The wire A and B are made of copper. Both w
wires are in
long but wire A is 1mm thick and wire B is 2mm thick, the
specific resistance is
a) more than A
b) more than B
c) same for both
d) cannot compared​

Please provide options.

Answer:

It requires a high initial investment

Explanation:

Answer:

15m/s

Explanation:

[tex]20m = \frac{1}{2} g {t}^{2} \\ t = 2s \\ t0 = 2s - 1s = 1s \\ vt + \frac{1}{2} g {t}^{2} = 20m \\ v \times 1s + \frac{1}{2} \times 10 \times 1 = 20 \\ v = 15[/tex]

Answer:

EMF = 1.1929 V

Explanation:

In this case we need to use the following expression:

EMF = B *ΔA / t   (1)

Where:

B: Magnetic field

ΔA: Difference of area of the balloon

t: time

To get the area, we have the innitial diameter of the balloon, and the expanded diameter when the balloon is blown up, so, assuming the circunference of the balloon, the area can be determined with:

A = π r²   (2)

So, let's calculate the Area of the balloon before and after the blown. Remember to use the units in meter (I just divided the diameter by 2 to get the ratio, and then divide by 100 to convert the units of cm to m)

A₁ = π * (0.105)² = 0.0346 m²

A₂ = π * (0.155)² = 0.0755 m²

Now that we have both areas, let's calculate ΔA:

ΔA = A₂ - A₁

ΔA = 0.0755 - 0.0346 = 0.0409 m²

Finally, we can determine the value of the EMF, using (1):

EMF = 1.4 * 0.0409 / 0.048

Hope this helps

Answer:

c.o Kg • ms 08

Explanation:

put all together

The answer is option c) 0 kg m/s

It is a property of moving body by virtue of its mass and motion and that is equal to the product of the body's mass and velocity

momentum = mass * velocity

since , momentum is a vector quantity

in order to calculate momentum we need one of the quantity to be vector since , mass can never be vector as it is a scaler quantity we need to use velocity ( vector quantity ) not speed ( scaler quantity ) as multiplication of two scalers can never give rise to a vector quantity

so, the answer is option c) 0 kg m/s

Learn more about momentum

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Answer:

The goal of physics is to understand how things work from first principles. ... Courses in physics reveal the mathematical beauty of the universe at scales ranging from subatomic to cosmological. Studying physics strengthens quantitative reasoning and problem solving skills that are valuable in areas beyond physics

Answer:

you get to understand why things happen this way

Explanation:

for example, are you not curious about why when standing in the bus and when the bus stops, you will might feel like you are going to fall ,

why does this happen because....

newton's laws explains it,

inertia causes you to be reluctant to change your initial state of motion due to your mass so you fall because you are still moving at the 'speed of the bus ' , something in like that

hope this helps,

please mark also

Answer:

A is the answer okkkkkkkkkkkkkkkk

Answer:

 θ =  3.19  arc second

Explanation:

The resolution of a telescope is given by the rayleigh criterion, which establishes that two objects are separated if the principal maximum of diffraction of one of them coincides with the first minimum of diffraction of the second object, based on this the solution is given by the first diffraction minimum, the a slit is

        a sin θ = m λ

with m = 1

in the case of circular apertures the equation must be found in polar coordinates, therefore a numerical constant is introduced

        a sin θ = 1.22 λ

Angles are measured in radians and in these experiments they are small

        sin θ = θ

       θ= 1.22  λ  / a

in this case a = 6.09 in, the wavelength is wrong = 550 10⁻⁹ m which is the maximum resolution of the human eye

l

et's reduce the magnitudes to the SI system

        d = 6.09‘  2.54 10⁻-2 m / 1 inch = 15.4686 10-2 m

let's calculate

       θ = 1.22 550 10-9 / 15.468 10-2

       θ = 15.5 10⁻⁶ rad

       rad = 2.06 105 s

       θ = 15.5 10⁻⁶ rad  2.06 105s/ 1 rad

       θ =  3.19   s

Answer:

Displacement = 70 m towards east

Explanation:

Displacement is the shortest distance between the two points.

Let us say that he starts at the point O and travels in a path ABC.

If we join the initial and final point of the path travelled by him, it will give the displacement of the man.

Distance from O to A = 40 m

Distance from A to B = 70 m

Distance from B to C = 40 m

Distance from O to A = Distance from B to C

We want the displacement which is distance between the points O and C

In rectangle opposite sides are equal. Hence Distance from O to C = Distance from A to B

Displacement = Distance from A to B

Hope it helps,

Please mark me as the brainliest.

Thank you

Answer:

Displacement = 70 m towards east

Explanation:

Answer:

Electrical energy this is because when the flashlight us turned on the chemical energy stored in the battery is converted to electrical energy that flows through the wire of the flashlight

Answer:

F ∞ r^4

Explanation:

I can't really write the equation here because its complex

Hope this helps:)

Answer:

5.51 m/s^2

Explanation:

Initial scale reading = 50 kg  

assume the greatest scale reading = 78.09 kg

Determine the maximum acceleration for these elevators

At rest the weight is = 50 kg

Weight ( F ) = mg = 50 * 9.81 = 490.5 N

At the 10th floor weight = 78.09 kg

Weight at 10th floor ( F ) = 78.09 * 9.81 = 766.11 N

F = change in weight

Change in weight( F ) = ma = 766.11 - 490.5 (we will take the mass as the starting mass as that mass is calculated when the body is at rest)

50 * a = 275.61

Hence the maximum acceleration ( a ) = 275.61 / 50 = 5.51 m/s^2

Answer:

work  done=Fs

Explanation:

F : force

s : displacement

by definition

Answer:

0.25 or 1/4

Explanation:

................

under this system all male citizens had equal political rights freedom of speech and the opportunity to participate directly in the political Arena

Answer:

Today, government in the United States is most similar to the Roman Republic because it is a representative democracy.

Although Athens is known as the world's first democracy, system that exist in United States today is most similar to Roman system.

Namely, Roman Republic was choosing its officials to represent them in the bodies such as Senate, which is also the case today with United States.

Explanation:

Answer:

A dribble ends when the player touches the ball with both hands simultaneously or permits the ball to come to rest in one or both hands. The ball being touched with both hands simultaneously (dribble with both hands) is a double dribble

Nothing in the rulebook that says a player cannot start a dribble with two hands. A dribble can end when touching both hands simultaneously, but a single dribble is OK as long as you catch the ball

Explanation:

Answer:

No, so it's false you're correct.

Hope this helped

Answer:

Energy of of Wave B is four times the energy of Wave A

Explanation:

As we know,  the energy carried by a wave is directly proportional to the square of the amplitude of the wave. Mathematically, this expression can be expressed as

[tex]E \alpha A^2[/tex]

Energy of wave A [tex]\alpha 1^2[/tex]

Energy of wave B [tex]\alpha 2^2[/tex]

Energy of wave A/Energy of wave B

[tex]= \frac{1^2}{2^2} \\= \frac{1}{4}[/tex]

This means that the Energy of of Wave B is four times the energy of Wave A

Answer:

Energy of of Wave B is four times the energy of Wave A

Explanation:

This question is incomplete, the complete question is;

An automobile tire is filled to a gauge pressure of 200 kPa when its temperature is 20°C (Gauge pressure is the difference between the actual pressure and atmospheric pressure.)

After the car has been driven at high speeds, the tire temperature increases to 55°C

(a) Assuming that the volume of the tire does not change and that air behaves as an ideal gas, find the gauge pressure of the air in the tire. (kPa)

(b) Calculate the gauge pressure if the tire expands so the volume of the enclosed air increases by 10 percent. (kPa)

Answer:

a) the gauge pressure of the air in the tire is 236 kPa

b) the gauge pressure if the tire expands so the volume of the enclosed air increases by 10 percent is 205.33 kPa

Explanation:

Given the data in the question;

Gauge pressure at 20°C = 200 kPa

Absolute pressure at 20°C is; p = 200 + 101.3 = 301.3 kPa

Initial temperature T = 20°C = 20 + 273 = 293 k

Final temperature T" = 55°C = 55 + 273 = 328 K

Now, at constant volume, P"/P = T"/T  

P"T = PT"

P" = PT" / T

P" = PT" / T

we substitute

P" = ( 301.3 × 328 ) / 293

P" = 98826.4 / 293

P" = 337.29

so Gauge pressure at 55°C is;

⇒ P" - 101.3

⇒ 337.29 - 101.3 = 235.99 ≈ 236 kPa

Therefore, the gauge pressure of the air in the tire is 236 kPa

b)

Final Volume V'' = V + 10% of V  

V" = V + 0.1V

V" = 1.1V

we know that;

P"V"/T" = PV/T

P" = P (T"/T)(V/V")

we substitute

P" = 301.3 (328 /293 )(V/1.1×V)

P" =  × 1/1.1 × V/V

P" = 337.29 × 1/1.1  

P" = 306.628 kPa

so, absolute pressure at 55°C = 306.628 - 101.3 = 205.33 kPa

Therefore, the gauge pressure if the tire expands so the volume of the enclosed air increases by 10 percent is 205.33 kPa

Answer:

in order of questions asked:

f

t

t

t

t

t

f

t

f

t

When air temperature falls, the air can hold more water vapor, this statement if false because air doesn't hold more water in this case.

Cloudy days tend to have a greater range of temperatures than clear days. This assertion is true.

Water vapor condenses when air temperature reaches the dew point. This assertion is true.

A cloud consists of billions of individual water droplets.  This assertion is true

Dust or other particles are needed for clouds to form. This assertion is true.

Only high clouds consist of ice crystals. This assertion is true.

Stratocumulus clouds rarely bring precipitation. This assertion is false.

Advection fog forms when warm humid air travels up a hillside and cools. True.

All precipitation falls from clouds. False.

Hail forms in cumulonimbus clouds with strong updrafts. True.

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Answer:

electric flux through the entire Gaussian surface will be positive ( + )

Explanation:

The dipole is surrounded by Gaussian surface of charge q

The electric flux will be  positive

i.e.  Ф = E. ds   since the surface is a close one the direction of the area outwardly will be positive . therefore the angle between  E and A < 90°

Hence the  electric flux through the entire Gaussian surface will be positive

Answer:

q = 1.84×10^-8coulombs

Explanation:

Surface area = 4πr²

r is the distance

1.2 = 4(3.14)r²

1.2 = 12.56r²

r² = 1.2/12.56

r² = 0.0956

r = √0.0956

r = 0.309m

Get the charge C

V = kq/r

536 = 9.0×10^9q/0.309

536×0.309 = 9×10^9q

165.73 = 9×10^9q.

q = 165.73/9×10^9

q = 1.84×10^-8coulombs

Answer:

Follows are the solution to this question:

Explanation:

The magnetic force is parallel to a  [tex]\bar{V} \times \bar{B}[/tex] axis, through right law. The direction would be in a reverse way for a positive particle. The gravitational flux is upward.

1) Its magnet strength will be directed westward.

2) The [tex]\bar{V} \times \bar{B}[/tex] path is parallel to the east. The permanent magnet is oriented against the south so because the object is considered impolite.

3) Its gravitational field of the velocity v of the object is zero. Thus no force was its solution.

4) The magnetic field and velocity are all on the same track. The magnetic strength is also zero. Consequently, the answer is no power.

5) Its gravitational field is to the south.

6) Its magnetic field, as well as the speed, are different. Which magnet strength is also zero. Consequently, no power is the answer.

7) Accessible in French only. The  [tex]\bar{V} \times \bar{B}[/tex] direction parallel to the east. Its magnetic energy is guided west because the particle is charged negatively.

8) Unless the particle velocity is 0, the magnetic strength is 0. Consequentl, no power is the response.

9) Its magnet power is from the north.

10) Another one of these: The  [tex]\bar{V} \times \bar{B}[/tex]  is parallel to the west. Its gravitational field is oriented to the east as the object is negatively charged.

11) The Pope said the following: The [tex]\bar{V} \times \bar{B}[/tex]  direction is parallel to the south. The gravitational fluid is transmitted towards the North because a particle is considered impolite.

12) The gravitational field is from the east.

Answer:

The mole (symbol: mol) is the unit of measurement for amount of substance in the International System of Units (SI). It is defined as exactly 6.022 140 76 × 1023 particles, which may be atoms, molecules, ions, or electrons.

Explanation:

Answer:

B) 8480 J

Explanation:

From the question,

The work required to turn the Crank in on turn is

W = 2πT................ Equation 1

Where W = work, T = torque.

Given: T = 4.50 Nm, π = 3.14

Substitute into equation 1

W = 4.5(2)(3.14)

W = 28.26 J per turn.

For 300 full tern,

W = 28.26×300

W = 8476 J

Hence,

W≈ 8480 J.

The right answer is B) 8480 J

Answer:

air and oxygen makes in bigger

Explanation:

Answer:

The angle formed between the line of pull of a muscle and the longitudinal axis of the bone in which the muscle is acting. The line of pull is usually indicated by the joint angle. It affects the strength of muscle action; at only certain angles of pull can a muscle exert maximal tension.

Explanation:

hope this helps sorry if it doesn't have a good rest of your night :) ❤

Answer:

okay I'm a bit confused but I like the little emoji dudw

Answer:

?

Explanation:

.

Answer:

Tangential speed or Rotational speed