spring will exert a force of 137.9623 N.

This value was obtained by applying Hooke's Law and calculating the ratio of the change in force to the change in extension using two data points from the table.

To determine the spring stiffness, we need to calculate the spring constant (k) using Hooke's Law, which states that the force applied on a spring is directly proportional to the extension it undergoes.

Hooke's Law can be represented as F = kx, where F is the applied force and x is the extension of the spring.

In the given table, we have the applied forces (F) and corresponding extensions (x). We can use any two data points from the table to find the spring constant.

Let's choose the first and last data points from the table:

(x1, F1) = (0.43 m, 59.34 N) and (x2, F2) = (0.96 m, 132.48 N).

Using Hooke's Law, we can calculate the spring constant (k) as follows:

k = (F2 - F1) / (x2 - x1)
  = (132.48 N - 59.34 N) / (0.96 m - 0.43 m)
  = 73.14 N / 0.53 m
  ≈ 137.9623 N/m (rounded to 4 decimal places)

Therefore, the spring stiffness, or spring constant, is approximately 137.9623 N/m.

Hooke's Law is a fundamental concept in physics that describes the relationship between the force applied on a spring and the resulting extension it undergoes.

The formula F = kx represents this relationship, where F is the applied force, k is the spring constant, and x is the extension of the spring.

By using two data points from the table, we can calculate the spring constant by finding the ratio of the change in force to the change in extension.

This calculation allows us to quantify the stiffness of the spring.
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Answer:

B)a tool to drop temperatures, mercury, an electric current, and a tool to measure resistance

1 ) The cheetah catches its prey after 277 m

2 ) The minimum distance the gazelle must be ahead of the cheetah to have a chance of escape is 31.5 m

Let the velocity of cheetah be Vc and that of gazelle be Vg.

Vc = 95.2 km / h

Vg = 79.9 km / h

Since they both travel for same amount of time,

Tc = Tg

dc / Vc = dc / Vg

( 0.0531 + x ) / 95.2 = x / 79.9

95.2 x = 4.24 + 79.9 x

15.3 x = 4.24

x = 0.277 km

x = 277 m

Distance travelled by cheetah in 7.5 seconds = 26.4 m / s * 7.5 s

Distance travelled by cheetah in 7.5 seconds = 198 m

Distance travelled by gazelle in 7.5 seconds = 22.2 m / s * 7.5 s

Distance travelled by gazelle in 7.5 seconds = 166.5 m

Distance that the gazelle need be ahead of cheetah to escape = 198 - 166.5 = 31.5 m

Therefore,

1 ) The cheetah catches its prey after 277 m

2 ) The minimum distance the gazelle must be ahead of the cheetah to have a chance of escape is 31.5 m

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Answer:

The slower the intended velocity, the closer the force expressed comes to equalling the linear inertia of the load (i.e. the amount of force needed to hold the weight motionless). From Equation 1, force is inversely proportional to time

Answer:

It states that the time rate of change of the velocity

The formula for energy consumed to calculate the energy consumed by the motor in 23 seconds:

To calculate the energy consumed by the motor in operating the centrifuge for 23 seconds, we need to use the formula:

Energy Consumed = Power x Time

Since we are assuming that there is no loss of energy, the power consumed by the motor will be equal to the kinetic energy of the rotating parts of the centrifuge. We can calculate this using the formula:

Kinetic Energy = (1/2) x Moment of Inertia x Angular Velocity^2

We don't have information about the moment of inertia or the angular velocity, but we do have the data from a single measurement, which gives us the frequency of rotation. We can use this frequency to calculate the angular velocity:

Angular Velocity = 2π x Frequency

Substituting this value in the kinetic energy formula, we get:

Kinetic Energy = (1/2) x Moment of Inertia x (2π x Frequency)^2

So, to find the energy consumed by the motor for 23 seconds while operating the centrifuge without any sample, follow these steps and use the provided formula.

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