Please help me with this question please

Answer:

The value is  [tex]I= 0.0597\ A[/tex]  

Explanation:

From the question we are told that

    The length of the solenoid is [tex]l = 15 \ cm = 0.15 \ m[/tex]

     The number of turns is  [tex]N = 100[/tex]

      The  magnetic field of the earth is  [tex]B = 5* 10^{-5} \ T[/tex]

Gnerally magnetic field is mathematically represented as

          [tex]B = \frac{\mu_o * N * I }{ l }[/tex]

=>        [tex]I= \frac{Bl}{ \mu_o *N }[/tex]

=>        [tex]I= \frac{ 5 *10^{-5} * 0.15}{4\pi *10^{-7} *100 }[/tex]  

=>        [tex]I= 0.0597\ A[/tex]  

Answer:

Evolution, Big Bang Theory and Cell theory.

Explanation:

These theories interest me because they talk about life and how life started.

Answer:

t

Explanation:

A gradual shift of the North Magnetic Pole's position on Earth a steady rise in the planet's average temperature, a reduction in the Moon's light reflection.

Dr. Washington and his team were able to recreate the impacts of physics on several components of weather, such as “how heat energy, water vapor, and chemicals travel between Earth's seas and the atmosphere,”

Through the use of climate models. 3 After that, computers projected atmospheric changes using the information from the climate models.

The 2007 Intergovernmental Panel on Climate Change (IPCC) report, which found that human behavior has a direct impact on the environment, used these models to support its findings.

As a result, Dr. Washington and his team were awarded the 2007 Nobel Peace Prize3.

Therefore, a slow change in the location of Earth’s North Magnetic Pole A gradual increase in Earth’s average temperature A decrease in the light reflection of the Moon

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Answer:

law of conservation of mass

Explanation:

hope that helped :)

Answer:

Answer:

wouldn't they be dead and there's no oxygen in space....right???

Answer:

no gravity and no oxygen

Explanation:

the bird would die of lack of oxygen before they're even able to fly, but they can't fly anyway because there's no gravity so they'd just float

Answer:

7.87x10^5m/s^2

Explanation:

Answer:

1 work is scalar quantity

2 it si unit of work is joule

3The equation of caculate is work= Force× Displacement

1 power is scalar quantity

2 it si unit of power is watt

3 the equation of calculateis power= work \time

Answer:

Vacculoes, vesicles

Explanation:

Organelles and other structures within the cells have vesicles collectively referred to as the endo-membrane system. The Lysosomes pack up the substances, and the vesicles go through the porsous membrame and secrete the substances.

Answer:

[tex]Mass = 50kg[/tex]

Explanation:

Required

Which has the larger inertia

Inertia (I) is calculated as follows:

[tex]I = mr^2[/tex]

Where m represents the mass of the object and r represents the distance from the axis.

Take for instance m = 10 and r = 4

The inertia would be:

[tex]I = 10 * 4^2[/tex]

[tex]I = 160[/tex]

Assume r is constant and m is increased to 25

The inertia becomes:

[tex]I = 25 * 4^2[/tex]

[tex]I = 25 * 16[/tex]

[tex]I = 400[/tex]

Notice that there is an increment in inertia, when the mass increased.

Hence, mass of 50kg will have the larger inertia.

Answer:newtons second law

Explanation:

To get something to accelerate you have to apply a pull force . if the mass increase a grater pull is required

The law that explains the fact that a heavier truck takes a longer time to stop is Newton's law of inertia.

According to Newtons first law of motion also called the law of inertia, a body will continue in a state of rest or uniform motion unless it is acted upon by an external, unbalanced force.

This law explains the reluctance of heavier objects to move or stop. The law that explains the fact that a heavier truck takes a longer time to stop is Newton's law of inertia.

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Explanation:

Fnet = Ft - Ff = 60N - 20N = 40N

a = Fnet / m = 40N / 25kg = 1.6m/s².

Calculate resultant force:

R = ma

Descomposing:

F - Fr = ma

Replacing we have:

60 N - 20 N = 25 kg * a

Resolving:

40 N = 25 kg * a

40 N / 25 kg = a

1,6 m/s^2 = a

The aceleration is 1,6 meters per second squared.

Answer:

a

 [tex]\theta _2 = 13^o[/tex]

b

 [tex]\theta _1 =32.94^o[/tex]

c

 [tex]\theta_c = 53.05^o[/tex]    

Explanation:

From the question we are told that

    The angle of incidence is  [tex]\theta_1 = 10^o[/tex]

    The refractive index of water is  [tex]n_1 = 1.3[/tex]

  Generally Snell's law is mathematically represented as

          [tex]n_1 sin(\theta_1) = n_2 sin(\theta_ 2)[/tex]

Here [tex]n_2[/tex] is the refractive index of air with value  [tex]n_2 = 1[/tex]

         [tex]\theta_2[/tex]  is the angle of refraction

So  

        [tex]\theta _2 = sin^{-1}[\frac{n_1 * sin(\theta _1)}{n_2} ][/tex]

=>     [tex]\theta _2 = sin^{-1}[\frac{1.3 * sin(10)}{1} ][/tex]

=>     [tex]\theta _2 = 13^o[/tex]

Given that the angle should not be greater than [tex]\theta _2 =45^o[/tex]  then the angle of incidence will be

       [tex]\theta _1 = sin^{-1}[\frac{n_2 * sin(\theta _2)}{n_1} ][/tex]

=>     [tex]\theta _1 = sin^{-1}[\frac{1 * sin(45)}{1.3} ][/tex]

=>     [tex]\theta _1 =32.94^o[/tex]

Generally for critical angle is mathematically represented as

        [tex]\theta_c = sin^{-1}[\frac{n_2}{n_1} ][/tex]

=>     [tex]\theta_c = sin^{-1}[\frac{1}{1.3} ][/tex]  

=>     [tex]\theta_c = 53.05^o[/tex]            

Answer:

Jupiter

Explanation:

Since the mass of Jupiter is the greatest from the given choices, it will exert the most force on any object orbiting 100km above its surface.

This is compliance with the Newton's law of universal gravitation which states that "the force of attraction between two bodies is directly proportional to the magnitude of their masses and inversely proportional to the distances between them".

Answer:

Sample Response: Jupiter would have the strongest gravitational pull on a satellite orbiting above its surface because gravity is directly proportional to mass and Jupiter is the most massive planet.

Explanation:

edge 2021

Answer:

T = 25 N

Explanation:

The question says that "A 25 n block is suspended by a wire from the ceiling vitamin the tension that appears in the wire ?"

Weight of the block, W = 25 N

Weight of a body acts in downward direction and tension acts in upward direction. It would mean that,

Tension = weight of the block

T = mg

T = 25 N

Hence, the tension in the wire is 25 N.

Answer:

The car will travel 541.67 m

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.

The relation between the initial and final speeds is:

[tex]v_f=v_o+a.t[/tex]

Where:

vf  = Final speed

vo = Initial speed

a   = Acceleration

t   = Elapsed time

The acceleration can be calculated by solving for a:

[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]

And the distance traveled is:

[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}[/tex]

The car travels during t=30 s, and its speed changes from vo=50 Km/h to vf=80 Km/h.

Let's convert the speeds to m/s. Recall 1 Km=1000 m and 1 h= 3600 s:

vo=50 Km/h * 1000/3600 = 13.89 m/s

vf=80 Km/h * 1000/3600 = 22.22 m/s

Calculating the acceleration:

[tex]\displaystyle a=\frac{22.22-13.89}{30}[/tex]

[tex]a = 0.28\ m/s^2[/tex]

Now for the distance:

[tex]\displaystyle x=13.89*30+\frac{0.28.30^2}{2}[/tex]

[tex]x=416.67\ m+125\ m[/tex]

[tex]\boxed{x = 541.67\ m}[/tex]

The car will travel 541.67 m

According to the question,

We know the relation,

→ [tex]v_f = v_o +at[/tex]

or,

→   [tex]a = \frac{v_f-v_o}{t}[/tex]

Now,

The acceleration,

→ [tex]x = v_o.t+ \frac{a.t^2}{2}[/tex]

By substituting the values,

     [tex]= \frac{22.22-12}{30}[/tex]

     [tex]= 0.28 \ m/s^2[/tex]

hence,

The distance traveled be:

→ [tex]x = 13.89\times 30+\frac{0.28.30^2}{2}[/tex]

      [tex]= 416.67+125[/tex]

      [tex]= 541.67 \ m[/tex]

Thus the above answer is right.

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Answer:

v₂ = 93.33 [m/s]

Explanation:

In order to solve this problem, we must apply the definition of momentum and amount of movement, which can be calculated by means of the following expression.

[tex]P=m*v[/tex]

where:

P = momentum [kg*m/s]

m = mass [kg]

v = velocity [m/s]

The amount of movement before and after the impact should be analyzed.

[tex](m_{1}*v_{1})+Imp_{1-2}=(m_{1}*v_{2})[/tex]

where:

m₁ = mass of the ball = 0.045 [kg]

v₁ = velocity of the ball before the hit = 0

Imp₁₋₂ = Impulse [kg*m/s]

v₂ = velocity after the hit [m/s]

[tex](0.045*0)+4.2=(0.045*v_{2})\\4.2 = 0.045*v_{2}\\v_{2}= 93.33 [m/s][/tex]

Answer: Since the oceans are mostly water, the elements hydrogen and oxygen are the most common. Sodium and chlorine are found in the salt in ocean water. Earth's atmosphere is made up of a combination of gases, including nitrogen, oxygen, and carbon dioxide. Nitrogen and oxygen are the most common elements in the atmosphere..

Answer:

It's 1.5 meters

Explanation:

plato

Answer:

1. An encounter with the barrier

2. The distance traveled by the washer.

Explanation:

Answer:

Peep above me is correct

1.An encounter with the barrier

2.The distance traveled by the washer

Explanation:

got it right on edge2020 have a nice day peeps ^w^

Answer:

D) Z,X,Y,W

Explanation:

TOOK THE QUIZ MATE, TOOK THE MF QUIZ

Answer:

D

Explanation:

edge 21

Answer:

v = 6.06 m/s

Explanation:

In order for the rider to pass the top of the loop without falling, his weight must be equal to the centripetal force:

[tex]Centripetal Force = Weight \\\frac{mv^2}{r} = mg\\\\\frac{v^2}{r} = g\\\\v = \sqrt{gr}[/tex]

where,

v = minimum speed of motorcycle at top of the loop = ?

g = acceleration due to gravity = 9.8 m/s²

r = radius of the loop = diameter/2 = 7.5 m/2 = 3.75 m

Therefore, using these values in equation, we get:

[tex]v = \sqrt{(9.8\ m/s^2)(3.75\ m)}[/tex]

v = 6.06 m/s

Hello!!

For calculate the volume of the liquid, lets applicate the formula:

[tex]\boxed{V=m/ p }[/tex]

[tex]\textbf{Being:}[/tex]

[tex]\sqrt{}[/tex] V = Volume = ?

[tex]\sqrt{}[/tex] m = Mass = 6 g

[tex]\sqrt{}[/tex] p = Density = 25 g/ml

[tex]\text{Let's \textbf{replace} and resolve: }[/tex]

[tex]V = 6 \ g / 25 \ g / m l[/tex]

[tex]V = 0,24 \ m l[/tex]

[tex]\textbf{Result:}[/tex]

The volume of the liquid is 0,24 ml.

Answer:

Because it is always the substance’s density divided by the density of water which is 1 g/cm 3

Explanation:

The density of water is 1g/cm³;

  Specific gravity = [tex]\frac{density of substance}{density of water}[/tex]

Since specific gravity is a relative comparison of a substance density with that of water, the values always the same.

Density of water is 1 and it will have no effect on the density of the substance.

The only difference is in the units. The density of a substance will have a unit but that of the specific gravity will have no unit.

Numerically, dividing by 1 has no implication.

Answer:  the answer is C

Explanation:Specific gravity is the density of a substance divided by the density of water. Since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

Answer:

a. -39.2 m/s; -78.4 m

b. -31.2 m/s; -46.4 m

c. -47.2 m/s; -110.4 m

Explanation:

We are given/can infer these variables:

We want to find the displacement and the final velocity of the rock.

We can use this equation to find the final velocity:

Plug in the known variables into this equation.

The final velocity of the rock is -39.2 m/s.

Now we can use this equation to find the displacement of the rock:

Plug in the known variables into this equation.

The displacement of the rock is -78.4 m.

We are given/can infer these variables:

We can use this equation to find the final velocity:

Plug in the known variables into this equation.

The final velocity of the rock is -31.2 m/s.

We can use this equation to find the displacement:

Plug in known variables:

The displacement of the rock is -46.4 m.

We are given/can infer these variables:

We can use this equation to find the final velocity:

Plug in the known variables into this equation.

The final velocity of the rock is -47.2 m/s.

We can use this equation to find the displacement:

Plug in known variables:

The displacement of the rock is -110.4 m.

Answer:

5000 N

Explanation:

Since F - f = ma, where F = driving force = 5000 N, f = opposing force, m = mass of car and a = acceleration of car.

Since the car is moving with constant velocity, a = 0.

So, F - f = ma

F - f = m(0)

F - f = 0

F = f.

Since F = 5000 N and F = f, f = 5000 N.

So, the opposing force is 5000 N

The opposing force car, weight 11000 N that is moving at constant velocity is 5000 N.

The opposing force can be calculated by the formula,

F - f = ma

Where,

F = driving force = 5000 N,

f = opposing force = ?

m = mass of car = 11000 N

a = acceleration of car

Since, the car is at constant velocity, a = 0.

So,

F - f = m(0)

F - f = 0

F = f.

Therefore, the opposing force car, weight 11000 N that is moving at constant velocity is 5000 N.

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