what does not affect the strenth of elecromagnets
A. Number of time the the wire is looped around the core
B. Size of the object being attached by the core
C.type of material in the core
D.among of material in the core

The output voltage of a step-up transformer is 2550volts.

A transformer is an electrical energy transfer device that steps up or steps down the voltage from one alternating-current circuit to one or more other circuits.

We are given that,

The primary voltage of a transformer = V₁ = 170V

The number of turns of coils of primary transformer = N₁ = 10turns

The number of turns of coils of secondary  transformer = N₂ = 150 turns

Thus , to get the output voltage V₂ of  a step-up transformer, we can use the formula,

[tex]\frac{V_{2} }{V_{1} } = \frac{N_{2} }{N_{1} }[/tex]

Where, V₁ is primary voltage of a transformer , V₂ is the output voltage (secondary) of a transformer , N₁ & N₂ are the number of turns of  coils primary and secondary transformer.

Therefore , after putting the values in above equation we can get,

[tex]V_{2} = \frac{N_{2} }{N_{1} } V_{1}[/tex]

[tex]V_{2} =[/tex] [tex]\frac{150}{10} 170volts[/tex]

[tex]V_{2} =[/tex] [tex]2550 volts[/tex]

Therefore, the output voltage of the step-up transformer would be 2550 volts.

To know more about transformer

https://brainly.com/question/17191428

#SPJ1

Making progress by conducting studies for research, project or article and presenting this progress to scientists represent a category that belongs to Science (Option A).

Sciences can be defined as a body of empirical knowledge whose development is based on the presentation of results from experiments in peer-reviewed publications and the generation of projects to investigate different issues of the real world.

Therefore, we can conclude that Science is a body of info based on the transference of knowledge which involves developing projects or writing scientific articles (Option A).

Learn more about the meaning of science here:

https://brainly.com/question/14054972

#SPJ1

The temperature increase of the ball is 1.63 ⁰C.

The potential energy possessed by the ball at the given height is calculated as follows;

P.E = mgh

where;

P.E = (10) x (9.8) x (150)

P.E = 14,700 J

If half of the energy of the ball is converted into heat energy, then the amount of heat capacity is calculated as follows;

Q = 0.5(P.E)

Q = 0.5 x 14,700

Q = 7,350 J

The increase in the temperature of the temperature of the ball is calculated as follows;

Q = mcΔθ

where;

Δθ = Q/mc

Δθ = (7350) / (10 x 450)

Δθ = 1.63 ⁰C

Learn more about heat capacity here: https://brainly.com/question/16559442

#SPJ1

The velocity of the ball just before it strikes the floor is -6.18 m/s. The velocity of the ball just after it leaves the floor is 5.3 m/s. Acceleration during contact with the floor is 3280 m/s^2. The compression of the ball during its collision with the floor is -9.42*10^-4 m

(a) The ball dropped from a height 1.95 meters. The velocity just before it strikes the floor is calculated by the kinematic equation. The initial velocity is zero.

v^2 = u^2 + 2aS

v^2 = 0 + 2*-9.8*(0-1.95)

V = -sqrt(38.22) = -6.18 m/s

(b) The velocity just after it leaves the floor on its way back up.  The initial velocity is zero in this case. The ball rebounds to a height of 1.44 m.

v^2 = u^2 + 2aS

v^2 = 0 + 2*-9.8*(1.44-0)

v = sqrt(28.22) = 5.3 m/s

(c) The acceleration during contact with the floor is calculated where time is 3.50 ms.

Time in seconds = 3.5/1000 = 0.0035

a = change in velocity/time

a = (5.3 m/s - -6.18 m/s)/0.0035

a = 11.48/0.0035 = 3280 m/s^2

(d) Assuming the floor is absolutely rigid. The amount which the ball compress during its collision with the floor is given as,

v^2 = u^2 + 2aS

S = (v^2 - u^2)/2a

S = (-6.18 m/s - 0)/2*3280 m/s^2

S = -9.42*10^-4 m

To know more about kinematic equation here:

https://brainly.com/question/28712225

#SPJ1

According to the given statement the charge Q is 6 coulomb that requires of energy to be moved through a potential difference .

Note that whenever a voltage is stated, it refers to the difference in potential between two places. Every battery, for instance, has two terminals, and its voltage seems to be the difference in potential between them.

The voltmeter is a tool used to measure potential difference. Some varieties, like voltmeters, feature a pointer on a dial, but digital displays are more common. To detect the potential difference across a circuit element, you must connect a voltmeter in parallel, unlike an ammeter.

W is work done

V is potential difference

Work done

W = 96J

V = 16

W=Q×V

Q=W÷V

Q =  96 ÷ 16

Q =  6 Coulomb.

To know more about Potential Difference visit:

https://brainly.com/question/12198573

#SPJ9

Answer:

Explanation:

In mathematics, the common logarithm is the logarithm with base 10. It is also known as the decadic logarithm and as the decimal logarithm. Natural logarithm of 379 is 5.9375362050824 Decimal logarithm of the number 379 is 2.5786392099681 Sine of 379 is 0.9055655749933. Cosine of the number 379 is -0.42420630521841. Tangent of the number 379 is -2.1347291727006

The Common logarithm for the 379 using a scientific calculator is 2.58. It means that 2.58 is the value of [tex]log_{10}[/tex] ( 379 ).

[tex]log_{a}[/tex] ( x ) = [tex]log_{10}[/tex] ( x ) / [tex]log_{10}[/tex] ( a )

This is how it should be calculated using a scientific calculator if you want to find the value of x for a different base. The commonly used base is 10 because in olden days logarithmic tables were used instead of calculators.

In order to reduce the calculations to basic formats such as addition and subtraction, base 10 was used. So calculators were designed in such a way that if you use log of any number it is the value of log with a base of 10.

Therefore, the Common logarithm for the 379 using a scientific calculator is 2.58. It means that 2.58 is the value of [tex]log_{10}[/tex] ( 379 ).

To know more about Common logarithm

https://brainly.com/question/20785664

#SPJ1

A 30.0-mg oil drop carrying a charge of +3.2 μC passes undeflected through a region in which there is a uniform, constant electric field. The Electric field is mathematically given as

98 N/C

This is further explained below.

Generally, Generally, the equation for Electric field the is mathematically given as

q E=m g

Therefore

[tex]&\left(3 \times 10^{-6} \mathrm{C}\right) E=\left(30 \times 10^{-6} \mathrm{~kg}\right)\left(9.8 \mathrm{~m} / \mathrm{s}^2\right) \\[/tex]

E=98N/C

In conclusion, The force of gravity always pulls in a downward direction; hence, the electric field will be exerted in an upward direction. As a result, the value is positive.

Read more about gravity

https://brainly.com/question/4014727

#SPJ1

Potential energy of a child at the top is 490 J.

Potential energy, U = mgh

U = potential energy

m  = mass of an object, given = 25kg

g = acceleration due to gravity, given = 9.8 m/[tex]s^{2}[/tex]

h = height of an object, given = 2 meter

Put the values in potential energy formula, U = mgh

U = mgh

U = 25 × 9.8 × 2

U = 490 J

Hence, Potential energy of a child at the top is 490 J.

Potential energy is the  type of energy, which is product of mass of an object, acceleration due to gravity and height of an object where it is placed. Its S.I. unit is joule and is represented by J.

Learn more about potential energy here:- https://brainly.com/question/14427111

#SPJ1

Answer:

m V^2 / R = G M m / R^2

M = R V^2 / G            balancing forces

V = 2 pi R / T         speed of craft

M = 4 pi^2 R^3 / (G * T^2)       substituting for V

M = 4 pi^2 * 52E21 / (6.67E-11 * 1.30E7) = 39.5 * 52 / (6.67 * 1.3) * 10^25 kg

M = 2.37E27 kg

note mass of earth = 5.98E24 kg - should check mass obtained

The average acceleration during the time interval t=0 to t=10s is 1.67 m/s².

The average acceleration of an object is the rate of change of velocity of an object with time.

Mathematically, the average acceleration of an object is given as;

a = Δv/Δt

a = (v₂ - v₁)/(t₂ - t₁)

where;

From the graph,

the initial velocity at time of 0 second = 0 km/h

the final velocity at time of 10 seconds = 60 km/h = 16.67 m/s

the initial time = 0 s

the final time = 10 s

The average acceleration of the car is calculated as follows;

a = (16.67 m/s - 0 m/s) / (10 s - 0 s)

a = 1.67 m/s²

Thus, the average acceleration of the car increases with increase in the rate of change of displacement with time.

Learn more about average acceleration here: https://brainly.com/question/26246639

#SPJ1

Answer:

birr i am not smart i d know what to do

Explanation:

pls mark as brainliest

Answer:

I am not understanding your question

Answer:

a) V ≈ 125 m/s;  b) Δt = 13.24 s;  c) ΔS ≈ 1450 m

Explanation:

a) We have just to calculate the vector resultant.

V² = 106² + 66.2²

V² = 15618.44

V ≈ 125 m/s

b) The time of flight is equal to the time to reach the maximum height summed to the time to reach the land.

In vertical:

V = V₀ + a * t

V = 66.2 - g * t

0 = 66.2 - 9.8 * t

t ≈ 6.76 s

So: Δt = 13.24 s

c) In horizontal:

V = ΔS / Δt

106 = ΔS / 13.52  ⇒  ΔS = 106 * 13.52

ΔS = 106 * 13.52

ΔS = 1433,12

ΔS ≈ 1450 m

(a) Average speed is 42 km/h

(b) Average velocity is 31.21 km/h (25° S of E)

(c) Average speed and average velocity are 3.73 km/h and 0 km/h respectively.

The average speed is calculated by distance travelled divided by time. The distance travelled is 14.0 km and time taken for the trip is 20.0 min.

The time taken for the trip in hours = 20.0/60 = 0.33 hr

Average speed = 14.0/0.33 = 42 km/h

The displacement is the shortest distance between two points. For this trip the displacement is 10.3 km in the direction 25.0° south of east. Then the average velocity is calculated by change in displacement divided by time.

Average velocity = (10.3-0)/0.33 = 31.21 km/h (25° S of E)

Average speed of the total trip = (14 + 14)/7.5 = 3.73 km/h

Average velocity of the total trip = (Final position - Initial position)/time = (0 - 0)/7.5 = 0 km/h

To know more about average velocity here:

https://brainly.com/question/12984400

#SPJ1

9.14 s long it will take a cyclist to bring a bicycle with an initial speed of 12.8 m/s to a complete stop.

Depending on whether an object is moving much faster, slower, or in a different direction, its speed may change. Examples of acceleration include a falling apple, the moon orbiting the earth and a car which has stopped at a stop sign.

Uniform acceleration, non-uniform acceleration, and average acceleration are the three different forms of accelerated motions.

a = -1.4 m/s²

v[tex]_i[/tex] = 12.8 m/s²

v[tex]_f[/tex] = 0

Δt = ?

We use formula

a = v[tex]_f[/tex] - v[tex]_i[/tex]/t

-1.4 = 0 - 12.8/t

t = 9.14 s

To know more about Acceleration visit:

https://brainly.com/question/12550364

#SPJ9

Answer: The direction of the resultant can be determined by finding the angle that the resultant makes with either the north-south or the east-west vector. The diagram at the right shows the angle theta (Θ) marked inside the vector addition triangle. This angle theta is the angle that the resultant makes with west.

Explanation: Hope this helps.

Answer:

Magnitude=25.5    

Direction=-60.4

Explanation:

[tex]\sqr\sqrt{ x^{2} +y^{2} \\\\[/tex]=m

[tex]Tan^{-1} (y/x)[/tex] = D

This answer which is currently written is not complete because solving a vector problem, we should also mention the direction correctly, but here the direction is not mentioned.

A vector is a quantity or phenomenon that has two impartial houses, value and course. The term also denotes the mathematical or geometrical illustration of the sort of quantity. Examples of vectors in nature are pace, momentum, pressure, electromagnetic fields, and weight. A vector may be located in a square coordinate device, as illustrated here. The square coordinate notation for this vector.

vector, in physics, is a quantity that has each importance and course. it's far usually represented via an arrow whose direction is similar to that of the amount and whose period is proportional to the quantity's magnitude. although a vector has magnitude and direction, it does not have a function.

Learn more about vector problems here:-https://brainly.com/question/15519257

#SPJ1

A pot of water is heated using a camping stove. The stove supplies 115,000 J of energy to the 0.54 kg of water. Given that the specific heat.

If a plant's soil has too much water, the roots can rot, and the plant can't get enough oxygen from the soil. If there is not enough water for a plant, the nutrients it needs cannot travel through the plant. A plant cannot grow if it doesn't have healthy roots, so the proper balance of water is key when growing plants. Water level significantly affected seed germination and seedling establishment. The wet soil treatment germination rate (83%) was much higher than the waterlogged (56%) and submerged (44%) treatments.  As water emerges or evaporates between the plant's stomata, water is pushed up from the soil through the roots and into the plant. Water conveys with its minerals and nutrients from the soil that are vital for plant growth.

so we can conclude that A pot of water is heated using a camping stove. The stove supplies 115,000 J of energy to the 0.54 kg of water. Given that the specific heat.

Learn more about it water here:  https://brainly.com/question/1313076

#SPJ1

A geostationary orbit can be achieved only at an altitude very close to 35,786 kilometres (22,236 miles) and directly above the equator. This equates to an orbital speed of 3.07 kilometres per second (1.91 miles per second) and an orbital period of 1,436 minutes, one sidereal day.

Given data

*Alec is rising towards the surface of the water is u = 6.0 m/min

*The given distance is d = 8.4 m

The formula for the time taken by the Alec to rise is given as

Substitute the values in the above expression as

Hence, the time is taken by Alec to rise is t = 1.4 minutes

The Sun’s effect on Earth change if the Sun was half its mass, the pull of gravity from the Sun would only be half as strong and is denoted as option A.

This is referred to as the universal force of attraction which acts on all matters and is dependent on some parameters such as mass etc.

The increase in mass denotes a corresponding increase in gravity and vice versa which is therefore the reason why if the Sun was half its mass, then the pull of gravity from the Sun would only be half as strong.

Read more about Gravity here https://brainly.com/question/940770

#SPJ1

Answer:

A

Explanation:

you predicted it in the past and assumed the outcome of your result and they was a difference of 10 percent

If there are six water molecules, the following applies;

A molecule is the smallest particle of a specific element or compound that retains the chemical properties of that element or compound i.e. two or more atoms held together by chemical bonds.

Atoms of an element are usually shown in the chemical or molecular formula, which is a notation indicating the number of atoms of each element present in a compound.

According to this question, six water molecules are given as follows: 6H₂O

This means that there are 6 × 2 = 12 atoms of hydrogen and 6 × 1 = 6 atoms of oxygen in the 6 molecules of water.

Electrolysis is the chemical change produced by passing an electric current through a conducting solution or a molten salt.

If six molecules of water undergoes electrolysis, there would be 12 atoms of hydrogen and 6 atoms of oxygen.

Learn more about molecules at: https://brainly.com/question/19556990

#SPJ1

Answer:

Like trees, houses, and people, anything outside is at risk of being struck by lightning when thunderstorms are in the area, including cars. The good news though is that the outer metal shell of hard-topped metal vehicles does provide protection to those inside a vehicle with the windows closed.

Answer: Depends

Explanation:

You should be good if you have proper shelter and protection to maintain safety.

If it's hail, it's probably best to find shelter and I recommend putting a thick blanket on the windows so they don't burst.

Answer:

Explanation:

40 km/h

The Direction of the vector sum of the two vectors V and W is resulted as 240.84 m toward + x.

A vector is a quantity or phenomenon with independent components of magnitude and direction. The expression can also be used to describe a quantity's geometric or mathematical representation.

The following are the x and y axes for the supplied vector:

Vector V in x direction;

[tex]$$\begin{aligned}&\mathrm{V}_{\mathrm{x}}=\mathrm{V} \cos \theta \\&\mathrm{V}_{\mathrm{x}}=448 \cos \left(224^0\right) \\&\mathrm{Vx}=-322.26\end{aligned}[/tex]

Vector V in y direction;

[tex]\begin{aligned}&V_y=V \sin \theta \\&V_y=448 \times \sin 224^0 \\&V_y=-311.2\end{aligned}[/tex]

Vector W in x direction;

[tex]W_x = 336 \times cos(74.9^0)[/tex]

[tex]W_x = 81.86[/tex]

Vector W in y direction;

[tex]\begin{aligned}&\mathrm{W}_{\mathrm{y}}=336 \times \sin 75.9 \\&\mathrm{W}_{\mathrm{y}}=325.88\end{aligned}[/tex]

The resultant vector in the x direction is;

[tex]\begin{aligned}&\Sigma X=-322.26+81.86 \\&\Sigma X==-240.4\end{aligned}[/tex]

The resultant vector in the y direction is;

[tex]\begin{aligned}&\Sigma Y=-311.2+325.88 \\&\Sigma Y=14.68\end{aligned}[/tex]

The resultant vector is found as;

[tex]\begin{aligned}&\mathrm{R}=\sqrt{(-240.4)^2+(14.68)^2} \\&\mathrm{R}=240.84 \mathrm{~m}\end{aligned}[/tex]

Learn more about Vector

https://brainly.com/question/27787705

#SPJ9

A load of 24N must be placed on the spring balance for an extension of 8cm and the value of spring constant is calculated as 3N[tex]cm^{-1}[/tex].

The lengthened portion of an object, such as a spring, is known as its extension.

F = ke

The force in newtons is F. (N)

The “spring constant” (k) is expressed in newtons per meter (N/m).

E is the length in meters (m)

This equation is valid as long as the proportionality limit is not exceeded.

The extension for a particular spring and other elastic items is inversely proportional to the applied force. For instance, the extension doubles if the force does.

Kx = 15N

K = 15/x

= 15/5

K = 3N[tex]cm^{-1}[/tex]

dx = 8cm

The value of spring constant is = 3N[tex]cm^{-1}[/tex]

So, 3(8) = 24

To know more about spring force visit:

https://brainly.com/question/14655680

#SPJ9