which of the following electric charge doesn't exist in nature? a. 8.00 cross times 10 to the power of negative 17 end exponent c b. 4.80 cross times 10 to the power of negative 19 end exponent c c. negative 2.40 cross times 10 to the power of negative 19 end exponent space c d. negative 1.60 cross times 10 to the power of negative 18 end exponent c

Answer:

0.64

Explanation:

v = d/t

v= 16/25

v= 0.64

Answer:

Electrical energy is transferred from the wall socket to the computer. Electrical energy is transformed to sound and light energy when the computer is turned on. Electrical energy is transformed to heat energy when the computer stays on.

Option C is correct. The energy carried by photons in a light wave is 5.3 × 10⁻¹⁹ J.

Given information,

Planck’s constant, h = 6.626 × 10⁻³⁴J-s

frequency,  f = 8 × 10¹⁴ Hz

The energy of a photon is given by a relation between Planck’s constant and frequency,

Energy = Planck’s constant × frequency

E = h ×  f

Putting values,

E = 6.626 × 10⁻³⁴ ×  8 × 10¹⁴

E =  5.3 × 10⁻¹⁹ J

Hence, the energy carried by photons in a light wave of frequency f = 8 × 10¹⁴   Hz is 5.3 × 10⁻¹⁹ J

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Answer:

I think its 1

Explanation:

The reason why I think it's 1 is because 0.5m/s^2 /0.5 m/s= 1 s

Answer:

Gravity

Explanation:

That's easy because gravity is the only thing that can pull us down that hard at that fast without anything helping it.

A solid uniform sphere of mass 1.85 kg and diameter 45.0 cm spins about an axle through its center. starting with an angular velocity of 2.50 rev/s, it stops after turning through 17.2 rev with uniform acceleration. the net torque acting on this sphere as it is slowing down is closest to - 1.22 × \(10^{-4}\) Nm.

We can use the rotational kinematic equations to solve this problem. The equation that relates the final angular velocity, initial angular velocity, angular acceleration, and the displacement is

\(wf^{2}\) = \(wi^{2}\) + 2αθ

Where ωf is the final angular velocity, ωi is the initial angular velocity, α is the angular acceleration, and θ is the displacement.

We can solve for the angular acceleration, α

α = (\(wf^{2}\) - \(wi^{2}\)) / 2θ

We know that the initial angular velocity is ωi = 2.50 rev/s, the final angular velocity is ωf = 0 (since the sphere stops), and the displacement is θ = 17.2 rev. We can convert the units of rev to radians

θ = 17.2 rev × 2π rad/rev = 108.14 rad

Substituting these values into the equation for α, we get

α = (0 - \((2.50 rev/s)^{2}\)) / (2 × 108.14 rad)

α = -0.0053 rad/\(s^{2}\)

The moment of inertia of a solid uniform sphere about an axis through its center is given by

I = (2/5)M\(R^{2}\)

Where M is the mass of the sphere and R is the radius of the sphere. We know that the diameter of the sphere is 45.0 cm, so the radius is R = 22.5 cm = 0.225 m. Substituting the given values, we get

I = (2/5)(1.85 kg)\((0.225m)^{2}\)

I = 0.023 kg\(m^{2}\)

The net torque acting on the sphere can be calculated using Newton's second law for rotation

τ = Iα

Substituting the values we obtained for I and α, we get

τ = (0.023  kg\(m^{2}\))(-0.0053 rad/\(s^{2}\))

τ = - 1.22 × \(10^{-4}\) Nm

Therefore, the net torque acting on the sphere as it is slowing down is closest to - 1.22 × \(10^{-4}\) Nm (in the negative direction).

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Part A. We are given that rock is thrown straight upwards from a bridge with an initial velocity of +35 m/s. To determine the velocity after 2 seconds we will use the following equation of motion for the velocity of a body in free fall:

Where:

Now, we plug in the values:

Now, we solve the operations:

Therefore, the velocity after 2 seconds is 15.4 m/s.

Part B. To determine the displacement we will use the following formula:

Now, we substitute the values:

Solving the operations:

Therefore, the displacement is 50.4 meters.

The low-density, cold disks seen around some stars are distinct from the dense, hot disks found around some other stars because of their varied densities, temperatures, and positions.

- About circumstellar disc :

- A circumstellar disc (or circumstellar disk) is an accretion disk of matter in orbit around a star that has the shapes of a torus, pancake, or ring. It is made up of gas, dust, planetesimals, asteroids, or impact fragments. They are the sources of material where planets may form around the young stars.

- Gaseous clouds gradually collapse under the pull of gravity to become stars. As they fall toward the protostar, the atoms and molecules in the gas impart a slight rotation. The protoplanetary disk, a rotating plate of gas and dust, is produced by this rotation, which also gives the star its spin.

- A rotating circumstellar disk of dense gas and dust known as a protoplanetary disk surrounds a young, newly formed star, a T Tauri star, or a Herbig Ae/Be star.

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The tidal bulge on the side of the Earth opposite the moon (the secondary bulge) is caused by a.the centrifugal force.

This force is the result of the orbiting of the Earth-Moon system around its center of mass. The gravitational attraction between the Earth and the Moon causes the tides, with the Moon's gravitational attraction being the primary cause of the tides. However, the centrifugal force also plays a role in creating the tides.

As the Earth-Moon system orbits around its center of mass, the centrifugal force causes the water on the far side of the Earth to bulge outward. This bulge is opposite to the Moon, and it creates the secondary bulge. The centripetal force, which is caused by the same orbiting motion, pulls the water on the near side of the Earth toward the Moon, creating the primary bulge. Together, these forces work to create the tides that we observe on Earth. The tidal bulge on the side of the Earth opposite the moon (the secondary bulge) is caused by a.the centrifugal force.

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Answer:

33.333 ohms

Explanation:

voltage = power / current

3 / 0.3 = 10

resistance = voltage / current

10 / 0.3 = 33.33333

To test a Zener diode with a digital multimeter, follow these steps:

1. Turn off the power supply to the circuit.

2. Set your multimeter to the diode test mode. This is usually represented by a diode symbol on the multimeter dial.

3. Connect the black probe of the multimeter to the cathode end of the Zener diode and the red probe to the anode end of the diode.

4. Check the voltage reading on the multimeter. If the voltage reading is zero, the Zener diode is not conducting and is faulty. If the voltage reading is close to the Zener voltage rating, the Zener diode is good.

5. Reverse the probes and repeat the test. The voltage reading should be close to zero volts. If the voltage reading is still close to the Zener voltage rating, the Zener diode is faulty.

Note: Be sure to consult the datasheet of the Zener diode you are testing to ensure that you are using the correct voltage rating.

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Answer:

Explanation:

c slowing down since the distance is going down and the time is moving up.

It will take approximately 0.0054 seconds for the pulse to travel from one support to the other.

The time it takes for a pulse to travel from one support to the other in a stretched cord can be calculated using the wave speed formula. In this case, the wave speed is equal to the tension in the cord divided by the linear mass density of the cord. The linear mass density is equal to the mass of the cord divided by its length.

Given:
Mass of the cord (m): 0.65 kg
Distance between supports (L): 7.2 m
Tension in the cord (T): 120 N

First, we need to find the linear mass density (μ) of the cord:
μ = m/L
μ = 0.65 kg / 7.2 m
μ ≈ 0.0903 kg/m

Next, we can calculate the wave speed (v) of the pulse:
v = T/μ
v = 120 N / 0.0903 kg/m
v ≈ 1327.57 m/s

Finally, we can calculate the time (t) it takes for the pulse to travel from one support to the other:
t = L/v
t = 7.2 m / 1327.57 m/s
t ≈ 0.0054 s

In conclusion, it will take approximately 0.0054 seconds for the pulse to travel from one support to the other.

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Answer:6.273 x 10^6 kg N

Explanation:I'm not sure about the diameter though

Answer:

p=w/t

160/8=20

80/4=20

180/9=20

...so..all these uses equal power

The closest you can be to speaker B and be at a point of perfectly destructive interference- 1.008m.

The wavelength of sound emitted by speakers

= velocity / frequency

= 344 / 172

= 2 m

For destructive interference , path difference is equal to odd multiple of  half the wavelength .

path difference = 2 / 2 = 1 m

d₂ - d₁ = 1 m

d₂ = d₁ + 1 m

d₂ = .008 m + 1

 d₂ = 1.008 m

So, the closest you can be to speaker B and be at a point of perfectly destructive interference- 1.008m.

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The complete question is:

Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. The frequency of the waves emitted by each speaker is 172 HzHz. You are 8.00 mm from speaker A. Take the speed of sound in air to be 344 m/sm/s. What is the closest you can be to speaker B and be at a point of perfectly destructive interference?

When two or more cars arrive at an intersection at approximately the same time, the general rule is that the car on the right has the right of way.

However, if the cars are directly across from each other and there is no clear right or left, then the car that is already in the intersection has the right of way. In situations where there is still confusion, it is always best to proceed with caution and communicate with other drivers to ensure a safe and orderly flow of traffic.
When two or more cars arrive at an intersection at approximately the same time, the question of "who goes first?" depends on several factors.
1. Check for traffic signs or signals: Follow the rules indicated by stop signs, yield signs, or traffic signals to determine the right of way.
2. Right of way at a four-way stop: If it is a four-way stop, the first car to come to a complete stop has the right to proceed. If multiple cars stop at the same time, the car furthest to the right has the right of way.
3. Right of way at a T-intersection: If it is a T-intersection (three-way stop), the car on the through road has priority over the car on the terminating road.
Remember, always prioritize safety and ensure all drivers are aware of their turn before proceeding through the intersection.

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The force of gravity between two magnets is really considerably smaller than the magnetic force, despite the fact that two magnets correctly aligned would attract and stay together firmly.

Any two mass-containing things in the cosmos are subject to the basic natural force of gravity. According to the formula F = G * m1 * m2 / r2, where F is the force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them, the gravitational force between two objects varies in strength depending on their masses and the distance between them. The magnetic fields of two magnets are what create the force between them. Two magnets are aligned properly and it causes them to stick together tightly.

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Answer:

In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

Answer:zero

Explanation:

Light always travels at a constant speed of 299,792 kilometers per second in a vacuum, and it does not have an acceleration.

Therefore, the acceleration of sunlight is zero.

Spectroscopy is the technique that astronomers most frequently apply to determine the creation of stars, planets, and other objects.

Therefore , on conclusion i.e. each element has its own unique set of wavelengths that it can absorb light at. Based on these wavelengths, astronomers can determine the composition of an object from its spectra. Spectroscopy is the technique that astronomers most frequently apply to determine the build of stars, planets, and other objects.

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Answer:

Below

Explanation:

Find acceleration first

vf = vo + at     (starts from rest so vo = 0)

8 = 0 + at    

8 = at

d = vo t + 1/2 a t^2     (substitute 8 in for 'at')

200 = 0 t  + 1/2 (8) t

200 / 4 = t = 50 seconds for front of train to pass her at 8 m/s

  acceleration = change in velocity / change in time = 8 / 50 = .16 m/s^2

Back of train has to travel 120 meters at initial v = 8 m/s  and accelerating  at .16 m/s^2   :

  d = vo t + 1/2 a t^2

 120 = 8 t + 1/2 ( .16 ) t^2

           .16t^2 + 8t - 120 = 0      Quadratic Formula shows t = 13.25 s

vf = vo  + a t

vf = 8 m/s  + .16 m/s^2 ( 13.25 s) = 10.1 m/s

Answer:

Given that

speed u=4*10^6 m/s

electric field E=4*10^3 N/c

distance b/w the plates d=2 cm

basing on the concept of the electrostatices

now we find the acceleration b/w the plates  to find the horizontal distance traveled by the electron when it hits the plate.

acceleration a=qE/m=\(1.6*10^{-19}*4*10^3/9.1*10^{-31} =0.7*10^{15}\)=\(7*10^{14}\) m/s

now we find the horizontal distance traveled by electrons hit the plates

horizontal distance

\(X=u[2y/a]^{1/2}\)

=\(4*10^6[2*2*10^{-2}/7*10^{14}]^{1/2}\)

=\(3*10^{-2}\)= 3 cm

Answer:

B mate

Explanation:

Answer:

The mass of any amount of a solid, liquid, or gas relative to its volume is called density.

Answer: The mass of any amount of a solid, liquid, or gas relative to its volume is called density.

Dividing 12 volts by 3 amperes gives us a resistance of 4 ohms. Therefore, the correct answer to question 51 is 4 ohms.

Using Ohm's law, we can calculate the resistance of the DVD player by dividing the voltage by the current. In this case, the voltage is 12 V and the current is 3 A.

Resistance (R) = Voltage (V) / Current (I)

Substituting the given values into the formula:

R = 12 V / 3 A

R = 4 ohms

Therefore, the resistance of the DVD player is 4 ohms.

The resistance value of 4 ohms indicates how much the DVD player restricts the flow of electric current when connected to a 12 V power source. This resistance is important because it determines the amount of power consumed by the device and also affects the performance of the circuit. In this case, a resistance of 4 ohms means that for every ampere of current flowing through the DVD player, there will be a voltage drop of 4 volts across the device.

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Answer:

0.8102×3.44=2.787088

The product of 0.8102 m and 3.44 m can be written as 2.787488 m².

We can obtain the product of two quantities, such as 0.8102 m and 3.44 m, by multiplying their numerical values and merging them. In this instance, we get 2.787488 when we multiply 0.8102 by 3.44.

We multiply both amounts because they have the unit "m²" (metres), which equals the unit "m2" (square metres).

Consequently, 2.787488 m² is the result of multiplying 0.8102 m by 3.44 m. This implies that the final value, as represented by the square metres unit, indicates an area.

0.8102 m * 3.44 m = 2.787488 m²

Thus, the answer is 2.787488 m².

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Answer:

Following are the responses to the given question:

Explanation:

Please find the attached table.

\(\to t= 10\ /sec\\\\ \to v = 15\ m /sec\\\\ \to a= ?\\\\\to a=\frac{v}{t}\\\\\)

       \(=\frac{15}{10}\\\\=1.5\)

An international language for communication, aid in organising and comprehending biodiversity, facilitation of research and recording, support for conservation efforts, addition to our understanding of evolution, and consideration of cultural variation are all provided by a system for naming and identifying organisms.

Having a system for identifying and naming organisms is important for several reasons:

Clear Communication: A standardized system of identification and naming allows scientists, researchers, and individuals to communicate clearly and effectively about specific organisms. It provides a common language and reference point, enabling accurate and unambiguous communication about a particular species.

Organization and Classification: The system of identification and naming helps in organizing and classifying the vast diversity of organisms. By assigning unique names to each species, scientists can categorize and group organisms based on their similarities and relationships, making it easier to study and understand the natural world.

Reference and Documentation: The naming system serves as a reference for documenting and recording information about different species. It allows researchers to maintain detailed records of their findings, observations, and studies, facilitating future research, collaboration, and the sharing of knowledge.

Species Conservation and Management: Accurate identification and naming of organisms are crucial for conservation efforts. It helps in identifying endangered or threatened species, monitoring population trends, and implementing appropriate conservation strategies. It also aids in tracking invasive species and managing ecosystems effectively.

Historical and Evolutionary Understanding: The system of naming organisms often reflects their evolutionary history and relationships. By examining the scientific names and taxonomic classifications, researchers can gain insights into the evolutionary patterns, shared ancestry, and evolutionary relationships among different species.

Cultural and Traditional Importance: Many organisms have local, traditional, or cultural names that hold significance in specific regions or communities. Having a standardized system allows for the integration of local names with scientific names, fostering cultural preservation and respecting indigenous knowledge and practices.

Therefore, a system for identifying and naming organisms provides a universal language for communication, aids in organizing and understanding biodiversity, facilitates research and documentation, supports conservation efforts, contributes to our understanding of evolution, and respects cultural diversity.

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Using the equation I = /, where is the torque applied to the item and is the consequent angular acceleration, one may calculate the moment of inertia of a given object.

I = 46 Nm / 40 rad/s², which can be written as I = 1.15 kg.m², is the result of substituting the provided numbers into the formula. A result of this is that the object's moment of inertia is 1.15 kg/m². The distribution of mass within the object and its shape both affect the moment of inertia, which is a measurement of an object's resistance to rotational motion. The stiff body spinning about a fixed axis is covered by the formula presented here.

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