when three resistors are connected in parallel and one is removed, what happens to the resistance in the circuit?

Light of wavelength 540nm is incident on a slit of width 0.150mm and a diffraction pattern is produced on a screen that is 2.00m from the slit. The width of the central bright fringe is approximately 7.2 x \(10^{-3}\) meters.

To determine the width of the central bright fringe in a diffraction pattern, we can use the formula for the single-slit diffraction pattern:

w = (λ * L) / (2 * d)

Where:

w is the width of the central bright fringe,

λ is the wavelength of light (540 nm = 540 x \(10^{-9}\) m),

L is the distance from the slit to the screen (2.00 m),

and d is the width of the slit (0.150 mm = 0.150 x \(10^{-3}\) m).

Substituting the given values into the formula:

w = (540 x \(10^{-9}\) m * 2.00 m) / (2 * 0.150 x \(10^{-3}\) m)

Calculating the expression:

w = 7.2 x \(10^{-3}\) m

The width of the central bright fringe is approximately 7.2 x \(10^{-3}\) meters.

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Answer:

wool

Explanation:

Wool comes from sheep.  Rayon, candles (the paraffin type) and petrochemicals all come from petroleum.

Answer:

it has nucleus

Explanation:

Giardia is a microscopic single celled prokaryotic organism that causes giardiasis. Giardiasis is an intestinal Infection in humans and dogs which is caused by giardia. It is an eukaryotic organism that have nucleus and nuclear membrane but it lacks other ORGANELLES that are present in Eukaryotic organisms. It causes diarrhoea in humans and woman's can get infected from dogs.

Answer:

The answer is nucleus.

Prokaryotes dont have a nucleus, but this Giardia is a eukaryotic organism so it has a nucleus.

Explanation:

Answer:

451.13 J/kg.°C

Explanation:

Applying,

Q = cm(t₂-t₁)............... Equation 1

Where Q = Heat, c = specific heat capacity of iron, m = mass of iron, t₂= Final temperature, t₁ = initial temperature.

Make c the subject of the equation

c = Q/m(t₂-t₁).............. Equation 2

From the question,

Given: Q = 1500 J, m = 133 g = 0.113 kg, t₁ = 20 °C, t₂ = 45 °C

Substitute these values into equation 2

c = 1500/[0.133(45-20)]

c = 1500/(0.133×25)

c = 1500/3.325

c = 451.13 J/kg.°C

Given parameters:

Current of CD player  = 0.1A

Source Voltage = 4V

Unknown:

Resistance  = ?

Solution:

Based on Ohm's law;

           V  = I R;

  V = voltage

   I = current

   R = resistance

Input the parameters and solve;

          4 = 0.1 x R

              R  = \(\frac{4}{0.1}\)   = 40ohms

The resistance of the CD player is 40ohms

The volume of the bubble just before the surface is 4 cm^3.

V1=volume of the initial stage

P2= pressure at the final stage

V2= volume at the final stage

=(1×4)/1

=4cm³

Thus , we can conclude that the volume of the bubble just before the surface of water is 4cm³.

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Answer:

\(mgh = \frac{1}{2} m {v}^{2} \\ v = \sqrt{2gh} \\ = \sqrt{2 \times 9.8 \times 10} \: m. {s}^{ - 1} \)

Answer:

Other materials from which statues can be sculpted include: contemporary media such as scrap metal, plastic, aluminium, concrete or "found" items, although this latter form of junk art is usually limited to abstract rather than representational works.

Answer:

Explanation:

2) From F=ma

Force =15×40=600N or kgm/s2

3)From the same equation making acceleration the subject of the formula will give

a=f÷m

=24÷4=6m/s2

4)m=f÷a

=45÷15=3kg

The potential difference when a charge goes from 10m to 16m is approximately -1.6875 x \(10^9\) V. The negative sign indicates a decrease in potential as the charge moves farther away from the uniformly charged shell.

To calculate the potential difference between two points, we can use the formula:

V = k * (Q / r)

V is the potential difference

k is the electrostatic constant (k = 9 x \(10^9 N m^2/C^2\))

Q is the charge

r is the distance

In this case, the charge (Q) is 5C and the distances (r) are 10m and 16m.

First, let's calculate the potential at the initial point (10m):

V_initial = k * (Q / r_initial)

V_initial = (9 x \(10^9 N m^2/C^2\)) * (5C / 10m)

V_initial = 4.5 x \(10^9\) V

Next, let's calculate the potential at the final point (16m):

V_final = k * (Q / r_final)

V_final = (9 x \(10^9 N m^2/C^2)\) * (5C / 16m)

V_final = 2.8125 x\(10^9\) V

Finally, we can calculate the potential difference (ΔV) between the two points:

ΔV = V_final - V_initial

ΔV = 2.8125 x \(10^9\) V - 4.5 x\(10^9\) V

ΔV = -1.6875 x \(10^9\) V

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Answer:

The vibrational frequency of the rope is 5 Hz.

Explanation:

Given;

number of complete oscillation of the rope, n = 20

time taken to make the oscillations, t = 4.00 s

The vibrational frequency of the rope is calculated as follows;

\(Frequency = \frac{number \ of \ complete \ vibrations}{time \ taken} \\\\Frequency = \frac{20 }{4 \ s} \\\\Frequency = 5 \ Hz\)

Therefore, the vibrational frequency of the rope is 5 Hz.

Answer:

ysyywhwywywyyeueueuwieheheuhrr9

Option (a) "16" is the best prediction for the number of nails the electromagnet with 48 coils will pick up.

To determine the best prediction for the number of tacks the electromagnet with 48 coils will pick up, we need to examine the relationship between the number of coils and the number of tacks picked up by the electromagnets. From the results given, it appears that as the number of coils increases, the number of tacks picked up also increases.

Based on this relationship, it's reasonable to predict that the electromagnet with 48 coils will pick up more tacks than the one with 36 coils. Given that the electromagnet with 36 coils picked up 13 tacks, a reasonable prediction for the number of tacks the electromagnet with 48 coils will pick up would be between 13 and 20.

In conclusion, a prediction of 16 or 17 tacks for the electromagnet with 48 coils is likely to be a good estimate, given the data provided.

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Answer: The answer is (16)                                                    

Answer:

hey!!

Newton's second law of motion, also known as the law of acceleration, explains the relationship between an object's mass, the applied force, and its resulting acceleration. The law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, Newton's second law can be expressed as:

F = ma

Where:

F represents the net force acting on the object,

m represents the mass of the object, and

a represents the acceleration produced by the force.

In simpler terms, Newton's second law states that the force acting on an object determines how much it accelerates. A larger force applied to an object will result in a greater acceleration, while a smaller force will produce a smaller acceleration. Additionally, if the mass of the object is increased, the same force will produce a smaller acceleration, and vice versa.

This fundamental law of motion helps us understand how forces and masses interact to produce motion. It is widely applicable and plays a crucial role in fields such as physics, engineering, and everyday life when studying the behaviour of objects in motion.

i hope this helps you :)

Answer:

715.4 N

Explanation:

W = mg

= 73 kg*9.8m/s²

= 715.4 N

Answer:

73 kgf =  715.88545 N

Explanation:

To simply convert from any unit into newtons, from 73 kilogram-force, just multiply by the conversion value in the right column in the table below.

73 kgf x 9.80665 [ (N) / (kgf) ] = 715.88545 N

The earliest time after the blοck is released when its kinetic energy is exactly half οf its pοtential energy is 0.35 secοnds.

Pοtential energy is a fοrm οf energy assοciated with the pοsitiοn οr cοnfiguratiοn οf an οbject within a system. It is the energy that an οbject pοssesses due tο its pοsitiοn relative tο οther οbjects οr fοrces acting upοn it.

In simple harmοnic mοtiοn, the kinetic energy (K) and pοtential energy (U) οf a blοck attached tο a hοrizοntal spring are related by the equatiοn:

K = (1/2) U

Given the frequency (f) οf the blοck is 0.72 Hz, we can determine the angular frequency (ω) using the fοrmula:

ω = 2πf

ω = 2π * 0.72

≈ 4.52 rad/s

The periοd (T) οf the blοck's mοtiοn can be calculated as:

T = 1/f

T = 1/0.72

≈ 1.39 s

Since the blοck is released frοm rest, at t = 0 s, the pοtential energy (U) is at its maximum while the kinetic energy (K) is zerο.

Tο find the earliest time when K is exactly half οf U, we need tο determine the time when the blοck has mοved a quarter οf a periοd and has reached the pοint where K = (1/2) U.

A quarter οf a periοd is given by T/4:

t = T/4

t = (1.39 s) / 4

t ≈ 0.35 s

Therefοre, the earliest time after the blοck is released when its kinetic energy is exactly half οf its pοtential energy is 0.35 secοnds.

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Answer:

Explanation:

Eclipse happens when a large object gets in the way of another object; casting its shadow over it.

Solar eclipse happens when the moon get in between the sun and earth. It blocks sun light and causes its shadow over the sun as seen from earth.

Lunar eclipse happens when the earth is in between the sun and moon. It blocks sun light from reflecting off the moon surface so there is a shadow on the moon as seen from earth.

(a) a strip welded together from brass on one side and steel on the other Stripe made of two metals.

(b) It flexes.

(c) These metals expand in different ways.

A bimetallic strip is made up of two distinct metals that have been welded together. Different metals expand at various rates when heated. It bends as a result of heat expansion. Thermal expansion refers to the tendency of matter to alter form, area, and volume in reaction to temperature changes.

Because the water vapor flowing out of the nozzle has expanded and cooled, he may hold his palm a few inches above the nozzle.

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9.8 J of work done is required to launch the item (Option C).

To determine the work done in launching the object, we can use the formula:

Work = Force x Distance x Cos(theta)

where theta is the angle between the force vector and the direction of motion. In this case,

since the force is applied in the same direction as the motion of the object, theta is 0 degrees, and cos(theta) is 1.

Substituting the given values, we get:

Work = 19.6 N x 0.50 m x 1 = 9.8 J

Therefore, the work done in launching the object is 9.8 J (Option C).

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Complete question:

Question asked: how much work is done in launching the object?

Information in the passage included: 1.00 kg object initially at rest. The student applies a force of 19.6 N through a distance of .50 m to propel the object straight upward.

The statement is true. For constant-pressure operation of a plate-and-frame filter, the volume of the filtrate is proportional to the elapsed time.

For constant-pressure operation of a plate-and-frame filter, the volume of the filtrate is proportional to the elapsed time. This is because in constant-pressure filtration, the pressure difference across the filter cake is kept constant, and the rate of filtration is mainly determined by the resistance of the filter cake to the flow of liquid.

As the filtration proceeds, the filter cake grows thicker and more resistant to the flow of liquid, which causes the rate of filtration to decrease. However, the volume of the filtrate continues to increase with time, since the liquid that has already passed through the filter cake is not affected by its resistance.

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Answer: 5 = straight, constant

Answer: 6 = unbalanced, velocity

Explanation:

If a question says "at what point does the ball stop?", it means we need to find the position of the ball when its final velocity is equal to 0. It can be calculated using the equation of kinematics as follows :

d = ut + (1/2) at²

and

v²-u²=2ad

Where, u is initial velocity, v is final velocity, a is acceleration, t is time and d is displacement.

Answer:

The mass of the block of material is 3 x 10³⁷ g/mol

The charge of the material is  4.8 x 10⁸ C

Explanation:

Given;

number of protons of the material, P = 3 x 10²⁷

number of neutrons in the material, N = 3 x 10³⁷

number of electrons in the material, E =  3 x 10²⁷

The mass of the block of material is calculated as follows;

M = P + N

M =  3 x 10²⁷ +  3 x 10³⁷

M =  3 x 10³⁷ g/mol

The charge of the material is calculated as follows;

charge of 1 electron = 1.6 x 10⁻¹⁹ C

charge of  3 x 10²⁷ electrons =  3 x 10²⁷ electrons   x   1.6 x 10⁻¹⁹ C

                                                = 4.8 x 10⁸ C

Answer:

speed is distance covered by body at certain or per time.

SI unit m/s

formula:

speed =distance covered/time taken