What types of energy transformations take place when a balloon lights a light bulb?

For compound microscope:  the objective lens produces a real, inverted image that is then magnified by the eyepiece lens to produce an upright, virtual image.

For simple microscope: The objective lens produces a real, inverted image that is viewed directly by the eye without the need for an eyepiece lens.

For telescope: The objective lens or mirror produces a real, inverted image that is then magnified by the eyepiece lens to produce an upright, virtual image. The eyepiece can be positive or negative depending on the desired magnification.

The following are some signs (positive or negative) of objective and eyepiece lenses in microscopes and telescopes:

Objective lens:

Eyepiece lens:

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Energy is defined in science as the ability to move matter or change matter in some other way.

Answer:

C

Explanation:

I know this is late for the poster, but for anyone who needs help, it's the correct answer

The existing business will allow the owner to build upon the goodwill of previous customers. Hence, option C is correct.

An organization or enterprising entity that conducts business, industrial, or professional operations is referred to as a business. A business seeks to coordinate some form of economic production (of goods or services). Businesses can be for-profit entities or nonprofit organizations that support a noble cause.

Here are some qualities of a good businessman are :

Hence, buying an existing business, it will allow the owner to build upon the goodwill of previous customers.

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Pendulum length must be made for it to keep perfect time of 100 or 0.0167 % or 0.017 % nearly.

Time is the  measure of to  non-stop, consistent change by  in our surroundings, or it is  usually from a specific to  viewpoint.

Total number of seconds in a normal day is 24×60×60 = 86400 seconds

We know that time period of pendulum is

T= 2π √l/g

Then we use fractional error method

∆T/T = 1/2 ( ∆l /l )

Here l is length of pendulum string

So 7.2/86400 = 1/2 ( ∆l/l)

∆l/l = 0.000167

So percentage change is

∆l/l *100 or 0.0167 % or 0.017 % nearly.

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Let's see what these words mean:

Vertebrae means a backbone as well as an internal skeleton

Hair is the body's way of creating a defense for the skin (and additionally to look bigger)

Tetrapod is a four footed animal

Amniotic egg means that the embryo develops inside an egg.

Biped means using two feet to walk.

Amphibians, lemurs, and humans both have vertebrae and tetrapod. While humans do not walk on four legs it is said that humans are classified as that group

Answer:

A small, lemur-like creature may have been an early ancestor of monkeys, apes, and humans.

Explanation:

The size of a circuit that operates at a frequency of 20 MHz is dependent on the design of the circuit and the components used in it.

If the designer is concerned with AC effects, then the size of the circuit components should be a fraction of the wavelength of the signal. The wavelength of a 20 MHz signal is 15 meters, so the circuit components should be much smaller than that. The size of the circuit would depend on the speed of the components used in the circuit. Generally, the speed of the components determines how quickly signals can travel. For example, if the components used in the circuit are capable of sending signals at speeds of 1 cm/ns, then the circuit can be at most 25 cm in size.

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Answer:

17.959

Explanation:

v = 2πr/T

v = 2 x 22 x 2.8/ 7 x 0.98

v = 123.2/ 6.86

v = 17.9

Answer:

The melting and boiling point of water in Fahrenheit scale is divided into 180 equal intervals, that means each division denoting 1°F.

division means their melting and boiling point is divided into 180 equal intervals that means each division indicates 1 degree F.

Answer:

F=ma

5N=0.3a

a=5/0.3=16.66m/s²

PLEASE GIVE BRAINLIEST

Answer:

16.7

Explanation:

acceleration=force/mass

(a) The angular speed is 1.03 rad/min. (b) the speed of the current is 2.06 ft/min. (c) the speed of the current is 0.037 mph.

(a) The angular speed of the circular paddle wheel can be calculated by dividing the given speed of rotation (13rpm) by the circumference of the wheel. The circumference of a circle can be found using the formula

C = 2πr,

where r is the radius. Thus, the angular speed is 13rpm / (2π(2ft)) = 13/(4π) ≈ 1.03 rad/min (rounded to one decimal place).

(b) For finding the speed of the current in feet per minute, multiply the angular speed (1.03 rad/min) by the radius of the wheel (2ft). The formula for linear speed is:

v = ωr

where ω is the angular speed and r is the radius. Therefore, the speed of the current is approximately 2.06 ft/min.

(c) For converting the speed of the current from feet per minute to miles per hour, use the conversion factor 1 mile = 5280 feet. First, convert the speed from feet per minute to feet per hour by multiplying by 60, and then divide by 5280 to get the speed in miles per hour. The speed of the current is approximately 0.037 mph (rounded to one decimal place).

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The speed of the projectile (launched horizontally from a height H) in terms of X, H, and g is given by: v = √(gX)

Let's solve the problem step by step:

Distance traveled horizontally (X)

Height of launch (H)

Acceleration due to gravity (g)

Step 1: Finding time of flight

Since the projectile is launched horizontally, there is no acceleration in the horizontal direction. Therefore, the time taken to travel the distance X horizontally is given by:

X = v * t

Solving for time (t):

t = X / v

Step 2: Finding vertical velocity at impact

Considering the vertical motion of the projectile, we can use the equation of motion to determine the final vertical velocity at impact:

v = u + gt

where:

v = final vertical velocity (which is equal to the speed of the projectile at impact)

u = initial vertical velocity (which is 0, as the projectile is launched horizontally)

g = acceleration due to gravity

t = time of flight (which we found in Step 1)

Substituting the values:

v = 0 + g * (X / v)

Step 3: Solving for speed (v)

To find the speed of the projectile, we can rearrange the equation:

v² = gX

Taking the square root of both sides:

v = √(gX)

This equation relates the speed of the projectile to the distance traveled horizontally (X) and the acceleration due to gravity (g). The height of launch (H) is not directly involved in this expression for speed.

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Explanation:

F =  9/5 C +32  

  9/5 ( 38.5) + 32 = 101.3 F  

The patient's temperature (38.5 °) in degrees Fahrenheit is 101.3 °F.

To convert a temperature from degree Celsius to degrees Fahrenheit, you can use the following formula: (Celsius * 9/5) + 32. In this case, the patient's temperature is 38.5 °C.

Applying the formula, we have: (38.5 * 9/5) + 32. Firstly, calculate 38.5 multiplied by 9/5, which is 69.3. Then, add 32 to this value: 69.3 + 32 = 101.3.

Therefore, the patient's temperature in degrees Fahrenheit is 101.3 °F. This conversion allows medical professionals to understand and compare temperatures in different units, ensuring appropriate care for the patient.

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The torque on the motor's shaft is 1.375 Nm.

We need to know about torque to solve this problem. Torque is the rotational equivalent of linear force. It can be determined as

τ = F x r

where τ is torque, F is perpendicular force and r is radius.

From the question above, the parameter given are

m = 1.1 kg

d = 25 cm

r = 12.5 cm

Convert radius to meter

r = 12.5 cm

r = 12.5 x 10¯² m = 0.125 m

Find the weight

W = m . g

W = 1.1 . 10

W = 11 N

By substituting the parameters, we get

τ = F x r

τ = 11 x 0.125

τ = 1.375 Nm

Hence, the moment applied is 1.375 Nm

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Answer:

the branch currents are as follows:

  top left: I2 = 0.625 A

  middle left: I1 = 2.500 A

  bottom left: I1-I2 = 1.875 A

  top center: I2+I3 = 2.500 A

  bottom center: I2+I3-I1 = 0 A

  right: I3 = 1.875 A

Explanation:

You can write the KVL equations:

Top left loop:

  I2(4) +(I2 +I3)(2) +I1(1) = 10

Bottom left loop:

  (I1-I2)(4) +(I1-I2-I3)(2) +I1(1) = 10

Right loop:

  (I2+I3)(2) +(I2+I3-I1)(2) = 5

In matrix form, the equations are ...

  \(\left[\begin{array}{ccc}1&6&2\\7&-6&-2\\-2&4&4\end{array}\right]\cdot\left[\begin{array}{c}I_1\\I_2\\I_3\end{array}\right] =\left[\begin{array}{c}10\\10\\5\end{array}\right]\)

These equations have the solution ...

  \(\left[\begin{array}{c}I_1\\I_2\\I_3\end{array}\right] =\left[\begin{array}{c}2.500\\0.625\\1.875\end{array}\right]\)

This means the branch currents are as follows:

  top left: I2 = 0.625 A

  middle left: I1 = 2.500 A

  bottom left: I1-I2 = 1.875 A

  top center: I2+I3 = 2.500 A

  bottom center: I2+I3-I1 = 0 A

  right: I3 = 1.875 A

_____

This can be worked almost in your head by using the superposition theorem. When the 5V source is shorted, the 10V source is supplying (I1) to a circuit that is the 4 Ω and 2 Ω resistors in parallel with their counterparts, and that 2+1 Ω combination in series with 1 Ω for a total of a 4Ω load on the 10 V source. That is, I1 due to the 10V source is 2.5 A, and it is nominally split in half through the upper and lower branches of the circuit. There is no current flowing through the (shorted) 5 V source branch.

When the 10V source is shorted, the 5V source is supplying a 4 +4 Ω branch in parallel with a 2 +2 Ω branch, a total load of 8/3 Ω. This makes the current from that source (I3) be 5/(8/3) = 15/8 = 1.875 A. There is zero current from this source through the 1 Ω resistor.

Nominally, the current from the 5V source splits 2/3 through the 2 Ω branch and 1/3 through the 4 Ω branch.

Using superposition, I2 = I1/2 -I3/3 = (2.5 A/2) -(1/3)(15/8 A) = 0.625 A. This is the same answer as above, without any matrix math.

  (I1, I2, I3) = (2.5 A, 0.625 A, 1.875 A)

__

It helps to be familiar with the formulas for resistors in series and parallel.

Answer:

I don't know

Explanation:

There is not enough info to solve this problem...

A) The velocity of the two freight car is 1.83 m/s, B) The impulse exerted on each freight train car is 22000 kg-m/s, C) The net force exerted on each freight train car is 31428.6 N.

Mass of the loaded freight car, m₁ = 10000 kg

Initial velocity of the loaded freight car, v₁ = 3 m/s

Mass of the empty freight car, m₂ = 2000 kg

Velocity of the empty freight car, v₂ = -4 m/s

Let the velocity of the coupled car after collision, = v

By the law of conservation of momentum,

m₁v₁ + m₂v₂ = (m₁+m₂)v

A) v = (10000×3 - 2000×4)/(10000+2000)

    v = 1.83 m/s

B) Impulse = change in momentum(Δp)

Δp = 10000×3 - 2000×4 = 22000 kg-m/s

C) Net force, F = Impulse/time = 22000/0.7

  F = 31428.6 N

D) The collision is inelastic as the final speed of both the car is less than their initial velocities.

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Answer:

Waves are disorders that travel through a fluid medium. Several simple wave features include frequency, period, wavelength, and amplitude.

Explanation:

Deposition is when a gaseous state changes to solid state by escaping liquid state. So I think it is 3. Liquid glass cools and hardens

A repulsive force between the two magnets causes the suspended magnet to swing to the left. Option A

We know that a magnet is any materials that has the magnetic domains in the substance being properly aligned. The implication of this is that the material is also capable of making the magnetic domains in another material to also become aligned.

The materials that can be attracted by a magnet are said to be magnetizable materials. We can see that the force that acts between two magnets can be an attractive force or repulsive force depending on the poles of the magnet that are facing each other.

Since unlike poles attract and like poles repel, the poles that have been shown in the image that is attached would repel each other.

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Answer:

Distance is 50m

Displacement is 0m

Explanation:

Distance is based on the amount of length you covered, regardless of where you end.

Displacement only considered where you started and where you ended, which is at the same spot in this case. Therefore, no displacement.

Answer:

one truck load is 2.5*1.5*1 = 3.75m^3

7/3.75 = 1.86 loads,

so 2 trips must be made.

Explanation:

the output voltage of the transformer that has 1,000 turns of wire in the primary coil and 50 turns in the secondary coil is 120 V

A transformer is an electrical device that transfer electric energy from one circuit to another.

To calculate the output voltage of the transformer, we use the formula below.

Formula:

Where:

Make V' the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, the output voltage of the transformer that has 1,000 turns of wire in the primary coil and 50 turns in the secondary coil is 120 V.

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The initial moments after the Big Bang and the current universe have a few things in common like Expansion; Radiation; Structure formation; etc.

Expansion: The universe has been expanding since the Big Bang, and this expansion is still happening. The initial moments after the Big Bang were characterized by a period of rapid inflation, and this expansion has continued to shape the structure of the universe we see today.

Radiation: The universe was filled with intense radiation in the initial moments after the Big Bang, and this radiation still exists in the form of the cosmic microwave background (CMB) radiation.

This radiation is thought to have been produced about 380,000 years after the Big Bang and has been traveling through space ever since, providing us with valuable information about the early universe.

Formation of structure: The initial moments after the Big Bang set the stage for the formation of the large-scale structure of the universe we observe today, such as galaxies, stars, and planets. The tiny fluctuations in the density of matter in the early universe were amplified by gravitational attraction over time, leading to the formation of these structures.

However, there are also many differences between the early universe and the universe as it exists now. For example, the universe was much hotter and denser in the early moments after the Big Bang, and there were no stars or galaxies yet.

The universe has also undergone many complex physical processes over billions of years, such as the formation of black holes and the evolution of stars, that were not present in the early universe.

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The velocity of the gazelle after 2 seconds is equal to 11.3 m/s.

The equations of motion have described the relationship between the time, velocity, acceleration, and displacement of a moving object.

The equations of motions can be described as shown below:

\(v = u + at\\S = ut +\frac{1}{2}at^2 \\ v^2-u^2 = 2aS\)

Given the mass of the gazelle, m = 25.2 Kg

The force acting to accelerate, F = 113N

The acceleration in the speed of gazelle is given by: a = F/m

a = 113/ 25.2

a = 4.48 m/s²

The initial speed of the gazelle, u = 2.33 m/s

From the first equation of motion we can calculate the final velocity of the  gazelle:

v = u + at

v = 2.33 + (4.48) (2)

v = 11.3 m/s

Therefore, the velocity of the gazelle 2 seconds later is 11.3 m/s.

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The feature that is true of both solar and wind power is (b) Both power sources produce no greenhouse gas emissions during normal operation.

This makes them a more environmentally friendly alternative to traditional fossil fuels, which emit carbon dioxide (CO2) and other harmful gases during combustion.

However, the other options are not completely accurate. Solar and wind power can be intermittent, but this does not necessarily mean that they require a backup energy source. Energy storage technologies, such as batteries or pumped hydro storage, can be used to store excess energy generated during times of high production and release it during times of low production.

Furthermore, while solar and wind power currently supply a small fraction of global energy demand, it is important to note that their usage is increasing rapidly. In fact, renewable energy sources, including solar and wind power, are projected to be the fastest-growing energy source over the next few decades.

In conclusion, solar and wind power's most significant shared feature is their ability to operate without producing greenhouse gas emissions. While they do have other characteristics that are sometimes associated with them, these features are not always completely accurate and may not apply in every circumstance.

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Two non-conducting rods, each carrying a charge of +1.90 μC and -1.90 μC respectively, meet at a right angle. The charges are distributed uniformly along the length of the rods.

This configuration creates an interesting scenario of charge distribution and electrostatics. The equal and opposite charges on the rods result in an electric field being generated in the region around them. The interaction between the charges causes an attraction or repulsion depending on the sign of the charges.

The electric field lines will emanate from the positive charge and terminate on the negative charge. The strength of the electric field will depend on the charge magnitude and the distance from the charges. Additionally, the electric potential will vary in the region due to the presence of these charges. This setup exhibits the principles of electrostatics and demonstrates the behavior of electric charges and their effects on the surrounding space. The interaction between the charges on the rods and the resulting electric field can be further analyzed and quantified using relevant equations and concepts from electrostatics.

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Answer:

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