If a charged particle is moving, it will have both and electric and magnetic field moving with it. true or false

Answer:

  12 km/h

Explanation:

Let v represent Yashvi's speed in km/h.

  time = distance/speed

  48/v -1 = 48/(v+4) . . . . time is 1 hour less at v+4 km/h

  48(v+4) -(v)(v+4) = 48v . . . . . multiply by v(v+4)

  48v +192 -v^2 -4v = 48v . . . eliminate parentheses

  v^2 +4v -192 = 0 . . . . . . . . . . put in standard form

  (v -12)(v +16) = 0 . . . . . . . . . . factor

  v = 12

Yashvi's speed is 12 km/hour.

__

Check

At 12 kph, it takes 48/12 = 4 hours to ride 48 km. At 12+4 = 16 kph, it takes 48/16 = 3 hours to ride 48 km. That's 1 hour less, as it should be

Answer:

The number of particles in state E0 over the number of particles in state E1  will reduce

Explanation:

E0 represents the ground level state when all the particles have same energy level.

E1 represents excited state in which only a few particle reaches

E0 and E1 get further apart  means that the energy difference between the two level increases.

Thus, the number of particles in state E0 over the number of particles in state E1  will reduce.

Wave parameters for transverse waves on the a string are 12.0 m/s, 0.05 m amplitude, and 0.4 m wavelength. and also is going upward at time t=0 due to the waves' propagation in the +x direction.

Gamma rays have the highest frequency, shortest wavelengths, and most energy. Radio waves, on the other hand, are the EM radiation types with the lowest energies, longest wavelengths, and lowest frequencies.

v = λf, where λ is the wavelength and f is the frequency. The wave yA has a speed of vA = λA fA = (2π/3) (0.64) ≈ 1.34 cm/s. The wave yB has a speed of vB = λB fB = (2π/5) (0.64) ≈ 0.80 cm/s. The wave yC has a speed of vC = λC fC = (2π/(-10)) (9.55) ≈ -3.01 cm/s. The wave yD has a speed of vD = λD fD = (2π/(-4)) (3.18) ≈ -7.93 cm/s. Therefore, the wave with the greatest speed is yA.

The smallest wavelength and longest frequency belong to the colour red. The wavelength of the colour red is around two nanometers. Violet is the colour with the highest frequency & shortest wavelength.

λ = 2π/k, where k is the coefficient of x in the argument of the cosine function. The wave yA has a wavelength of λA = 2π/3 ≈ 2.09 cm. The wave yB has a wavelength of λB = 2π/5 ≈ 1.26 cm. The wave yC has a wavelength of λC = 2π/(-10) ≈ 0.63 cm. The wave yD has a wavelength of λD = 2π/(-4) ≈ 1.57 cm. Therefore, the wave with the greatest wavelength is yA.

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Answer:

We're no strangers to love

You know the rules and so do I

A full commitment's what I'm thinking of

You wouldn't get this from any other guy

I just wanna tell you how I'm feeling

Gotta make you understand

Never gonna give you up

Never gonna let you down

Never gonna run around and desert you

Never gonna make you cry

Never gonna say goodbye

Never gonna tell a lie and hurt you

We've known each other for so long

Your heart's been aching but you're too shy to say it

Inside we both know what's been going on

We know the game and we're gonna play it

And if you ask me how I'm feeling

Don't tell me you're too blind to see

Never gonna give you up

Never gonna let you down

Never gonna run around and desert you

Never gonna make you cry

Never gonna say goodbye

Never gonna tell a lie and hurt you

No, I'm never gonna give you up

No, I'm never gonna let you down

No, I'll never run around and hurt you

Never, ever desert you

We've known each other for so long

Your heart's been aching but

Never gonna give you up

Never gonna let you down

Never gonna run around and desert you

Never gonna make you cry

Never gonna say goodbye

Never gonna tell a lie and hurt you

No, I'm never gonna give you up

No, I'm never gonna let you down

No, I'll never run around and hurt you

I'll never, ever desert you

Explanation:

RICK ROLLED

The efficiency of the pump defines its capacity to pump water upto a certain height under applied rated power. The formula for the efficiency of the pump can be given by,

η=power required/rated power

Answer and

0.654

Answer: A : 250 is the answer

B; The frequency of a wave is the number of complete oscillations (cycles) made by the wave in one second.

Instead, the wavelength is the distance between two consecutive crests (highest position) or 2 troughs (lowest position) of the wave.

In this problem, we are told that the leaf does two full up and down bobs: this means that it completes 2 full cycles in one second. Therefore, its frequency is

where  is called Hertz (Hz). So, the correct answer is

Explanation:

#Wavespeed

#1

\(\\ \rm\Rrightarrow v=\nu\lambda=500(3)=1500m/s\)

#2

\(\\ \rm\Rrightarrow v=2(0.4)=0.8m/s\)

#Wavelength

#1

\(\\ \rm\Rrightarrow \lambda=\dfrac{v}{\nu}=\dfrac{3}{2}=1.5m\)

#2

\(\\ \rm\Rrightarrow \lambda= \dfrac{1450}{40000}=0.03625m\)

#Frequency

\(\\ \rm\Rrightarrow \nu=\dfrac{v}{\lambda}=\dfrac{8}{20}=0.4Hz\)

#2

\(\\ \rm\Rrightarrow \nu=\dfrac{3\times 10^8}{15\times 10^{-2}}=0.2\timee 10^{10}=2\times 10^9Hz\)

Answer:

Both speed and velocity are changing!

Explanation:

Answer:

The velocity is \(v_n =14.09 \ m/s\)

Explanation:

From the question we are told that

    The velocity of the water in the pipe is  \(v_i = 1.0 \ m/s\)

     The pressure inside the pipe  is  \(P_i = 200000 \ Pa\)

      The pressure at the nozzle is  \(P_n = 101300 \ Pa\)

       The density of water is  \(\rho = 1000 \ kg / m^3\)

      For the height \(h_1 = h_2 = h\)

where  \(h_1\) is height of water in the pipe

  and  \(h_2\) is height of water at the nozzle

Generally Bernoulli equation is represented as

       \(\frac{1}{2} \rho * v_i ^2 + \rho * g * h_1 + P_i = \frac{1}{2} \rho v_n ^2 + \rho * g* h_2 + P_n\)

=>   \(\frac{1}{2} \rho * v_i ^2 + \rho * g * h + P_1 = \frac{1}{2} \rho v_n ^2 + \rho * g* h + P_2\)

Where \(v_n\) is the velocity of the water at the nozzle

Now  making  \(v_n\)  the subject

            \(v_n = \sqrt{\frac{2}{\rho} [ P_i - Pn + \frac{1}{2} \rho v_i^2}\)

substituting values

            \(v_n = \sqrt{\frac{2}{1000} [ 200000 - 101300 + \frac{1}{2} (1000 * (1.0)^2)}\)

           \(v_n =14.09 \ m/s\)

The velocity of the water exiting the nozzle is equal to 14.09 m/s.

Given the following data:

To calculate the velocity of the water exiting the nozzle, we would apply Bernoulli's equation:

Note: There's no change in height.

Mathematically, the velocity of the water exiting the nozzle is given by this formula:

\(V_n =\sqrt{\frac{2}{\rho} (P_i - P_n + \frac{1}{2} \rho v^2)}\)

Substituting the given parameters into the formula, we have;

\(V_n =\sqrt{\frac{2}{1000} (200000 - 101300 + \frac{1}{2} \times 1000 \times 1^2)}\\\\V_n =\sqrt{\frac{1}{500} (98700 + 500)}\\\\V_n =\sqrt{\frac{1}{500} (99200)}\\\\V_n =\sqrt{198.4}\)

Exit velocity = 14.09 m/s

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(a) The work done by the 150 N force is 877.5 Joules.

(b) The coefficient of kinetic friction between the crate and the surface is approximately 0.437.

To answer this problem, we must take into account the work done by the applied force as well as the work done by friction.

(a) The applied force's work may be estimated using the following formula:

Work = Force * Distance * cos(theta)

where the force is 150 N and the distance is 5.85 m. Since the force is applied horizontally and the displacement is also horizontal, the angle theta between them is 0 degrees, and the cosine of 0 degrees is 1.

As a result, the applied force's work is:

Work = 150 N * 5.85 m * cos(0) = 877.5 J

So, the work done by the 150 N force is 877.5 Joules.

(b) Frictional work is equal to the force of friction multiplied by the distance. The work done by friction is identical in amount but opposite in direction to the work done by the applied force since the crate travels at a constant speed.

The frictional work may be estimated using the following formula:

Work = Force of Friction * Distance * cos(theta)

The net force applied on the crate is zero since it is travelling at a constant pace. As a result, the friction force must be equal to the applied force, which is 150 N.

Thus, the work done by friction is:

Work = 150 N * 5.85 m * cos(180) = -877.5 J

Since the work done by friction is negative, it indicates that the direction of the frictional force is opposite to the direction of motion.

The coefficient of kinetic friction may be calculated using the following equation:

Friction Force = Kinetic Friction Coefficient * Normal Force

The normal force equals the crate's weight, which may be computed as:

Normal Force = mass * gravity

where the mass is 35.0 kg and the acceleration due to gravity is approximately 9.8 m/s^2.

Normal Force = 35.0 kg * 9.8 m/s^2 = 343 N

Now, we can rearrange the equation for the force of friction to solve for the coefficient of kinetic friction:

Force of Friction = coefficient of kinetic friction * Normal Force

150 N = coefficient of kinetic friction * 343 N

coefficient of kinetic friction = 150 N / 343 N ≈ 0.437

As a result, the kinetic friction coefficient between the container and the surface is roughly 0.437.

In summary, the work done by the 150 N force is 877.5 Joules, and the coefficient of kinetic friction between the crate and the surface is approximately 0.437.

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Answer:

Height of its bounce

Explanation:

The dependent variable is always what is being measured or the data collected.

Answer: If you aim a Prisma in the light it will have every color

Explanation:

Answer:

Average speed during the race = 357.14 meter/min

Explanation:

Given:

Distance cover in race = 5 km = 5,000 meter

Time taken by athlete = 14 min

Find:

Average speed during the race

Computation:

Speed = Distance / Time

Average speed during the race = Distance cover in race  / Time taken by athlete

Average speed during the race = 5,000 / 14

Average speed during the race = 357.14 meter/min

Answer:

Explanation:

a ) Let after time t , they have equal velocity .

v = u + at

for first toy car

v  = - 3.4 + 2.3 t

velocity of second car after t = 6.2 cm /s because it has zero acceleration .

- 3.4 + 2.3 t = 6.2

t = 4.17 s .

b ) Their speeds are equal to 6.2 m /s each .

c ) Let after time t they pass each other , so their displacement will be equal

s = s₀+ ut + 1/2 at² for first car and s = ut for second car as for second a = 0

s = 16.5 -3.4t + 1/2 x 2.3 t²  ., for second  s  = s₀+ 6.2 t

16.5 -3.4t + 1/2 x 2.3 t² = 9.5 + 6.2 t

1.15 t² - 9.6 t + 7 = 0

t = .8 s , 7.54 s .

d )

put t = .8 and 7.54 in the expression of s

s  =  9.5 + 6.2 t

= 9.5 + 6.2 x .8

= 14.46 cm

and

9.5 +6.2 x 7.54

= 56.25 cm

e)

In case of  a)  speeds are equal of both the cars and in case of c ) their positions are equal .

The current, i, in the circuit by using ohm's law (generalized for alternating currents), v is  \(\begin{aligned}& I= \\& \quad 0.4000+0.8000 i\end{aligned}\)

What is circuit?

An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.

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The quantity of heat energy that must be transferred to 2.25 kg of brass to raise its temperature from 20 °C to 240 °C is 195030 J

First, we shall list out the given parameters from the question. This is shown below:

The quantity of heat energy that must be transferred can be obtained as follow:

Q = MCΔT

= 2.25 × 394 × 220

= 195030 J

Thus, we can conclude quantity of heat energy that must be transferred is 195030 J

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7.1 The reading on V₁ is 0 V.

7.2 The total resistance of the circuit is 6 Ω.

The reading on V₁ is zero because the two cells are connected in parallel. When cells are connected in parallel, the voltage across each cell is the same. In this case, the voltage across each cell is 3 V. Therefore, the reading on V₁ is 0 V.

The total resistance of the circuit is given by the following equation:

R_T = R₁ + R₂

where:

R_T is the total resistance of the circuit in ohms

R₁ is the resistance of the first resistor in ohms

R₂ is the resistance of the second resistor in ohms

In this case:

R_T = ?

R₁ = 2 Ω

R₂ = 4 Ω

Substituting these values into the equation:

R_T = 2 Ω + 4 Ω

R_T = 6 Ω

Therefore, the total resistance of the circuit is 6 Ω.

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Option 1. Biological hazards (people working while ill, not washing hands, improper temperature control),  is the most common cause to food born illnesses.

Infectious organisms or their toxins are the maximum commonplace reasons for food poisoning. Food poisoning symptoms may additionally include cramping, nausea, vomiting, or diarrhea. Maximum meal poisoning is slight and resolves without treatment. ensuring ok hydration is the maximum vital element of treatment.

Foodborne infection (food poisoning) is a result of consuming contaminated meals, beverages, or water and may be a diffusion of microorganisms, parasites, viruses, and/or pollution. lots of those pathogens can be received thru extra than simply food, drinks, or water.

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a. Covalent bonds

As both share pair of electrons :)

Answer:

i'll help you bro

Explanation:

Answer:

Energy and work are measured in Joule.

Hope it will help :)

The element named boron can be used to enhance the properties of semiconductors.

A semiconductor is a material that has electronic properties and has the value that falls in between a conductor. It can be a metallic copper or an insulator.

The rise in temperatures leads to a fall in resistivity. The element named boron can improve the electrical properties of the semiconductor as they form the impurities.

Find out more information about the element.

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Light is an electromagnetic wave, and because of that, it doesn't need any material medium to propagate.

Also, the speed of light is not affected by temperature.

The speed of light in air is a constant value, equal to 3 * 10^8 m/s.

Therefore the correct option is the third one.

Answer:

The maximum compression of the spring after the collision is 0.15 m

Explanation:  

Given data  

Mass of the block (m) = 0.80 kg  

Initial velocity (v) = 1.2 m/s  

Spring constant (k) = 50 N/m  

Find the maximum compression of the spring (x) after compression  

Potential energy of the spring = Kinetic energy of the block  

Kinetic energy of the block = 0.5 × (mv)²  

Kinetic energy of the block = 0.5 × (0.80 × 1.2)²  

Kinetic energy of the block =0.5 × 0.9216  

Kinetic energy of the block = 0.4608 ---------->(1)  

Potential energy of the spring = 0.5 × k × x²  

Potential energy of the spring = 0.5 × 50 × x²  

Potential energy of the spring = 25 x² ---------> (2)  

Equate (1) and (2)  

25 x² = 0.4608  

x² =  0.018432 m²  

x =0.1357 = 0.15 m  

Therefore the maximum compression of the spring after collision is 0.15 m

The magnetic field is measured in different units, Gauss, Tesla and Orested·ampere/meter.

But the SI unit of the magnetic field is Tesla.

Thus the statement is true. The magnetic field strength is measured in tesla.

Answer:  a = 28,8

Explanation:

\(F = ma\)

m = 24 , a = 12

\(F=ma\\\\F = 24 x12\\\\F=288\)

Same force :

m = 10

a = ?

F = 288

\(F = ma \\\\288 = 10xa \\\\28,8=a\)

Answer:

A systematic error may result in a high degree of precision.

A systematic error will likely result in poor accuracy

Explanation:

It's what my work gave me when I got it wrong

The best investigation would be use a different amount of mass in the cart for five different trials, and measure the force needed to start the cart rolling each time.

Speed is not directly impacted by mass. It establishes how quickly an object can increase its speed (accelerate) in response to a specific force. Lighter objects change their speed by a given quantity with a given force in a shorter amount of time.

More mass means that heavier items are more challenging to move and stop. Greater mass in heavier items makes them more resistant to change than lighter ones. A bicycle or a Cadillac can be propelled or stopped once in motion. It is more difficult to start or stop an object the more big it is (has more inertia). Potentially, an object with the same kinetic energy could also be slower and heavier.

Kinetic Energy's formula is KE = 1/2 mv2. Because mass and kinetic energy are directly correlated, an object's kinetic energy rises as mass does. The same may be said for velocity.

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The magnitude of the resultant vector to round the answer to the nearest tenth, we look at the digit in the hundredth's place. If this digit is 5 or greater, we round up. If it is less than 5, we round down.

In the study of physics, we use vectors to represent quantities that have both direction and magnitude. It is often the case that we want to add two or more vectors together to obtain a single vector that represents the net result of these additions. The process of adding two or more vectors together is known as vector addition.The magnitude of the resultant vector is the length of the line that represents it on a scale drawing.

When we add two or more vectors together, the resultant vector is the vector that represents the net result of these additions. To find the magnitude of the resultant vector, we use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

In the case of vector addition, the hypotenuse is the resultant vector, and the other two sides are the component vectors. If we have two vectors a and b, the magnitude of the resultant vector is given by the following equation:|R| = √(ax2 + bx2)where R is the resultant vector, a and b are the component vectors, and x is the angle between the vectors.

For example, if the answer is 12.345, we would round it to 12.3.

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Neutrons and protons in an atom are acted upon by the strong force.

Strong force or strong nuclear force, a fundamental interaction of nature that acts between subatomic particles of matter. The strong force binds quarks together in clusters to make more-familiar subatomic particles such as protons and electrons.

Quarks are fundamental building blocks of matter. They are most commonly found inside protons and neutrons.

So being only option in which electrons are not present , option D is the correct answer.

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