Which is the angle measured in a horizontal circle around your horizon?.

Galileo Galilei, the Italian astronomer, physicist, and mathematician, was a proponent of the heliocentric model of the solar system, which placed the sun at the center instead of the Earth.

This theory was contrary to the widely accepted geocentric model at the time, which placed the Earth at the center of the universe.

Galileo's observations of the phases of Venus and the moons of Jupiter supported the heliocentric model, but he faced fierce opposition from the Catholic Church, which saw his ideas as a threat to religious doctrine.

In 1633, Galileo was summoned to Rome to stand trial for heresy. He was found guilty and placed under house arrest for the rest of his life.

Despite this, his work continued to have a profound impact on science, and his support of the heliocentric model paved the way for the eventual acceptance of the Copernican system, which placed the sun at the center of the solar system.

Galileo's legacy as a pioneer of modern science continues to be celebrated today.

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The equilibrant force is equal in magnitude and opposite in direction to the resultant force.

Since the resultant force is 10 N in the positive y axis direction (North), the equilibrant force is 10 N in the negative y axis direction (South). An equilibrant force is a force that can balance or counteract the effect of other forces acting on an object.

It has the same magnitude as the resultant force, but it acts in the opposite direction, resulting in a state of equilibrium where the net force acting on the object is zero.

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The statement "The production of unique spectral lines by elements is a result of their atomic structure and the transitions of electrons between energy levels" best describes the production of unique spectral lines by the elements.

Spectral lines are discernible lines, either dim or radiant, that manifest within the spectrum of light discharged or assimilated by an entity. They arise due to the emission or absorption of photons possessing precise energy levels by electrons dwelling within atoms or molecules.

The photon's energy corresponds precisely to the discrepancy in energy existing between the two levels that the electron transitions between.

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Complete question:

Which of the following best describes the production of unique spectral lines by the elements?

A. Elements produce unique spectral lines due to their electronic configurations and energy levels.

B. The production of unique spectral lines by elements is a result of their atomic structure and the transitions of electrons between energy levels.

C. Unique spectral lines are generated by elements based on their specific arrangement of electrons and the energy differences involved in electron transitions.

D. The production of distinctive spectral lines by elements is determined by the arrangement of their electrons and the specific energy levels involved in electron transitions.

Answer:

A is the right answer

Explanation:

mark me as a

Answer: B) Hydrogen should be moved to the right on the Periodic Table.

The name of the substance is silver based on the specific heat capacity value.

The specific heat capacity of the substance is calculated by applying the following formula for heat capacity.

Q = mcΔθ

where;

c = Q / mΔθ

The specific heat capacity of the substance is calculated as;

c = (5875 J ) / ( 500 g x 50 )

c = 0.235 J/kgK

The substance that has the same specific heat capacity calculated above is silver.

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The electric bill for the household for the month of June is ₹ 504.72

We'll begin by obtaining the energy consumed. This is shown below:

For fridge:

Energy = power × time

Energy for fridge = 400 × 10

Energy for fridge = 4000 Wh

Divide by 1000 to express in KWh

Energy for fridge = 4000 / 1000

Energy for fridge = 4 kWh

For fan:

Energy = power × time

Energy for fan = 80 × 6

Energy for fan = 480 Wh

Divide by 1000 to express in KWh

Energy for fan = 480 / 1000

Energy for fan = 0.48 kWh

Energy for 2 fans = 2 × 0.48 = 0.96 kWh

For tube:

Energy = power × time

Energy for tube = 18 × 6

Energy for tube = 108 Wh

Divide by 1000 to express in KWh

Energy for tube = 108 / 1000

Energy for tube = 0.108 kWh

Energy for 6 tubes = 6 × 0.108 = 0.648 kWh

Total energy consumed per day = 4 + 0.96 + 0.648 = 5.608 kWh

Total energy consumed per month = 30 × 5.608 = 168.24 kWh

Finally, we shall determine the electric bill for the month of june. Details below:

Electric bill = energy × Cost per KWh

Electric bill for June= 168.24 × 3

Electric bill for June = ₹ 504.72

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Answer:

94.35 meter

Step by step explanation

Mass of the bowling ball is 5kg.

How to find mass of the bowling ball if we know force and acceleration?

Given:

Force acting on a bowling ball: 15N

Acceleration: 3m/\(s^{2}\)

We know that;

F=ma

Hence, m= \(\frac{F}{a}\)

m= \(\frac{15}{3}\)

m= 5kg

Mass of the bowling ball is 5kg.

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The Bluegreen alliance is not merely a partnership of convenience, but rather a strategic alliance that seeks to find common ground between the two groups and work towards common goals.

The BlueGreen Alliance is a partnership between labor unions and environmental organizations that aims to create good jobs and a clean environment.

The BlueGreen Alliance has the potential to make a significant impact on both the economy and the environment by advocating for policies that support sustainable industries and job growth. By bringing together the voices of labor and environmental groups, the BlueGreen Alliance is able to advocate for policies that benefit both workers and the environment.

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Answer: It is the study of the environment and objects around us and how they interact with each other. It is a systematic study that involves collecting information, observing,and  experimentation.

Explanation:

Answer:

Below

Explanation:

d = 1/2 a t^2

.80 = 1/2 ( 5.8 x 10^?) t^2  

  ( I think you left off the exponent...and acceleration has units m/s^2  ...not m/s)

t =  .166 s

v = at = 58 x .166= 9.63 m/s

Answer:

Yes

Explanation:

Rubbing a balloon with wool cloth will create static electricity charges. If you place small pieces of tissue paper near the balloon in Picture 2, they would probably stick to the balloon.

Answer:

d

Explanation:

Density, temperature, and pressure increase as you move inward in the interior of the Sun. This means that the weight of the star pushing inward at a given radius _________ as you move inward toward the core.

a. increases

b. decreases

c. stays the same

d. There is not enough

Answer:

A) having each person listen to just 1 song instead of 5.

Explanation:

Ravi could accurately use the outcome to compare the hearing capacities of his friends by this experiment if appropriate precautions are observed.

Playing 5 well known songs simultaneously could result to the interference of sounds when each participant moves away from the player. Which could naturally cause the variation in volume of the songs played with respect to the increasing distance.

Therefore, the reliability of the result from this experiment can be increased if each person listen to just 1 song instead of 5 at a predetermined volume. Each participant would be able to focus on hearing a song during the experiment.

The conclusions that are correct about the resistance  include 1 and 3.

option C is the correct answer.

Ohms law states that the current flowing in ohmic conductor is directly proportional to the current across the conductor.

Mathematically, the formula for ohms law is given as;

V = IR

where;

The power dissipated in a circuit is proportional to the square across the circuit.

P = IV

P = I²R

P = V²/R

where;

From the formula given above, the power dissipated in the circuit is directly proportional to the square of voltage and inversely proportional to the resistance of the circuit.

The smaller the resistance, the more power is dissipated in the circuit.

In the given graph, R3 is the least resistance and it will have the most dissipated in the circuit.

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Answer:

Topaz

Explanation:

It's harder than garnet and comes in various colors

Answer:

garnet

Explanation:

a. Centre of percussion: The center of percussion is a point on an object where an impact can be applied without causing any rotational torque on the object.

It is the point where a strike will result in the smoothest and least disruptive transfer of energy through the object.

b. Sharpness of resonance: Sharpness of resonance refers to the degree of peak amplification in a resonant system. It is a measure of how quickly the amplitude of vibrations increases near the resonant frequency. A high sharpness of resonance indicates a narrow peak and a rapid increase in amplitude.

c. Dirac-delta function: The Dirac delta function, often denoted as δ(t), is a mathematical function that is defined as zero for all values of t except at t = 0, where it is infinite.

The integral of the Dirac delta function over a specific range gives a value of 1. It is commonly used in mathematics and engineering to represent impulses or concentrated forces.

d. Undamped vibration absorber: An undamped vibration absorber is a device used to reduce vibrations in a mechanical system.

It consists of a mass-spring system that is tuned to have the same natural frequency as the vibrating system. The absorber is designed to counteract the vibrations by vibrating in an equal but opposite manner, resulting in the reduction or elimination of the vibrations.

Since it is undamped, it does not dissipate energy over time.

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Answer:

0.024m^3

Explanation:

=======

Answer:

=======

Given:-

Mass of the block of wood = 24 kg

Volume of wood = 0.032 m^3

Density of water = 1000kg/m^3

Now,

Density of wood is given by,

\frac{m}{v} = \frac{24}{0.032} \\

\frac{m}{v} = 750 \: kg/m ^{3}

Therefore,

The density of wood is 750kg/m^3

By principle of floatation,

Mass \:of\: wood = Mass\: of\: liquid \:displaced

Therefore,

Mass of liquid displaced = 24kg

Volume of liquid displaced (v),

\frac{m}{v} = \frac{24}{1000} \\

\frac{m}{v} = 0.24m ^{3}

Now,

Since the volume of the wood is equal to the volume of water displaced, it is 0.024m^3

=====

Note:

=====

=> The volume of the wood below the water surface is the volume of water displaced.

=> Buoyant\: force = Weight\: of\: the \:displaced\: water.

Answer:

Frictional force will be 150N

600

mph

Velocity is the distance traveled in a given time, or

v

=

x

t

where

v

is velocity,

x

is distance and

t

is time.

Here,

x

=

3000

and

t

=

5.0

, so

v

=

x

t

=

3000

5

=

600

Don't forget units. Since the question's data is in miles and hours, the units will be miles per hour, or mph, so

3000

miles

5

hours

=

600

miles

hour

=

600

mph

The statement that is most likely true about the locations is that location A is farther from the equator than location B ( A )

The average temperature throughout the year is higher in location B then that of location A. The temperature is typically warmer near the equator and is typically cooler near the polar regions.

But some factors such as elevation, precipitation and ocean currents might affect the climate pattern. This change in temperature between equator and polar regions is due to the fact that equatorial regions receive more light and energy from the Sun than the polar regions.

Therefore, the statement that is most likely true about the locations is that location A is farther from the equator than location B ( A )

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(a) To determine the maximum altitude reached by the hikers, we need to find the maximum value of the function y(t). By analyzing the given function, we can see that the maximum altitude occurs at the highest point of the curve.

To find this point, we can take the derivative of y(t) with respect to t and set it equal to zero. Solving this equation will give us the value of t at which the maximum altitude is reached. Substituting this value back into the original function will give us the maximum altitude.

(b) To calculate the total feet ascended by the hikers, we need to find the area under the curve of the function y(t) over the time interval of the hike. This can be done by integrating y(t) with respect to t over the given interval.

(c) Similarly, to calculate the total feet descended by the hikers, we need to find the area under the curve of the function y(t) below the x-axis over the time interval of the hike. This can be achieved by integrating the absolute value of y(t) with respect to t over the given interval.

For the second part of the question:

(a) To determine when the velocity is zero, we need to find the time(s) at which the derivative of the position function x(t) is equal to zero.

(b) The position at t=5s can be found by substituting t=5 into the position function x(t). The acceleration can be found by taking the second derivative of x(t) with respect to t. The total distance traveled can be calculated by finding the definite integral of the absolute value of the velocity function from t=0 to t=5.

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The density of a cube is 2 g/cm3. whose mass is 2 g and volume is 1 cm.

Density may be defined as a type of physical quantity that significantly involves the measurement of quantity or mass per unit of volume in a particular substance. It is generally the quantity per unit of space.

It determines the area occupied by any three-dimensional object to thing. While representing the density, the symbol most often used for density is ρ although the Latin letter D can also be used.

According to the question,

The mass of a cube = 2.0 g.

The volume of a cube = 1.00 cm.

The density of a cube = ?

The formula for calculating density is as follows:

                     = 2.0 g/1.00 cm. = 2 g/cm3.

Therefore, the density of a cube is 2 g/cm3. whose mass is 2 g and volume is 1 cm.

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Answer:

C.)water

Explanation:

Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.

Mechanical weathering is the breaking down of rocks by physical means.

Chemical weathering is the decay of rocks by chemical means.

The phase transition that occurs when the pressure is decreased to 760 mmHg at constant temperature is vaporization, specifically, boiling.

When pressure is decreased to 760 mmHg (1 atm) at constant temperature, the system reaches its boiling point. At this point, vaporization occurs, which is the transition of a substance from its liquid phase to its gaseous phase.

During this process, the molecules in the liquid phase gain enough energy to overcome the intermolecular forces holding them together, allowing them to move freely in the gaseous phase.

Boiling is a specific type of vaporization that takes place throughout the entire liquid, producing bubbles of vapor that rise to the surface and escape into the atmosphere. This phase transition is significant as it has various applications in daily life and industrial processes, such as cooking and distillation.

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Answer:

a) -1.25 m/s²

b) 62.5 m

Explanation:

Convert km/h to m/s:

45 km/h × (1000 m/km) × (1 h / 3600 s) = 12.5 m/s

a = Δv / Δt

a = (0 m/s − 12.5 m/s) / 10 s

a = -1.25 m/s²

Δx = ½ (v + v₀) t

Δx = ½ (0 m/s + 12.5 m/s) (10 s)

Δx = 62.5 m

Answer:

♥ Convection.

♥ Conduction.

♥ Radiation.

                              ♥ (  お力になれて、嬉しいです！) ♥

Part-A : the current through the person's body is:I = V/R = 16,000/(1700 + 13,000) = 1.01 A.The unit of current is Amperes (A). Part-B: the power dissipated in the person's body is:

P = I^2 * R = 1.01^2 * 13,000 = 133 W. Part-C: The internal resistance should be 15,987,000 Ω or more.

Part A:

The current through the person's body can be calculated using Ohm's Law:

I = V/R

where V is the voltage across the person's body and R is the total resistance of the circuit (internal resistance of the power supply + body resistance).

We are given V = 16 kV = 16,000 V, R = 1700 Ω, and the body resistance = 13 kΩ = 13,000 Ω.

Therefore, the current through the person's body is:

I = V/R = 16,000/(1700 + 13,000) = 1.01 A

The unit of current is Amperes (A).

Answer: 1.01 A

Part B:

The power dissipated in the person's body can be calculated using the formula:

P = I^2 * R

where I is the current through the person's body and R is the body resistance.

We have already calculated I in Part A. R = 13,000 Ω.

Therefore, the power dissipated in the person's body is:

P = I^2 * R = 1.01^2 * 13,000 = 133 W

The unit of power is Watts (W).

Answer: 133 W

Part C:

To make the power supply safe, the maximum current that can flow through the person's body should be less than or equal to 1 mA.

We can use Ohm's Law again to find the maximum body resistance that would allow a current of 1 mA to flow through the body:

R = V/I = 16,000/0.001 = 16,000,000 Ω

The internal resistance of the power supply should be increased such that the total resistance of the circuit (internal resistance + body resistance) is equal to 16,000,000 Ω or more.

Let the new internal resistance be R'. Then:

R' + 13,000 Ω ≥ 16,000,000 Ω

R' ≥ 15,987,000 Ω

The unit of resistance is Ohms (Ω).

Answer: The internal resistance should be 15,987,000 Ω or more.

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