there are 2 speed cameras,one in area where the speed limit is 30km/h,and another in area where the speed limit is 50km/h,IN WHICH ONE WILL THERE BE A SMALLER TIME INTERVAL BETWEEN THE PHOTOGRAPHS,explain your answer.
(help)​

The net force acting on the mass of 2.0 kg along the incline plane is 12.8 N.

Force is the product of mass and acceleration.

To calculate the net force acting on the mass along the inclined plane, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the net force of the mass is 12.8 N.

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Answer:

Moby

Explanation:

Newton's 2nd Law:  F = ma

a = F/m

Acceleration and mass are inversely proportional.  So if Moby and Tim want to accelerate at the same rate, Moby, with the greater mass, would need more force to accelerate at the same rate as Tim.

The acceleration of the rocket of mass 17250 kg when pushed with a thrust of 7236904 N is 409.73 m/s².

Acceleration can be defined as the rate of change of velocity

To calculate the acceleration of the rocket, we use the formula below, And this formula is obtained from newton's second law of motion.

Formula:

Where:

Make a the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The acceleration of the rocket is 409.73 m/s².

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The immediate source of the colored light produced by neon is the excited atoms of neon. When a neon gas tube is used to produce colored lights, electrical discharge is passed through the neon gas. When an electrical current is passed through the gas, it causes the electrons to gain energy and enter into an excited state.

The electrons then move from their ground state to higher energy levels in the atom, and they remain in this state for a brief period of time before returning to their ground state.

As the excited electrons fall back to their ground state, they release the energy that they had previously absorbed as light. Since each atom has a different energy level, each atom will release a different wavelength of light when the electrons fall back to their ground state.

Because of this, the colors of the light that are emitted from a neon gas tube are determined by the atomic structure of the neon gas and the energy that is supplied to it in the form of an electrical discharge. This is why neon lights emit a specific color of light when an electrical current is passed through them.

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Answer:

The work done by Joel is greater than the work done by Jerry.

Explanation:

Let suppose that forces are parallel or antiparallel to the direction of motion. Given that Joel and Jerry exert constant forces on the object, the definition of work can be simplified as:

\(W = F\cdot \Delta s\)

Where:

\(W\) - Work, measured in joules.

\(F\) - Force exerted on the object, measured in newtons.

\(\Delta s\) - Travelled distance by the object, measured in meters.

During the first 10 minutes, the net work exerted on the object is zero. That is:

\(W_{net} = W_{Joel} - W_{Jerry}\)

\(W_{net} = F\cdot \Delta s - F\cdot \Delta s\)

\(W_{net} = (F-F)\cdot \Delta s\)

\(W_{net} = 0\cdot \Delta s\)

\(W_{net} = 0\,J\)

In exchange, the net work in the next 5 minutes is the work done by Joel on the object:

\(W_{net} = W_{Joel}\)

\(W_{net} = F\cdot \Delta s\)

Hence, the work done by Joel is greater than the work done by Jerry.

Answer:

I think milligram is the correct answer.

Answer:

D. milliliter

Explanation:

Took it on usatestprep

True I guess

because if the force is balanced and there is no net force, the object will not accelerate and the velocity will remain constant...

Not sure

The dot product of a⃗ and b⃗ is 12.0.

The dot product of two vectors a⃗ and b⃗ is given by the formula: a⃗ ⋅ b⃗ = aixbi + ajxbj + akxbk, where ai, aj, ak are the components of vector a⃗ , and bi, bj, bk are the components of vector b⃗ .

In this case, we have:

a⃗ = 2.0i^ − 4.0j^ + 5.0k^
b⃗ = 11.0i^ + 2.5j^

So, the dot product of a⃗ and b⃗ is:

a⃗ ⋅ b⃗ = (2.0)(11.0) + (−4.0)(2.5) + (5.0)(0) = 22.0 − 10.0 + 0 = 12.0

Therefore, the dot product of a⃗ and b⃗ is 12.0.

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YES, ELECTRICITY CONCERNS ENERGY WHICH IS USED AS A FUEL . IN MODERN DAY TECH, MOST MACHINES USE ELECTRICITY AS A FUEL SUCH AS THE ELECTRONIC TRAIN IN TOKYO, JAPAN.

Answer:

Electricity is considered an alternative fuel under the Energy Policy Act of 1992. Electricity can be produced from a variety of energy sources, including natural gas, coal, nuclear energy, wind energy, hydropower, as well as solar energy and stored as hydrogen or in batteries.

Explanation:

hope this helps

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To find the current flow in a series circuit with a total resistance of 180 ω and a total voltage of 120 V, we can use Ohm's law,(Ohm’s law states the relationship between electric current and potential difference. The current that flows through most conductors is directly proportional to the voltage applied to it. Georg Simon Ohm, a German physicist was the first to verify Ohm’s law experimentally.)

which states that current (I) equals voltage (V) divided by resistance (R), or

I = V/R. Therefore, the current flow in this circuit would be:

I = 120V/180Ohm

I = 0.67 amperes (A)

So, the current flow in this series circuit is 0.67 A.

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To calculate the time it takes for a person to climb a mountain, we can use the average power and the height of the mountain.

It would take approximately 3,266.67 seconds or 54 minutes and 26.67 seconds for a 100 kg person with an average power of 30 W to climb a mountain that is 1 km high.

Given:

Mass of the person (m) = 100 kg

Average power (P) = 30 W

Height of the mountain (h) = 1 km = 1000 m

We can use the formula for work done:

Work (W) = Power (P) × Time (t)

The work done to climb the mountain is equal to the change in potential energy:

Work (W) = mgh

Where:

m = mass

g = acceleration due to gravity (approximately 9.8 m/s²)

h = height

Setting the two equations for work equal to each other, we have:

mgh = Pt

Solving for time (t):

t = mgh / P

Substituting the given values:

t = (100 kg) × (9.8 m/s²) × (1000 m) / (30 W)

Calculating the result:

t ≈ 3,266.67 seconds

Therefore, it would take approximately 3,266.67 seconds or 54 minutes and 26.67 seconds for a 100 kg person with an average power of 30 W to climb a mountain that is 1 km high.

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(a) The tangential distance travelled by the ladybug is 1.57 m.

(b) The tangential velocity of the ladybug is 0.785 m/s.

(c) The angular distance traveled by the ladybug after one revolution is  0.5π radians.

(d) The angular velocity of the ladybug is 3.14 rad/s.

The tangential distance travelled by the ladybug is calculated as follows;

d = 0.5 ( 2πr )

d = ( πr )

d = π x 0.5 m = 1.57 m

The tangential velocity of the ladybug is calculated as follows;

v = d / t

where;

v = ( 1.57 m ) / ( 2 s )

v = 0.785 m/s

The angular distance traveled after after one revolution is calculated as follows;

2πr = 1 rev

2π x ( 0.25) = 1 rev

1 rev = 0.5π radians

The angular velocity of the ladybug is calculated as follows;

v = ωr

ω = v/r

ω = 0.785 m/s / 0.25 m

ω = 3.14 rad/s

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Answer:

Volume

Explanation:

The sound will be a more tolerable 80 dB at a distance of approximately 39.7 m from the source.

The sound intensity level of a large power saw decreases as the distance from the source increases. This decrease follows an inverse square law, meaning that the sound intensity decreases by a factor of 4 for every doubling of the distance from the source. This means that to decrease the sound intensity level from 100 dB to 80 dB, the distance from the source must be increased by a factor of 10^(100-80)/10, which is approximately 7.94 times. So, if the sound intensity level is 100 dB at a distance of 5 m from the source, the sound will be a more tolerable 80 dB at a distance of approximately 39.7 m from the source. However, it's important to note that this is just an estimate and the actual sound level will depend on the specific conditions of the environment, including the presence of any obstacles that can affect the sound wave propagation.

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i hope you will accept my answer and please put a picture next for your next question

Answer:

Option C

Explanation:

Hydrocarbon + Oxygen = Carbon dioxide + Water

is example of combustion reaction

The cycle you linked to is a representation of the water cycle. The pictures represent the different stages of the water cycle:

The numbers in the cycle represent the different stages of the water cycle. The number 1 represents the cloud, the number 2 represents the raindrops, the number 3 represents the river, the number 4 represents the ocean, the number 5 represents the aquifer, and the number 6 represents the plant.

The water cycle is a continuous process that moves water from the Earth's surface to the atmosphere and back again. The water cycle is essential for life on Earth, as it provides water for plants and animals to drink and for humans to use for drinking, irrigation, and other purposes.

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To develop a rocket with a burnout velocity of 1000 m/s, the specific impulse (Isp) required needs to be calculated. The exit velocity (Ve or Vj) required for the rocket can be determined using the rocket motor equation. The burn time of the rocket can be found by considering the rocket's weight and acceleration over time.

Additionally, the speed of the rocket, assuming a flight path angle of 45 degrees and considering gravity, can be plotted.

1. Calculating Required Isp:

To calculate the required Isp, we use the rocket motor equation: Ve + (Pe - Pa)AC = (m0 / mf) * g0 * Isp, where Ve is the exit velocity, Pe is the pressure at the exit, Pa is the ambient pressure, AC is the throat cross-sectional area, m0 is the initial total mass (rocket weight + propellant weight), mf is the final total mass (rocket weight), g0 is the acceleration due to gravity, and Isp is the specific impulse.

Since the contribution of the pressure differential is ignored, the equation simplifies to Ve = (m0 / mf) * g0 * Isp.

Given the burnout velocity of 1000 m/s, we can substitute the values and solve for Isp.

2. Determining Exit Velocity:

Using the rocket motor equation and the burnout velocity, we can solve for the exit velocity (Ve). This value represents the speed at which exhaust gases leave the rocket nozzle.

3. Plotting Rocket Acceleration and Weight:

To plot the rocket acceleration as a function of time, we need to consider the mass of the rocket over time. Initially, the rocket weight is the sum of the rocket weight (300 kg) and propellant weight (800 kg). As the propellant burns, the rocket weight decreases, resulting in a changing acceleration.

4. Calculating Burn Time:

The burn time of the rocket can be determined by dividing the propellant weight (800 kg) by the propellant consumption rate, which is the mass flow rate of the propellant.

5. Plotting Rocket Speed:

Assuming a flight path angle of 45 degrees and neglecting gravity, the rocket's speed can be plotted over time. This plot represents the rocket's horizontal velocity.

6. Considering Gravity:

To plot the rocket's speed while considering gravity, we need to account for the vertical acceleration due to gravity. By considering the rocket's horizontal and vertical velocities, we can determine the overall speed of the rocket.

By following these steps, the required Isp, exit velocity, burn time, and velocity plots can be determined for the given rocket scenario.

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The centripetal force that must be exerted against the wings to keep the plane moving in a circle is 3.71 × 10⁴ N.

Given that,

Time = 30 min = 30 × 60 sec = 1.8 × 10³ s

Radius = 50 km = 50× 10³ m = 5× 10⁴ m

We know the expression for velocity as,

v = 2πr/(T) = (2π×5× 10⁴) /(1.8 × 10³) = (π×10⁵)/(1.8 × 10³) = (100× 3.14)/1.8 = 174.44 m/s ≈ 175 m/s

Mathematically, centripetal force can be written as,

F = mv²/r = (60,500× 175²)/(5× 10⁴) = 3.71 × 10⁴ N

Thus, required centripetal force is 3.71 × 10⁴ N.

The question is incomplete. The complete question is ' Captain Chip, the pilot of a 60,500-kg jet plane, is told that he must remain in a holding pattern over the airport until it is his turn to land. If Captain Chip flies his plane in a circle whose radius is 50.0 km once every 30.0 min, what centripetal force must the air exert against the wings to keep the plane moving in a circle?'

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Answer: depth, shade, fragrance

Explanation:

Answer:

The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP) – the body's biochemical way to store and transport energy. However, ATP is not stored to a great extent in cells. So once muscle contraction starts, the making of more ATP must start quickly.

Explanation: Brainliest?

The index of refraction of the transparent material where light has a wavelength of 600 nm and a frequency of 3 × 10¹⁴ Hz is 5/3. The correct option is 5/3.

To find the index of refraction (n) of a material, we can use the formula:

                          n = c / v

Where c is the speed of light in vacuum and v is the speed of light in the material.

Frequency of light, f = 3 × 10¹⁴ Hz

Wavelength of light in the material, λ = 600 nm = 600 × 10⁻⁹ m

The speed of light in vacuum is a constant, approximately 3 × 10⁸ m/s.

To find the speed of light in the material, we can use the formula:

                         v = f * λ

Substituting the given values:

v = (3 × 10¹⁴ Hz) * (600 × 10⁻⁹ m)

Calculating the value of v:

v = 1.8 × 10⁸ m/s

Now we can find the index of refraction:

n = c / v

n = (3 × 10⁸ m/s) / (1.8 × 10⁸ m/s)

Simplifying the expression:

n = 1.67

Among the given answer choices, the closest value to the calculated index of refraction is 5/3.

Therefore, the correct answer is 5/3.

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Answer:

Since the density of salt water is higher than that of fresh water.

Explanation:

Less salt water will be displaces and the ship will float higher.

Answer: a

Explanation: :)

Although the Standard Model predicted the mass of the Higgs boson accurately, the physicists lacked knowledge of the exact value because they failed to have a true belief about the mass of the Higgs boson.

The Higgs boson is a subatomic particle that is believed to play a crucial role in the process by which the universe formed. It was first proposed in the 1960s by a British physicist named Peter Higgs, who suggested that a particle like the Higgs boson must exist in order to explain how the universe acquired mass. The Higgs boson is also known as the "God particle," a nickname that has been used to describe it because it is believed to be responsible for giving mass to all other particles in the universe. The Higgs boson is one of the most important discoveries in particle physics, and it has led to a better understanding of the fundamental forces that govern the universe.

The physicists lacked knowledge about the mass of the Higgs boson because they failed to have a true belief about the mass of the Higgs boson. According to the theory of physics called the standard model, the physicists believed that their theory gave the right prediction but the mass of the Higgs boson was different from what they believed.

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The  safely removing a needle from a syringe based on safe sharps work practices is to use a needle box equipped with a needle removal device that permits the needle to fall directly into the needle box or sharps container when removed.

This method ensures that the needle is immediately disposed of in a safe manner, reducing the risk of accidental needlestick injuries. It is important to never remove the needle by twisting off the syringe directly by hand, as this can cause the needle to become dislodged and potentially cause harm. Similarly, asking a colleague to hold the syringe while you twist the needle off by hand also poses a risk. Recapping the needle with forceps before removing it by hand is also not recommended, as it increases the risk of needlestick injuries. Therefore, using a needle box equipped with a needle removal device is the safest and most effective method for removing a needle from a syringe.

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One statement that is not true is that UV radiation is a type of electromagnetic radiation. It is also a type of ionizing radiation. UV radiation is actually a form of non-ionizing radiation.

UV radiation, or ultraviolet radiation, is a type of electromagnetic radiation that falls between visible light and X-rays on the electromagnetic spectrum. It is often categorized into three types: UVA, UVB, and UVC. Unlike ionizing radiation, such as X-rays and gamma rays, which have enough energy to remove tightly bound electrons from atoms or molecules, UV radiation lacks the necessary energy to ionize atoms or molecules. Instead, it primarily interacts with the outermost electrons of atoms or molecules, leading to chemical reactions and causing biological effects.

UV radiation is commonly associated with sunlight and has various effects on living organisms and materials. It can cause sunburn, premature aging of the skin, and an increased risk of skin cancer. Exposure to excessive UV radiation can also damage the eyes and impair the immune system. It is important to protect oneself from excessive UV exposure by wearing sunscreen, protective clothing, and sunglasses.

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The motion  of Gabriella  is decelerated.

The motion of Franklin is uniform.

The motion of Kendall  is accelerated.

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

As per the given data after interval of time:

The final velocity of Gabriella decreases and the motion is decelerated.

The final velocity of Franklin remains same and the motion is uniform.

The final velocity of Kendall increases and the motion is accelerated.

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The rate at which the magnetic field strength is changing is equal to the negative of the induced emf divided by the area of the loop. In this case, the value of the induced emf is given, so we can substitute it into the equation along with the known area of the loop to find the rate of change of the magnetic field strength.

The rate at which the magnetic field strength is changing can be determined using Faraday's law of electromagnetic induction.

First, let's understand the given information.

We have a conductor formed into a flat loop that encloses an area in the xy-plane, which is oriented at a 30.0° angle with the xy-plane.

A uniform time-varying magnetic field is oriented parallel to the z-axis.

We need to find the rate at which the magnetic field strength is changing, given the induced emf in the loop.

According to Faraday's law, the emf induced in a closed loop is equal to the rate of change of magnetic flux through the loop.

The magnetic flux is the product of the magnetic field strength (B) and the area (A) of the loop:

Φ = B * A

In this case, since the loop is oriented at an angle of 30.0° with the xy-plane, we need to consider the component of the magnetic field perpendicular to the loop's plane.

The perpendicular component is given by B * cos(30.0°) = (sqrt(3)/2) * B.

Now, we can write the induced emf equation:

emf = -dΦ/dt

where emf is the induced emf, and dΦ/dt is the rate of change of magnetic flux.

Substituting the expression for magnetic flux, we get:

emf = -(d/dt) (B * A)

Since the area of the loop remains constant, we can take it out of the derivative:

emf = -A * (d/dt) B

Now, we can rearrange the equation to solve for the rate at which the magnetic field strength is changing (dB/dt):

(dB/dt) = -emf / A .

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A mass attached to a spring vibrates back and forth. at maximum displacement.

At the maximum displacement of a mass attached to a spring, the velocity is zero, but the acceleration is not zero.

The maximum displacement is the amplitude of the motion, at which point the restoring force of the spring is at its maximum, and the potential energy is also at its maximum.

The kinetic energy of the system is zero at the maximum displacement. As the mass attached to the spring moves towards its equilibrium position, its kinetic energy increases and its potential energy decreases, until it reaches the equilibrium position where the kinetic energy is at its maximum, and the potential energy is zero. The acceleration is zero at the equilibrium position. As the mass continues to move past the equilibrium position, the potential energy increases, and the kinetic energy decreases until it reaches the maximum displacement again, and the cycle repeats.

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