how are rotation curves of spiral galaxies determined for distances beyond where starlight can be detected?

R = 9.99 kΩ

The time constant (τ) of the circuit is given by τ = RC, where R is the resistance and C is the capacitance.

The potential difference across the capacitor at time t is given by V(t) = V0 e^(-t/τ), where V0 is the initial potential difference.

Using the given values, we can calculate τ:

τ = RC = (4.97 s) / ln[(93.5 V - 10.1 V) / 93.5 V] * 571×10^-6 F = 6.16 kΩ * F

Since we are given the capacitance, we can solve for the resistance:

R = τ / C = (6.16 kΩ * F) / 571×10^-6 F = 10.8 kΩ

Therefore, the resistance of the resistor is 10.8 kΩ.

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Answer:

1 can damage  chromosomes  

2 reduction in white blood cells ( will recover In Couple of days )

3  sickness

4 Temporary Reduction of Resistance.

Have a great Day!!

Answer:

true

Explanation:

as long as it is the right conductive material

The near point of the machinist with the eyeglasses  is 45.45 cm.

The near point is the closest distance at which an individual can see an object clearly without any visual aid, such as glasses or contact lenses. It varies depending on the individual's age and visual acuity.

Near point = 1 / (1 / Near point without eyeglasses + Power of lenses)

Plugging in the given values:

Near point = 1 / (1 / 25 cm + 2.16 diopters)

Near point = 1 / (0.04 diopters + 2.16 diopters)

Near point = 1 / 2.2 diopters

Near point = 0.4545 meters or 45.45 cm

This means that the machinist can see objects clearly at a distance of 45.45 cm or closer with the eyeglasses.

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By ideal gas approximation, the final pressure is 75.76 atm.

We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation

P . V = n . R . T

where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

From the question above, we know that

P1 = 50 atm

T1 = 330 K

T2 = 500 K

When the initial and final volume is the same, we can use the ratio of pressure and temperature as

P1 / P2 = T1 / T2

50 / P2 = 330 / 500

P2 = 50 x 500 / 330

P2 = 75.76 atm

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On a separate planet from Earth, your mass would be the same but your weight would be different due to the gravitational pull of the planet.

W = m g

W= Weight

m = Mass

g stands for gravitational acceleration.

The amount of substance in a body is measured by its mass. It is independent of all outside variables. Hence, no outside influences have an impact on its worth.

W ∝ g

As you can see, weight varies according to the force of gravity pushing on the body. A force of gravity is another name for weight. On earth, g has a different value than it does on other planets.

Gravity is a fundamental force of nature that exists between any two objects with mass or energy. It is responsible for the attraction between objects, such as planets, stars, and galaxies, and plays a crucial role in the structure and dynamics of the universe. According to the theory of general relativity, gravity is the curvature of spacetime caused by the presence of mass and energy. This means that objects with mass or energy create a distortion in spacetime that causes other objects to be attracted toward them. The strength of the gravitational force depends on the mass and distance between the objects, with larger masses and shorter distances resulting in stronger gravitational attraction.

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Answer:

Well, I know basketball is one. Also, Track and Field and tennis

Answer:

(below answer)

Explanation:

Suppose we want to know what the Sun is made of. What should we do? Compare the wavelengths of lines in the Sun's spectrum to the wavelengths of lines produced by chemical elements in the laboratory.

The speed with which the mass which is dropped hits the ground is calculated to be 20 m/s.

The mass dropped from certain height is of 5 kg.

The height from which the mass is dropped is 20 m.

As the ball is dropped from certain height u = 0.

From the equations of kinematics, we know, v² - u² = 2 a s

where, v is the final velocity

u is the initial velocity

a is acceleration due to gravity

s is the height

Making v as subject, we have,

v² = u² + 2 a s

v = √(u² + 2 a s) = √(0+ 2 × 10 ×20) = 20 m/s

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Answer:

When viewed from above, the current in the coil should point towards the top-right corner of the picture.

Explanation:

The current in this coil have only two possible directions: clockwise or counter-clockwise. However, since the diagram shows the coil from above, not from a cross-section, just saying clockwise or counter-clockwise might be ambiguous. The statement that the current is directed towards the top-right corner of the picture is equivalent to saying that when viewed from the lower-right corner of this diagram, the current in the coil is moving clockwise.

Note that at the center of this picture, the current is parallel to the magnetic field- there will be no force on the coil at that position. On the other hand, (also when viewed from above,) at the top-right corner and the lower-left corner of the coil, the current in the coil will be perpendicular to the magnetic field. That's where the force on the coil will be the strongest.

With that in mind, apply the right-hand rule to find the direction of the force on the coil in each of the two possibilities.

Assume that when viewed from above, the current is flowing towards the top-right corner of the picture. Consider the wire near the top-right corner of this coil (as viewed above on this picture.) The current will be going into the picture into the magnetic field. By the right-hand rule, the current on the wire near that point should be pointing towards the bottom of this picture. (Point fingers on the right hand in the direction of the current \(I\). Rotate the right hand such that when curling the fingers, they point in the direction of the magnetic field \(B\). The direction of the right thumb should now point in the direction of the force on the wire \(F\).)

Based on the same assumption, the current in the wires near the bottom left corner of this coil will be pointing out of the picture. By the right hand rule, the magnetic force on the coil in that region should be pointing towards the top of this picture. Combing these two forces, the coil would indeed be rotating around the center of this picture in the direction shown in the diagram.

It can also be shown that if the current points towards the bottom left corner of the picture when viewed from above, the coil will be rotating about the center of this picture in the opposite direction.

Answer:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.

Coefficient of friction, ratio of the frictional force resisting the motion of two surfaces in contact to the normal force pressing the two surfaces together. It is usually symbolized by the Greek letter mu (μ). Mathematically, μ = F/N, where F is the frictional force and N is the normal force.

Initial velocity = zero (i.e., free fall)

Final velocity = 30m/s

Acceleration due to gravity = 10m/s²

For a body falling freely under the action of gravity, g is taken positive\(.\)

◈ First equation of kinenatics :

⇒ v = u + gt

⇒ 30 = 0 + 10t

⇒ t = 30/10

⇒ t = 3s

Hence, object will attain a speed of 30m/s after 3s.

Answer:

θ = 17.67°

Explanation:

The grating equation can be used here to find the angle. The grating equation is given as follows:

\(m\lambda = dSin\ \theta\)

where,

m = order = 2

d = 3.88 x 10⁻⁶ m

λ = wavelength of light = 589 nm = 5.89 x 10⁻⁷ m

θ = angle = ?

Therefore, using these values in the equation, we get:

\((2)(5.89\ x\ 10^{-7}\ m) = (3.88\ x\ 10^{-6}\ m)Sin\theta \\Sin\theta = \frac{(2)(5.89\ x\ 10^{-7}\ m)}{(3.88\ x\ 10^{-6}\ m)}\\\\\theta = Sin^{-1}(0.3036)\)

θ = 17.67°

Answer:17.67

Explanation:

Explanation:

it loses air pressure...

and low pressure can result in tire blowouts which can cause lost of control of your vehicle

The cooling rate of the object is 0.054.

Let's find the cooling rate (k) of an object using the given information. Ts = 10 °CTo = 110 °CT1 = 35 °Ct2 = 25 minutes. Now, the given formula is T = Ts + (To - Ts) e ^ -kt. Here, we know that the temperature drops from 110°C to 35°C, which is 75°C in 25 minutes. Now, we will substitute the values in the formula as follows:35 = 10 + (110 - 10) e ^ (-k × 25) => (35 - 10) / 100 = e ^ (-k × 25) => 25 / 100 = k × 25 => k = 0.054. Therefore, the cooling rate of the object is 0.054. Hence, option A is correct.

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Answer:

The Earth spins on its axis once a day.

Explanation:

In simple words,The Earth revolves on its axis once every 24 hours and circles the sun once every 365 days. The Earth's rotation on its axis, not its orbit throughout the sun causes day as well as night. The word 'one day' refers to the period it requires the Earth to spin entirely on its axis, which involves both day as well as night.

Answer:

1. Voltage across 600 pF is 10 V.

2. Voltage across 300 pF is 20 V.

3. Voltage across 200 pF is 30 V.

Explanation:

We'll begin by calculating the total capacitance of capacitor. This can be obtained as follow:

Capicitance 1 (C₁) = 600 pF

Capicitance 2 (C₂) = 300 pF

Capicitance 3 (C₃) = 200 pF

Total capacitance (Cₜ) =?

1/Cₜ = 1/C₁ + 1/C₂ + 1/C₃

1/Cₜ = 1/600 + 1/300 + 1/200

1/Cₜ = 1 + 2 + 3 / 600

1/Cₜ = 6/600

1/Cₜ = 1/100

Cₜ = 100 pF

Next, we shall convert 100 pF to Farad (F). This can be obtained as follow:

1 pF = 1×10¯¹² F

Therefore,

100 pF = 100 pF × 1×10¯¹² F / 1 pF

100 pF = 1×10¯¹⁰ F

Thus, 100 pF is equivalent to 1×10¯¹⁰ F.

Next, we shall determine the charge. This can be obtained as follow:

Voltage (V) = 60 V

Capicitance (C) = 1×10¯¹⁰ F

Charge (Q) =?

Q = CV

Q = 60 × 1×10¯¹⁰ F

Q = 6×10¯⁹ C

1. Determination of the voltage across 600 pF.

Capicitance 1 (C₁) = 600 pF = 6×10¯¹⁰ F

Charge (Q) = 6×10¯⁹ C

Voltage 1 (V₁) =?

Q = C₁V₁

6×10¯⁹ = 6×10¯¹⁰ × V₁

Divide both side by 6×10¯¹⁰

V₁ = 6×10¯⁹ / 6×10¯¹⁰

V₁ = 10 V

2. Determination of the voltage across 300 pF.

Capicitance 2 (C₂) = 300 pF = 3×10¯¹⁰ F

Charge (Q) = 6×10¯⁹ C

Voltage 2 (V₂) =?

Q = C₂V₂

6×10¯⁹ = 3×10¯¹⁰ × V₂

Divide both side by 3×10¯¹⁰

V₂ = 6×10¯⁹ / 3×10¯¹⁰

V₂ = 20 V

3. Determination of the voltage across 200 pF.

Capicitance 3 (C₃) = 200 pF = 2×10¯¹⁰ F

Charge (Q) = 6×10¯⁹ C

Voltage 3 (V₃) =?

Q = C₃V₃

6×10¯⁹ = 2×10¯¹⁰ × V₃

Divide both side by 2×10¯¹⁰

V₃ = 6×10¯⁹ / 2×10¯¹⁰

V₃ = 30 V

Answer:

7 hours.

Explanation:

This is because you are traveling 5 kilometers per hour so 5 multiplied by 7= 35.

The correct answer of terrestial weather:

The solar insolation in the visible and infrared regions of the solar electromagnetic spectrum is much more than the energy that space weather occurrences release into the troposphere and stratosphere. Despite claims to the contrary, there may be some connection between the Earth's climate and the 11-year sunspot cycle. There is no proof of this. For instance, it has frequently been suggested that the Maunder minimum, a 70-year period almost devoid of sunspots, is correlated to a cooler climate, but these correlations have vanished after further research. Changes in cosmic ray flux are hypothesized to affect how much cloud formation occurs.

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Answer:

200 N

Explanation:

There is only two needed factors in play here; the mass and acceleration

According to Newton's 2nd Law: F = m*a

Now Acceleration is Velocity over Time, so we have another factor in play: Acceleration = 50-30/5 = 20/5 = 4m/s^2

Net force = (50 kg)(4 m/s^2) = 50*4 = 200 Newtons

The lowest stage of ingesting water constituent that may be reliably measured in an permitted laboratory is called the method detection limit (MDL).

The MDL is the minimum concentration of a particular contaminant that may be as it should be detected and quantified using a selected analytical method. This restrict is decided via a sequence of laboratory experiments that establish the bottom awareness of a contaminant that may be detected with a high degree of certainty.

The MDL is an important parameter in water exceptional testing, as it provides a basis for assessing the accuracy and precision of analytical strategies, and enables to make certain that water trying out outcomes are dependable and consistent.

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:The statement "The book of Acts is a good source of wisdom regarding friends" cannot be definitively categorized as true or false without additional context or personal interpretation.

The book of Acts, which is a part of the New Testament in the Bible, contains accounts of early Christian history and the actions of the apostles.

While it does provide insights into relationships and interactions between individuals, whether it specifically addresses wisdom regarding friends depends on one's interpretation and the specific passages being considered.

The book of Acts primarily focuses on the spread of Christianity, the early church, and the missionary journeys of the apostles. It provides accounts of their interactions with various individuals and communities.

While there are teachings and examples of friendship within the book, such as the close bond between Paul and Barnabas, the book's primary purpose is not to serve as a comprehensive guide specifically focused on wisdom regarding friends.

The interpretation of the book's relevance and wisdom on friendships may vary depending on individual perspectives and contextual analysis of specific passages.

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The energy required to heat up 100.0 grams of water from 0.000C to 60.00C is 25,080 Joules.

To calculate the amount of energy required to heat up 100.0 grams of water from 0.000C to 60.00C, the following equation must be used:  Energy (Joules) = mass (grams) x specific heat capacity (J/g°C) x temperature change (°C)

In this case, the energy required is Energy ((Joules) = 100.0 (grams) x 4.18 (J/g°C) x 60.00 (°C) = 25,080 Joules  The specific heat capacity of water is 4.18 J/g°C, which is a measure of how much energy is required to raise the temperature of 1 gram of water by 1°C. In this equation, 100.0 grams of water is being heated from 0.000C to 60.00C, which is a temperature change of 60.00 degrees Celsius.

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Answer:

D

Explanation:

Answer:

The forces between the charges is \(1.66*10^{-3} N\)

Explanation:

Data given:

First charge \(q_{1} =4.2*10^{-9} C\)

Another charge \(q_{2} =1.1*10^{-9} C\)

Distance (r)= (0.005)m

Force(F)=?

It is based on Electrostatic force between two charges i.e. defined by Coulomb's law.

The force acting between two static charges, is called electrostatic force.

The force acting between two charges is

(a) directly proportional to the product of charges F ∝ \(q_{1} q_{2}\)

(b) inversely proportional to the square of the separation. F ∝ \(\frac{1}{r^{2} }\)

From above;

\(F=k.\frac{q_{1} q_{2} }{r^{2} }\)

On putting values: -

\(F=1.66*10^{-3} N\)

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the net force on the rope is 25 N towards the west.  To find the net force on the rope, we need to subtract the force exerted by the girl towards the east from the force exerted by the dog towards the west.

So, net force = Force exerted by the dog towards the west - Force exerted by the girl towards the east

Net force = 190 N - 165 N = 25 N towards the west.
the net force on the rope is 25 Newtons (N) towards the west.

1. The girl pulls with a force of 165 N towards the east.
2. The dog pulls with a force of 190 N towards the west.
3. To find the net force, subtract the smaller force (165 N) from the larger force (190 N): 190 N - 165 N = 25 N.
4. Since the dog's force is greater, the net force is in the direction of the dog's pull, which is towards the west.

So, the net force on the rope is 25 N towards the west.

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Answer:

Shadows are formed when an opaque object or material is placed in the path of rays of light. The opaque material does not let the light pass through it. The light rays that go past the edges of the material make an outline for the shadow

Explanation: