Because a sidereal day is about 4 minutes shorter than a solar day stars "rise" about 4 minutes earlier than they did the day before. Consider a star that rises, comes above the horizon, at 2 am solar time on June 25th. Assume the Sun rises at 6 am everyday and sets at 7pm everyday. Also assume that a star that rises anytime during the night is visible to us and a star that rises anytime during the day is not visible (this is not strictly true, but will make answering the question easier). Without considering any other effects than those given in this problem, what dates of the year will the star be visible? You must show your work and reasoning behind how you arrived at your answer. Example 4.3 in the book may provide some assistance.

Answer:

3136 Joules

Explanation:

Applying,

P.E = mgh.............. Equation 1

Where P.E = potential energy, m = mass of the cinder block, h = height of the platform, g = acceleration due to gravity.

From the question,

Given: m = 16 kg, h = 20 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

P.E = 16(20)(9.8)

P.E = 3136 Joules

Hence the potential energy of the cinder block is 3136 Joules

Answer:

Explanation:

The answer is Temperature difference

Answer:

C

Explanation:

is the answer ,..........................

The speed with which they threw the bundle is  14 m/s.

We know that the speed of the bundle can be obtained from the use of the equations of kinematics. Now we can use the equation of the upward motion under gravity here.

Using;

v^2 = u^2 - 2gh

v = final velocity

u = initial velocity

g = acceleration due to gravity

h = height

Now;

v = 0 m/s at the maximum height

u^2 = 2gh

We now have;

u = √2gh

u = √ 2 * 9.8 * 10

u = 14 m/s

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The type of massage that involves a soft continuous stroking movement is called Effleurage.

Effleurage is a massage technique commonly used in various massage modalities, including Swedish massage, aromatherapy massage, and relaxation massage.

During effleurage, the massage therapist applies gentle, gliding strokes with their hands or fingertips over the client's body. The strokes are long, smooth, and rhythmic, creating a continuous and flowing motion. Effleurage can be performed using different levels of pressure, depending on the client's preference and the purpose of the massage.

Effleurage serves several purposes in a massage session. It helps to warm up the muscles, relax the client, and promote the circulation of blood and lymphatic fluids. It also aids in the application of massage oils or lotions and provides a soothing and comforting sensation to the recipient.

Overall, effleurage is a foundational technique in massage therapy that helps create a relaxing and enjoyable experience for the client while providing various physiological and psychological benefits.

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The momentum of an object is the product of mass and velocity of the object.

The condition that must be satisfied for conservation of momentum is that system must be isolated.

The momentum of an object is defined as the product of mass and velocity of the object.

Mathematically, the momentum of an object is given as;

P = mv

where;

The principle of conservation of linear momentum states that the total momentum of an isolated system is always conserved.

That is the sum of initial momentum of the system is equal to the sum of the final momentum of the system.

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The Measure of angle E is 55° and Length of the side EF is 12.49 units

The diagram is missing in the question and hence the diagram is shown below!!!

Given the triangle EDF with angle measures ∠D = 43° and ∠F = 82°.

As, we know, The sum of the measures of angles in a triangle is 180°.

So, we have,

∠E + ∠D + ∠F = 180°

i.e. ∠E + 43° + 82° = 180°

i.e. ∠E = 180° - 125°

i.e. ∠E = 55°

Thus, the measure of angle E is 55°.

Further we have

15/sin55 = EF / sin43

∴ EF =  15*sin43/sin55

∴EF = 10.23/0.189

EF = 12.49 units

Hence the length of side of EF is 12.49 units

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Please give the person above me brainliest!!!

✔ 55

✔ 12.49

The forces acting on m 2 are F acting uphill, T acting downward, and m 2 gsin acting downhill, where o=37 o. The rightward-pointing tension is the sole horizontal force acting on m 1. The result of the tension is 4.6 n.

In physics, a tension force is a force created when a rope, string, or cable is stretched as a result of an external force. Along the length of the rope or cable, tension is exerted in the opposite direction as the force acting on it. Stress, tensity, and tautness are other terms that may be used to describe tension.

Compression force's opposite is tension. Every object in the scene that is in contact with another one produces a force.

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Answer:

I think we still could have solar eclipse but with it blocking sun by being more small

Answer:

Chemical changes cause a substance to change into an entirely substance with a new chemical formula.

Explanation:

Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products.

Answer:

3000 kg meter per sec

Explanation:

Momentum of an object refers the motion of an object. Momentum depends upon mass and velocity both.

Formula to calculate the momentum of any object is,

Momentum = Mass × Velocity

By substituting values of mass and velocity of the shark from the question,

Momentum of shark = 200 × 15

                                  = 3000 kg meter per second

Therefore, shark weighing 200 kg has the momentum as 3000 kg meter per seconds.

Answer:

166.6 km/h

Explanation:

500/3

=166.6

\(\qquad\qquad\huge\underline{{\sf Answer}}\)

Here we go ~

As we have been given, The spring of spring constant " m " was cut to form 2 new springs in ratio of 5 : 3.

we have to find out the spring constant of the longer spring which was formed, and it's given that spring constant of the main spring was " m "

Now, let the length of main spring be " l "

So, lengths of the resultant springs will be :

\(\qquad \cal \dashrightarrow \: \dfrac{5l}{8} \: \: and \: \: \dfrac{3l}{8} \: \: \: \: respectively\)

And we know that spring constant is inversely proportional to length of spring so, we infer that :

\(\qquad \cal \dashrightarrow \: m\propto \dfrac{1}{l} m \: \: \: \: \: - (1)\)

where, m is spring constant of main spring and l is its length.

\(\qquad \cal\dashrightarrow \: m_1 \propto \dfrac{8}{5l} \: \: \: \: \: \: \: - (2)\)

where, m1 is spring constant of longer spring, and 5l/8 is its length.

let's divide (2) by (1), we will get ~

\(\qquad \cal \dashrightarrow \: \dfrac{m_1}{m} = \dfrac{8}{5l} \div \dfrac{1}{l} \)

\(\qquad \cal \dashrightarrow \: \dfrac{m_1}{m} = \dfrac{8}{5l} \times \dfrac{l}{1} \)

\(\qquad \cal \dashrightarrow \: \dfrac{m_1}{m} = \dfrac{8}{5} \)

\(\qquad \cal \dashrightarrow \: {m_1}{} = \dfrac{8}{5} m \)

So, the spring constant of equivalent longer strong formed will be 8/5 m

prove:

\(m_2 = \frac{8m}{5} \)

Explanation:

Given:

Spring constant of spring= m

The ratio of spring = 5:3

To find:

spring constant of the larger piece of spring?

Solution:

Let the length of larger piece L2 be 5x and smaller piece L1 be 3x with spring constant m2 and m1 respectively.

now,

spring constant (m) inversely proportional to the length of spring i.e.

\(m \propto \: \frac{1}{l} {,}\: m_1 \propto \: \frac{1}{l_1} {,}\: m_2 \propto \: \frac{1}{l_2}\)

Also,

The spring is connected in series hence,

\( \frac{1}{m} = \frac{1}{m_1} + \frac{1}{m_2} \)

and

\( \frac{m_1}{m_2} = \frac{l_2}{l_1} \\ {m_1} = {m_2} \cdot \frac{l_2}{l_1} \\ {m_1} = {m_2} \cdot \frac{5}{3} \\ \)

Substituting above value in,

\( \frac{1}{m} = \frac{1}{m_1} + \frac{1}{m_2} \\ \frac{1}{m} = \frac{1}{{m_2} \cdot \frac{5}{3}} + \frac{1}{m_2} \\ \frac{1}{m} = \frac{3}{5m_2} + \frac{1}{m_2} \\ \frac{1}{m} = \frac{3m_2 + 5m_2}{5 {m_2}^{2} } \\ \frac{1}{m} = \frac{8m_2}{5 {m_2}^{2} } \\ \frac{1}{m} = \frac{8 \cancel {m_2}}{5 \cancel{m_2}^{2} } \\ \frac{1}{m} = \frac{8}{5m_2} \\ m_2 = \frac{8m}{5} \)

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Answer:

f = 5000 N

Explanation:

Given that,

The weight of a car = 11000 N

Driving force on the car = 5000 N

We need to find the force opposing the motion of the car. The net force on th car is given by :

F-f = ma

As it moves with constant velocity, a = 0

i.e.

F - f = 0

F = f

f = 5000 N

Hence, the opposing force is 5000 N.

Answer:

moonnn

Explanation:

Answer:

True

Explanation:

idk

The energy of a photon is given as 3.03×10−19 J/atom. The wavelength of the photon is 656 nm (option D).

The energy of a photon is given by the equation E = hc/λ, where h is Planck's constant (6.626 x 10^-34 J s), c is the speed of light (2.998 x 10^8 m/s), and λ is the wavelength of the photon. To find the wavelength of the photon, we can rearrange the equation to λ = hc/E. Substituting the given energy of the photon (3.03 x 10^-19 J/atom) into the equation gives a wavelength of 656 nm, which is option D in the given choices. Therefore, the correct answer is option D, and we can use the equation E = hc/λ to calculate the wavelength of a photon if we know its energy.

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Answer:

Parallel processing

Explanation:

It is a parallel processing because it involves the brain processing many part of problem simultaneously.

The brain natural mode of information involves performing many task .

It is also ability of the brain to simultaneously process incoming stimuli or signals of different quality. It is a part of brain's vision and divide what is seen into four major parts which are color, motion, shape, and depth.

Answer: B)  Parallel processing

Answer: it is A hope that helps

Explanation:

Answer:

The required acceleration is \(a=1.1\) m/s²

Explanation:

Given

To determine

Acceleration a = ?

We know that acceleration is produced when a force is applied to a body.

The acceleration can be determined using the formula

\(F = ma\)

where

now substituting F = 250 , and m = 221 in the formula

\(F = ma\)

\(250 = 221 (a)\)

switch the equation

\(221(a) = 250\)

Divide both sides by 221

\(\frac{221a}{221}=\frac{250}{221}\)

simplify

\(a=\frac{250}{221}\)

\(a=1.1\) m/s²

Therefore, the required acceleration is \(a=1.1\) m/s²

Voltage produced in the secondary voltage is 1,600 V

A current transformer (C.T.) is a type of "transducer" that produces an alternating current in a secondary winding that is proportional to the current sensed in the primary winding. Current transformers reduce high voltage currents to much lower values ​​and provide a convenient way to safely monitor the actual current flowing in AC transmission lines using a standard ammeter. The working principle of a simple current transformer is slightly different from that of a normal voltage transformer. To calculate voltage in the secondary coil:

N₁/N₂ = V₁/V₂

where;

N₁ is number of turns in primary coil

N₂ is number of turns in secondary coil

V₁ is voltage in primary coil

V₂ is voltage in secondary coil

Now for the given case,

150/2000 = 120/V₂

V₂ = (120 x 2000)/150

V₂ = 1,600 V

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Ocean waves usually result from wind and can travel hundreds of miles before they reach the shore

The most frequent cause of waves is wind. Surface waves, often known as wind-driven waves, are produced when surface water and wind collide. A wave crest is produced when wind continuously disturbs an ocean or lake's surface.

Water moves in a circular motion as a result of waves being created by energy travelling through it. During a wave's passage, water atoms only move in a very narrow circle. The energy for the waves comes from the wind. Ocean waves are pushed by the wind, and the energy is then released along coasts.

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According to the question the ratio of rotational to linear kinetic energy is Krot/Klin = 0

Kinetic energy is a form of energy that an object possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. It is directly related to an object's mass and velocity. Kinetic energy can be transferred between objects and transformed into other forms of energy.

The linear kinetic energy, Klin, is given by Klin = 0.5*m*v², where m is the mass and v is the linear velocity.

Assuming that the sphere is rolling without slipping, the linear and angular velocities are related by the equation v = ω*R, where R is the radius of the sphere.

Substituting this into the equations for Krot and Klin gives:

Krot = 0.5*I*(v/R)²

Klin = 0.5*m*v²

Therefore, the ratio of rotational to linear kinetic energy is:

Krot/Klin = (I*(v/R)²)/(m*v²) = I/(m*R²)

Substituting the value for I (given as 0.4 MR2) into the equation gives:

Krot/Klin = 0

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The resistance of the copper wire is 0.161 Ω. The resistance of a material depends on various factors, including its length, cross-sectional area, and temperature.

What is Resistance?

Resistance is a measure of how much a material opposes the flow of electric current. It is defined as the ratio of the voltage applied to a conductor to the current flowing through it, and is measured in ohms (Ω). Materials with high resistance are poor conductors of electricity, while materials with low resistance are good conductors.

We can use the formula for resistance of a wire:

R = (ρ * L) / A

where R is resistance, ρ is resistivity, L is length of the wire, and A is its cross-sectional area.

We know that the wires are identical, so they have the same length and cross-sectional area. Therefore, their resistances are proportional to their resistivities:

R_aluminum / R_copper = ρ_aluminum / ρ_copper

We can rearrange this to solve for the resistance of the copper wire:

R_copper = R_aluminum * ρ_copper / ρ_aluminum

Plugging in the given values, we get:

R_copper = 0.263 Ω * (1.72 x 10^-8 Ω·m) / (2.82 x 10^-8 Ω·m) = 0.161 Ω

Therefore, the resistance of the copper wire is 0.161 Ω.

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Answer:

the x and y values

Explanation:

because on the table the x is the input and y is the output

The correct answer is e. None of the above alternatives gives a true statement. None of the statements in options a, b, c, and d are true when it comes to a modulus M over a ring R having a finite basis.

When a modulus M can be formed entirely from a finite set of elements, the modulus M is said to be finitely generated. M's finite basis does not, however, automatically imply that M is finitely generated. A basis is a set of linearly independent elements, and it might not be enough to produce all of the components of the modulus.

According to the assertion in option b, M must include nonzero items of nonzero order if it has a finite basis. This is untrue, though. The smallest positive number k, such that the element raised to the power of k equals the identity element, is referred to as the order of an element.

According to option c, every non-null element in a modulus with a finite basis has a null. Nevertheless, this claim is likewise untrue. It is possible for a modulus with a finite basis to have non-null elements without a null element.

According to option d, a ring R is a body, or a field, and only then can a modulus have a finite basis. However, this assertion is also untrue. Even though the ring R is not a field, a modulus can nonetheless have a finite basis. None of the given alternatives provides a true statement about a modulus M over a ring R having a finite basis.

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A–The ratio of the voltage to the maximum resistor value gives the

largest current of 340.14 mA. In B–The lamp resistance is 28.9 Ω each.

Responses (approximate values):

A- The largest current is 340.14 mA

B- The resistance of each lamp is 28.9 Ω

The range of values of the resistor = ±2%

The magnitude of the given resistor, R = 15 kΩ

The voltage supply, V = 5.0 V

Required:

Largest current, I, expected through the resistor.

Solution:

\(Current, \, I = \mathbf{\dfrac{V}{R}}\)

The current is largest when the resistor's value is smallest, which gives;

B- Current drawn from car head lamps = 0.83 A

Voltage of the battery = 12 V

Required;

Resistance of each of the two lamps wired parallel.

Solution;

Let R represent the resistance of each lamp in the parallel connection,

we have;

\(Equivalent \ resistance, \, R = \mathbf{ \dfrac{1}{\frac{1}{R} + \frac{1}{R} }} = \dfrac{R}{2}\)

Therefore;

\(\dfrac{R}{2} = \dfrac{12 \, V}{0.83 \, A}\)

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Answer:

4 m/s^2

Explanation:

F = ma

a = F/m

a = 200/50

a = 4 m/s^2

Answer:

Explanation:

The puck slides on the ice . Coefficient of sliding friction μ = .026

Limiting frictional force = μ R

R is reaction force of the surface .

R = mg

Friction force = μ mg

deceleration = μ mg / m

= μ g

= .026 x 9.8 = .2548

= 0.26 m /s².