if you see the star sirius in the constellation canis major set in the middle of february at 2 am, what time will it set in the middle of march?

Answer:

The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure. Note that the fixed points are defined using common physical phenomena so that they can be easily reproduced.

Answer:

Steam point

Explanation:

The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure.

Answer:

I believe its san andreas fault because its a fault

Explanation:

Answer:

The Mid-Atlantic Ridge

11223.9J or 11.2239 kJ is the total internal energy of the gas.

Internal energy, which results from the motion of matter at the molecular level, is a type of energy that exists in all systems. For internal energy, the letter U is used, and the joule is the unit of measurement (J).

As a substance changes from one state or phase to another—from solid to liquid to gas—its internal energy also rises. It is possible to imagine planetary bodies as a fusion of heat engines and heat reservoirs.

The heat engines transform some of the thermal energy stored in the heat reservoirs into different forms of mechanical, electrical, and chemical energy.

The formula for total internal energy of gas is

(3/2)nRT

where n = amount of substance

R = Ideal gas constant

T = temperature

Put the value in the equation

(3/2)nRT

= (3/2)(3)( 8.314)(300)

= 11223.9J

Thus, 11223.9J or 11.2239 kJ is the total total internal energy of the gas.

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The combination of the compound microscopes and refracting telescopes, operate by magnifying the image.

High levels of magnification are produced by the objective lens and eyepiece lens working together. Multiplying the objective lens' and the eyepiece lens' individual magnifications yields the microscope's overall magnification.

In a refracting telescope, the objective lens and eyepiece lens work together to produce high magnification, which makes distant objects look larger and more distinct to the spectator.

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Answer:

Explanation:

R1= (1/6 + 1/6)rised to -1 = 3 ohm

R total = R1 + 6 = 3+ 6 =  9 ohm

Answer:

False

Explanation:

It's common sense  

Answer:

True

Explanation:

Answer:

18.09

Explanation:

add all the numbers together

There are no specific number as scientist can just go around counting all the atoms plus they always find more but an estimated number is 100000000000000000000000000000000000000000000000000000000000000000000000000000000 = 10^80

Answer:

1) \(t=4.16s\)

2) \(s=44.10m\)

3) \(v_{final}=40.84\frac{m}{s}\)

Explanation:

a) How long till it hits the ground?

Since the person threw the ball perfectly horizontal, the ball has 0 vertical velocity at the start. In fact, it takes the same time for the ball to reach the ground if they dropped the ball instead of throwing. The acceleration in a vertical drop is gravity (\(a=9.81\frac{m}{s^2}\))

Basically, we'll solve first part as if he just dropped the ball.

Use this linear motion formula:

\(s=v_{inital}(t_{final} -t_{initial})+1/2a(t_{final}-t_{inital})^2\)

Since \(v_{initial} =0\) we can remove that part from equation:

\(s=1/2a(t)^2\)

\(85=1/2*9.81(t)^2\) Plug and solve

\(170=9.81(t)^2\)

\(17.33=t^2\)

\(t=4.16s\)

b) How far away does it land?

We will use the same formula above for horizontal motion.

\(s=v_{inital}(t_{final} -t_{initial})+1/2a(t_{final}-t_{inital})^2\)

\(s=v(t)+0\)  (Remove the last part since \(a=0\))

\(s=10.6(4.16)\)

\(s=44.096m\)

c) How fast was it traveling vertically at the end?

Use this other linear motion formula for this step. s=85m (height of building).

\(v_{final} ^2-v_{initial} ^2=2as\)

\(v_{final} ^2-0^2=2(9.81)*(85)\) Started with 0 vertical velocity.

\(v_{final} ^2=1667.7\)

\(v_{final}=40.837m/s\)

According to the question of speed, a) 16.05 seconds does the ball hit the ground, b) 169.33 m far from the building will it land, c) 37.68 m/s is the velocity of the ball just before it hits the ground.

What is speed?
Speed is the rate at which something moves or an object's rate of motion. It can be measured in metres per second, kilometres per hour, and miles per hour, and is often used to describe the motion of objects, such as vehicles, animals, or natural phenomena.

a. The time it takes for the ball to hit the ground is given by the equation t = (2×h)/v, where h is the height of the building (85 m) and v is the initial velocity of the ball (10.6 m/s). Plugging in the given values, we get t = (2×85)/10.6 = 16.05 seconds.

b. The distance from the building at which the ball will land is found using the equation x = vt, where v is the initial velocity (10.6 m/s) and t is the time it takes for the ball to hit the ground (16.05 seconds). Plugging in the given values, we get x = 10.6×16.05 = 169.33 m.

c. The velocity of the ball just before it hits the ground is determined by the equation v = √(2gh), where g is the acceleration due to gravity (9.8 m/s2) and h is the height of the building (85 m). Plugging in the given values, we get v = √(2×9.8×85) = 37.68 m/s. This is the velocity of the ball just before it impacts the ground.

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Explanation:

Hey there!!

Hope it helps...

The Rinn beam alignment device that includes one ring and one arm that can be used for anterior, posterior, and bite-wing receptor positioning is Rinn XCP Extension Cone Paralleling System.

Rinn beam alignment devices are used in dental radiology to ensure that the x-ray beam is focused correctly on the teeth, allowing for accurate imaging. Rinn beam alignment devices have two parts: a ring and an arm. The ring is inserted into the patient's mouth and rests against the teeth, while the arm holds the x-ray film or sensor in place.

The alignment device guarantees that the film or sensor is in the right position to receive the x-ray beam. Rinn beam alignment devices come in a variety of shapes and sizes, making it easy to locate one that fits a particular patient's needs.  

Rinn XCP Extension Cone Paralleling SystemRinn XCP Extension Cone Paralleling System includes one ring and one arm that can be used for anterior, posterior, and bite-wing receptor positioning. The system includes a long cone holder, a short cone holder, and an endo cone holder.

The XCP System is designed to create consistent, parallel radiographs while minimizing patient discomfort. It is a simple, effective, and user-friendly system that produces accurate and high-quality radiographs. The XCP System is suitable for all kinds of dental procedures, including endodontics and periodontics. It is also suitable for use with digital sensors.

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Answer:

c.negative

Explanation:

The net work output of the heat engine following path abcda in figure 14.30 can be calculated by finding the difference in the work done during the isobaric processes AB and CD.

The net work output of the heat engine is determined by calculating the difference in the work done during the isobaric processes AB and CD. This can be done by using the equation for work, which is given by the product of the pressure and the change in volume.

During the isobaric process AB, the work done is equal to the pressure multiplied by the change in volume (v2 - v1). Similarly, during the isobaric process CD, the work done is equal to the pressure multiplied by the change in volume (v1 - v2).

By subtracting the work done during the process CD from the work done during the process AB, we can find the net work output of the heat engine.

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Answer: #2

Explanation:

Vectors are described by both magnitude and direction

According to the graph of displacement vs. time, the object's velocity is 0.02 m/s

The displacement is the shortest distance travelled by the particle. It is the vector quantity which re[presents both the magnitude and direction.

Velocity is the time rate of change of displacement with time.

Given is the displacement 0.2 m and time taken is 10s. So, the velocity is

v = 0.2/10

v = 0.02 m/s

Thus, the object's velocity is 0.02 m/s

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Answer: Material is any substance that an object is made from.

All materials are made up of matter.

Examples include: glass, Chalk, paper, and wax, which are different types of materials

Explanation:

It is given that, swimmers swim a total of 8 laps of a 50-meter-long swimming pool. We need to find the distance traveled by a swimmer in this meet.

Distance = total path covered during entire journey

In every lap he covers a distance of 50 m. It means in 8 laps it will cover 8×50 = 400 meters.

Displacement = shortest path covered

After 8 laps, the swimmer ultimately comes to the starting point. It means its displacement is equal to 0.

The conduction of current on the postsynaptic neuron in an electrical synapse occurs through direct flow of ions between the presynaptic and postsynaptic neurons.

In electrical synapses, the conduction of current on the postsynaptic neuron occurs through direct flow of ions between the presynaptic and postsynaptic neurons. These synapses are formed by specialized structures called gap junctions, which create channels between the cells, allowing ions to pass through. The channels are formed by connexin proteins that span the plasma membranes of adjacent neurons.

When an action potential reaches the presynaptic neuron, it depolarizes the cell membrane and triggers the opening of voltage-gated ion channels. This results in the influx of positively charged ions, such as sodium (Na+), into the presynaptic neuron. As a result, the electrical potential of the presynaptic neuron becomes more positive.

Due to the direct connection provided by the gap junctions, these positive ions can flow through the channels into the postsynaptic neuron. This movement of ions generates an electrical current that spreads across the postsynaptic neuron. The current causes depolarization of the postsynaptic membrane, leading to the initiation of an action potential in the postsynaptic neuron.

The strength of the electrical synapse is determined by the size of the gap junctions and the number of connexin proteins present. The larger the gap junctions and the more connexin proteins, the more ions can pass through, resulting in a stronger electrical coupling between the neurons.

at electrical synapses, the conduction of current on the postsynaptic neuron occurs through the direct flow of ions between the presynaptic and postsynaptic neurons via specialized gap junctions. This direct electrical coupling allows for rapid and synchronized transmission of signals. Electrical synapses are particularly important in neural circuits that require fast and coordinated communication, such as in reflex arcs or the synchronization of cardiac muscle cells.

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The capacitance of a parallel plate capacitor is proportional to the area of the plates. Hence option C is correct.

A capacitor is a device that stores electrical energy in an electric field by collecting electric charges on two isolated surfaces. It is a passive electronic component with two terminals.

Capacitance is the effect of a capacitor. While any two electrical conductors in close proximity in a circuit have some capacitance, a capacitor is a component designed to provide capacitance to a circuit. The capacitor was initially referred to as a condenser, a word that is still used in a few compound names, such as the condenser microphone.

Capacitance of the capacitor is directly proprtional to the area of the plates and inversly proprtional to the distance between them.

C = ∈A/d

Hence option C is correct.

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If the magnetic field strength varies, we cannot make any conclusive statements about the proton's speed at point 2 compared to point 3 without additional information.

To answer this question, we need to understand the context of point 2 and point 3. Without further information, we cannot determine the specific speeds at these points. However, we do know that the proton's speed will change as it moves through a magnetic field due to the Lorentz force. This force is proportional to the velocity of the particle and the strength of the magnetic field.

Therefore, if the magnetic field strength is constant, the proton's speed will be higher at point 2 if it was accelerated from point 1, and will be lower at point 2 if it was decelerated from point 3. On the other hand, if the magnetic field strength varies, we cannot make any conclusive statements about the proton's speed at point 2 compared to point 3 without additional information.

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All traditional oriental medicine recognizes that an energy force called Qi flows through the body.

Traditional Chinese medicine is predicated on the idea that qi, or the body's life force, travels along meridian channels and maintains equilibrium in a person's physical, mental, emotional, and spiritual well-being. The Feldenkrais technique is a type of somatic education that combines focused attention and gentle movement to improve human function and mobility. You can broaden your range of motion, boost your comfort level, and enhance your flexibility and coordination by using this method. This could involve your food, your workout routine, psychotherapy, relationship counseling, and more. therapies that are complementary or alternative, including acupuncture, chiropractic adjustments, homeopathy, massage, naturopathy, and others.

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The French train in a sample problem is traveling 301 km/h. When it is 360m from a road crossing, the engineer blows the whistle. If the speed of sound is 330 m/s, how many seconds after the whistle is heard at the crossing will the train cross there 0.57 sec

The speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.

Total velocity of the sound coming towards 631 m/sec. Time taken to reach is 360/631 = 0.57 sec

The French train in a sample problem is traveling 301 km/h. When it is 360m from a road crossing, the engineer blows the whistle. If the speed of sound is 330 m/s, how many seconds after the whistle is heard at the crossing will the train cross there 0.57 sec

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300 meters because 5x600=3000 and 3000÷10=300 please someone check me for this answer

Explanation:

Michael should put the vase at the bottom of the shelf to reduce the potential energy because the height of the vase to the floor is nearly zero.

Michael pulled back the leash so that the dog could not run after the squirrel is an example of first law of motion because it is an action which is stronger than the force. Thus, the correct option is A.

Newton's first law of motion is also known as the law of inertia. It states that an object at rest will remain at rest and an object in motion will remain in motion with the same speed and direction unless and until it is acted upon by an unbalanced external force.

An external force can be defined as the change in the mechanical energy of the object which is either the kinetic energy of the object or the potential energy present in an object. These forces are caused through the external agents. Examples of external forces include friction, normal force, and air resistance.

Therefore, the correct option is A.

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Answer: A) 0.29  The fraction of the light intensity is reflected when light is normally incident from air on glass  is 0.29.

Critical angle for total internal reflection:

It is an angle of incidence, which leads to an angle of refraction of 90 °.In this case, the light beam reflects back into the medium rather than refracting through it. This phenomenon is called total internal reflection.

Critical angle is given by sin θc = n2/n1

Given, n1 = refractive index of air = 1n2 = refractive index of glass = 1.25

∴ sin θc = n2/n1= 1.25/1= 1.25

⇒ θc = sin-1 (1.25)= 53° (approx).

Therefore, the answer is (C) 53°.

Fraction of the light intensity is reflected: When light is incident normally from air on glass, the fraction of the light intensity that is reflected can be given by, R = (n1 - n2 / n1 + n2)2

Where, n1 = refractive index of air = 1n2 = refractive index of glass = 1.8

∴ R = (n1 - n2 / n1 + n2)2= (1 - 1.8 / 1 + 1.8)2= (-0.8 / 2.8)2= 0.29.

Therefore, the answer is (A) 0.29.

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The mass and weight of object on moon is 0.0138kg  and 0.0229kg .

Since force is a vector quantity, we must consider the direction in which it acts. There are two main types of frictional force: static force (Fst) and sliding force (Fsl). Normal forces (FN) produce these forces acting perpendicular to the direction of motion, although they act in the opposite direction to the object's motion.

It is equivalent to the weight of the object plus the extra weight. For example, pushing down on a block of wood on a table increases the normal force and thus the frictional force.

me=12Kg

ge=10

gm=10/6= 1.66

M=?

me ge =M gm

M=me ge/gm

M=120/1.66

M=0.0138kg

W=mg =0.0138 x 10kg

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Answer:

m2 = 13950 [kg]

Explanation:

To solve this problem we must use the principle of conservation of linear momentum, which is defined as the product of mass by velocity, and can be determined by means of the following expression:

P = m*v

where:

P = lineal momentum [kg*m/s]

m = mass [kg]

v = velocity [m/s]

Now that momentum is conserved, we need to analyze the conditions before the collision and after the collision. In this way we must propose the following equation:

ΣPbefore = ΣPafter

(m1*v1) + (m2*v2) = (m1+m2)*v3

where:

m1 = mass of the railroad car = 9300 [kg]

v1 = velocity of the railroad car before the collision = 15 [m/s]

m2 = mass of the box car [kg]

v2 = velocity of the boxcar before the collision = 0 (the car is at rest)

(m1 + m2) = combined mass of the cars, they stick together after the collision [kg]

v3 = combined velocity of the cars after the collision = 6 [m/s]

(9300*15) + (m2*0) = (m1+m2)*6

139500 = (6*9300) + 6*m2

83700 = 6*m2

m2 = 13950 [kg]

The mass of the second railroad car which was initially at rest is 13950kg.

Given the data in the question;

Mass of railroad car2; \(m_2 = \ ?\)

Since railroad car2 was initially at rest,

After the strike, the wo cars stick together and moved

To determine the mass of the second railroad car, we use conservation of linear momentum:

\(m_1u_1 + m_2u_2 = (m_1 + m_2 )v\)

We substitute our given values into the equation

\((9300kg * 15m/s) + ( m_2 * 0 ) = ( 9300kg + m_2 )6m/s\\\\9300kg * 15m/s = ( 9300kg + m_2 )6m/s\\\\139500kg.m/s = 55800kg.m/s + ( m_2 * 6m/s )\\\\139500kg.m/s - 55800kg.m/s = m_2 * 6m/s\\\\83700kg.m/s = m_2 * 6m/s\\\\m_2 = \frac{83700kg.m/s}{6m/s} \\\\m_2 = 13950kg\)

Therefore, the mass of the second railroad car which was initially at rest is 13950kg.

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Insulators are often defined as materials that do not allow electricity to flow through them. Option A is correct. Electrons in an insulator do not move readily.

Insulators are commonly employed in physics. Insulators are often defined as materials that do not allow electricity to flow through them.

Insulators are also referred to as poor electrical conductors. We may discover various instances of these insulators in our daily lives. Insulators include materials such as paper, glass, rubber, and plastic.

Insulators are often defined as materials that do not allow electricity to flow through them. Electrons in an insulator do not move readily

Hence option A is correct. Electrons in an insulator do not move readily

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