please answer this question ​

Answer:

The resistance of the inductor at resonance is 258.76 ohms.

Explanation:

Given;

resistance of the resistor, R = 305 ohm

capacitance of the capacitor, C = 1.1 μF = 1.1 x 10⁻⁶ F

inductance of the inductor, L = 42 mH = 42 x 10⁻³ H = 0.042 H

At resonance the inductive reactance is equal to capacitive reactance.

[tex]\omega L = \frac{1}{\omega C}\\\\2\pi F_0 L = \frac{1}{2\pi F_0 C}\\\\F_0 = \frac{1}{2\pi\sqrt{LC} }[/tex]

Where;

F₀ is the resonance frequency

[tex]F_0 = \frac{1}{2\pi\sqrt{LC} } \\\\F_0 = \frac{1}{2\pi\sqrt{(0.024)(1.1*10^{-6})} }\\\\F_0 =980.4 \ Hz[/tex]

The inductive reactance is given by;

[tex]X_l = 2\pi F_0 L\\\\X_l = 2\pi (980.4)(0.042) \\\\X_l = 258.76 \ ohms[/tex]

Therefore, the resistance of the inductor at resonance is 258.76 ohms.

Answer:

0.01 s

Explanation:

The following data were obtained from the question:

Mass (m) of baseball = 0.15 kg

Initial velocity (u) = +26 m/s

Final velocity (v) = 0 m/s

Force (F) applied = –390 N

Time (t) =?

Next, we shall determine the acceleration of the baseball. This can be obtained as follow:

Mass (m) of baseball = 0.15 kg

Force (F) applied = –390 N

Acceleration (a) of baseball =?

F = ma

–390 = 0.15 × a

Divide both side by 0.15

a = –390/0.15

a = –2600 m/s²

Finally, we shall determine the time taken for the baseball to stop. This can be obtained as follow:

Initial velocity (u) = +26 m/s

Final velocity (v) = 0 m/s

Acceleration (a) = –2600 m/s²

Time (t) =?

v = u + at

0 = 26 + (–2600 × t)

0 = 26 – 2600t

Collect like terms

0 – 26 = – 2600t

– 26 = – 2600t

Divide both side by – 2600

t = –26 / –2600

t = 0.01 s

Thus, it will take 0.01 s for the baseball to stop.

Answer:

0.01 s

Explanation:

The answer above is correct.

Answer:

The lens is a concave lens

Explanation:

In concave lens, the image formed is erect. diminished and virtual. The more the distance of the object from the mirror, the more diminished the image formed will be. Concave lens are used in binoculars and telescopes and are installed before or in the eye piece to enable a clear focus.

Answer:

Average force exerted on car = 250,000 N or 250 KN

Explanation:

Given:

Initial speed u = 20 m/s

Final speed v = 0 m/s

Total distance covered = 1.2 m

Find:

Average force exerted on car

Computation:

v² = u² + 2as

0² = 20² + 2(a)(1.2)

a = -166.67 m/s² or 166.67 m/s²

Average force exerted on car = Ma

Average force exerted on car = (1,500)(166.67)

Average force exerted on car = 250,000 N or 250 KN

Answer:

Explanation:

The modern United Kingdom and France, by virtue of most government power being held by the central, national government,

Answer:

The answer Iswhat the other person said

Explanation:

Answer:

Vf = 90km/h

      (90*1000)/3600 ==>

      (90*10)36

Vf = 25m/s

, Vi = 60km/h

         (60*1000)/3600

          16.666m/s =>16.7m/s

          , a = 4m/s^2

t = ?

Explanation:

Vf = Vi + at

25m/s = 16.7m/s +4m/s^2(t)

25m/s - 16.7m/s = 4m/s^2(t)

8.3m/s = 4m/s^2(t)

8.3m/s/4m/s^2 = t

2.075s = t => 2.1s

Answer:

2 km due south.

Explanation:

We need to find the displacement of 4km south,2 km north, 5km south, and 5 km north.

Let south is negative direction and north is positive direction.

The shortest path covered by an object is called its displacement.

D = -4+2-5+5

D = -2 km

So, the displacement is 2 km and it is in south direction.

Answer:

1.10m/s

2.0.1m

3.5Hz

Explanation:

v=velocity, f=frequency and T=wavelength

1.v=ft

v=2x5

=10m

2.v=ft

100=1000T

divide both sides by 1000

T=0.1m

3.v=fT

25=5f

divide both sides by 5

f=5Hz

Answer:

A. 1.

B. 5.

C. 3.

D. 4.

E. 6.

F. 4.

Explanation:

Answer:

Since the object is floating, the buoyant force equals the weight of the water displaced:

W = d g v  where d is the density of water and v = V/2 where v is the volume of the water displaced   and v = V/2 where V is the volume of the object.

W = 1000 kg/m^3 * 9.8 m/s^2 * (3.5 /2 m^3)

W = 17150 kg m / s^2 = 17150 N

When an object floats with half its volume beneath the surface of the water. If the volume of the object is 3.5 m,then the weight of the object would be 17167.5 N if the density of water is 1000 kg/m3

It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.

The density is the reciprocal of the specific volume of any substance.

The mathematical formula for density is given below

ρ =m /V

where ρ is the density of the substance

m is the mass of the substance

V is the volume of the substance

As given in the problem an object floats with half its volume beneath the surface of the water. The volume of the object is 3.5 m

The density of water is 1000 kg/m3​

According to the Archimedes principle, the buoyancy force acting on  the floating object is equal to the weight of the fluid displaced by it

W =  ρ g V

Given the object floats with half its volume beneath the surface of the water means the volume of the water displaced is half of the volume of the object

V=3.5/2 m³

W = 1000×9.81×3.5/2

   = 17167.5 N

Thus, the weight of the object is 17167.5 N

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Answer: synthesis

Explanation:

Chemical reaction which Brianna is explaining is synthesis  reaction as she is making use of various colors to make a sculpture of horse .

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

Learn more about chemical reactions,here:

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Answer:

yes

Explanation:

Answer:

Yes - si.

Explanation:

Answer:

yes we should use less energy

Answer:

If N is the number of forces acting on a body, the net force formula is given by, FNet = F1 + F2 + F3

Explanation:

Answer: Left cheek from the sun

Explanation:

Answer:

Electromagnetic waves

Electromagnetic waves bring energy into a system by virtue of their electric and magnetic fields. These fields can exert forces and move charges in the system and, thus, do work on them. However, there is energy in an electromagnetic wave itself, whether it is absorbed or not.

So the answer is B electrical energy

Thank you and please rate me as brainliest as it will help me to level up

Answer:

Wm = 97.2 [N]

Explanation:

We must make it clear that mass and weight are two different terms, the mass is always preserved that is to say this will never vary regardless of the location of the object. While weight is defined as the product of mass by gravitational acceleration.

W = m*g

where:

m = mass = 60 [kg]

g = gravity acceleration = 10 [m/s²]

But in order to calculate the weight of the body on the moon, we must know the gravitational acceleration of the moon. Performing a search of this value on the internet, we find that the moon's gravity is.

gm = 1.62 [m/s²]

Wm = 60*1.62

Wm = 97.2 [N]

Answer:

Explanation:

initial momentum = .36 kg.m.s⁻¹

negative impulse = force x time = .02 x 12 = .24 kg.m.s⁻¹

final momentum - initial momentum = impulse

final momentum = initial momentum + impulse

= .36 - .24

= .12 kg.m.s⁻¹

Answer:

t think 90

Explanation:

m=f/a

=45kg m/s/0.5m/s

450kg/5

90kg

Answer:

i think issa uh.. i think issa carrot

Explanation:

Answer:

The end that faces the north is called the north-seeking pole, or north pole, of the magnet. The other end is called the south pole. When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges.

Explanation:

Answer:

North pole, south pole

Explanation:

The end of the pole that faces the north is the north pole, and the other end is called the south pole.

Opposite poles attract (North-South), but like poles repel (South-South, North-South).

Answer:

ok

Explanation:

Answer:

0.126J

Explanation:

To calculate the potential energy of the system U:

Since the charges are the same, and the charges between them are the same.

q1 =q2 = q3 are the charges, and r1=r2=r3 is the distance between their centres.

q = 1.45 μC

r = 0.450 m

1/4πE°(3q^2/r)......... 1

1/4πE° = 9 × 10^9 N⋅m^2⋅C−2,

Substitute the values into equation 1

= 9 × 10^9 N⋅m^2⋅C−2 × {3* (1.45×10^-6)^2/0.450m}

= 9 × 10^9 N⋅m^2⋅C−2×{3*2.1025^-12/0.450m}

= 9 × 10^9 N⋅m^2⋅C^−2×{6.3075^-12}/0.450m

= 9 × 10^9 N⋅m^2⋅C^−2 × 1.401^-11

= 0.12615J

= 0.126J

Answer:

The answer is b: mechanical to electrical

Answer:

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the answer is a.

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Explanation: