16. What will happen If a fast-moving car making a loud noise drives away
from a person?
O A. The frequency of the sound waves reaching the person's ear will be greater
than the frequency of the waves leaving the car.
OB. The pitch of the sound being heard by the person will appear to be lower
than the pitch of the source.
OC. The pitch of the sound being heard by the person will appear to be higher
than the pitch of the source.
O D. The pitch and frequency of the sound waves reaching the person's ear will
remain unchanged.

Most of the ten million tonnes of particles known as solar wind that leave the sun each year do so through places known as coronal holes.

The corona is the name given to the outermost part of the Sun's atmosphere. Usually, the Sun's bright surface light makes the corona invisible. It gets difficult to see without using certain instruments.

A halo is a ring or light that develops around the sun or moon as a result of light from the sun or moon reflecting off ice crystals found in a thin layer of cirrus clouds. The halo is typically perceived as a dazzling, white ring, however it occasionally has colour.

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One minute has 60 seconds, One hour has 60 minutes and one day has 24 hours. Thus, 80 x 60 x 24 = 86,400 seconds in a day.

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Ampere:

Ampere is the unit of electric charge or also known as electric current.

It is defined as the flow of electric charge equal to one coulomb per second.

The symbol used for ampere is "A"

Therefore, we can conclude that the given statement is true.

"The flow of electric charge that is equal to one coulomb per second is an ampere"

The time taken for the object to reach the impact velocity is 11.87 seconds.

The time taken for the object to reach the impact velocity is calculated as follows;

v = u + gt

where;

116.34 = 0 + 9.8t

t = 116.34/9.8

t = 11.87 seconds

Thus, the time taken for the object to reach the impact velocity is 11.87 seconds.

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Answer:

h = 24.11 m

Explanation:

Given that,

The potential energy of the snowball is 520 J

The mass of the snowball is 2.2 kg

We need to find the height of the hill. The potential energy of an object is given by the formula as follows :

\(E=mgh\)

g is acceleration due to gravity

h is height of the hill

\(h=\dfrac{E}{mg}\\\\h=\dfrac{520}{2.2\times 9.8}\\\\h=24.11\ m\)

So, the height of the hill is 24.11 m.

The maximum number of 23 pieces a person could eat without exceeding 150 calories.

A calorie can be described as unit of energy. The large calorie, food calorie was originally described as the amount of heat required to raise the temperature of 1 Kg of water by one degree Celsius.

The small calorie was defined as the amount of heat required to cause the same increase in one gram of water.  In physics and chemistry, the calorie usually refers to a small unit of energy. One calorie is equal to exactly 4.184 Joules.

Given, the  234 calories contained in pieces of candy = 36

Then 150 calories contain by pieces of candy = (36/234) ×150 = 23

Therefore, a maximum number of 23 pieces someone could eat without exceeding 150 calories.

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Answer:

Objective(s): In your own words, what was the purpose of this lab?

The purpose of this lab is to get us familiar with the physical properties of different types of materials that are used for building.

Hypothesis: In this section, include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.

If we use clay brick to build the roof of the house, then the temperature inside the house will remain cooler.

If we use wood to build the walls and floors of the house, then the temperature inside the house will remain cooler.

If we use nickel to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate.

If we use iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure.

Procedure: The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome.

Using the summary questions, clearly define the dependent and independent variables of the experiment.

Data: Record the results of each of your physical property tests in the table below.

Wood _  3/10 _0 _0.12 W/(m·K)  _0 S/m _ 4 g/cm3

Clay Brick _ 2/10 _1 _0.6 W/(m·K) _ 0 S/m _ 5.88235 g/cm3

Iron _ 4/10 _10 _80 W/(m·K)  _1x107 S/m  _9.09091 g/cm3

Aluminum_ 7/10 _ 0  _235 W/(m·K) _ 3.8x107 S/m _ 6.66667 g/cm3

Copper _ 6/10 _0 _400 W/(m·K)  _3.8x107 S/m  _9.52381 g/cm3

Nickel _ 5/10 _7 _ 91 W/(m·K)  _1.4x107 S/m  _9.43396 g/cm3

Conclusion: Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

In this, I investigated the effect that different types of physical properties had on six different materials. I also investigated which materials would be the best to build a house.  

     2. What building material did you use to build your house? Did your results support or fail to support your hypotheses?

For the roof of my house, I used clay bricks. For the walls and floors of the house, I used wood. To bring electricity into the home I used nickel. To construct the latches on the windows and doors, I used iron. My results supported my hypotheses because clay bricks and wood had the lowest thermal conductivity rates, nickel had the second highest electricity conductivity rate, and iron had the highest magnetism rate.    

      3. What were the densities of the materials you chose for the walls and floor for the home in Tiny World? Why do you think a building material's density is important when building homes or architectural structures?

The density of the material I chose for the walls and floors for the home in Tiny World was 4 g/cm3 (Wood). I think a buildings material density is important when building homes or architectural structures because in order for that structure to stay stable the materials that are used must be dense. If the materials are not dense, the structure would most likely collapse if it is placed under too much pressure.

      4. Why wouldn’t you choose wood or aluminum for the latches on your house?

I wouldn’t choose wood or aluminum for the latches on my house because neither of those two materials are magnetic.

    5. Which material has the highest thermal conductivity? Which material has the highest electrical conductivity? Explain why thermal and electrical conductivity is so high with this material.

Copper has the highest thermal conductivity. Aluminum and copper have the highest electrical conductivity. Thermal conductivity is high in copper because copper is a very thin type of material, and this allows heat to pass through it easily. Electric Conductivity is high in both aluminum and copper because they are both a very thin type of metal and because they are both so thin, electricity will pass through them quickly.  

I'm sorry if any of the answers are wrong, this was just assigned to me and my teacher hasn't graded it yet.

Answer:

bring each tube close to the plastic ball and note any movement of the ball

Explanation:

study island

just took the test!!!!!

Answer:

bring each tube close to the plastic ball and note any movement of the ball

Explanation:

Electric fields can exert forces on objects, even if the objects involved are not touching. One way to demonstrate that electric fields exist around charged objects is to observe the effects of their forces at a distance.

Since the plastic ball of the electroscope is made of insulating plastic and is uncharged, it will be attracted to any charged object brought near it. So Jen can observe the effects of the tube's electric fields by bringing each tube close to the plastic ball and noting any movement of the ball. If the ball moves toward a tube, then the process that Jen used on the tube generated an electric field.

The red (660 nm) component of light emerges from the prism at an angle of 0.597° and the violet (410 nm) component of light emerges from the prism at an angle of 0.589°.

a) The angle at which the red (660 nm) component of light emerges from the prism can be calculated using Snell's law. The incident angle of the beam is 45.0° and the index of refraction of crown glass for this wavelength is 1.512.

sin i / sin r = n

where i is the incident angle, r is the angle of refraction, and n is the index of refraction.

sin i = n sin r

sin 45.0° = 1.512 sin r

r =  sin⁻¹ (sin 45.0° / 1.512)

r = 0.597°

Therefore, the red component of light emerges from the prism at an angle of 0.597°.

b) The angle at which the violet (410 nm) component of light emerges from the prism can be calculated in a similar manner. The incident angle of the beam is still 45.0°, but the index of refraction of crown glass for this wavelength is 1.530.

sin i / sin r = n

where i is the incident angle, r is the angle of refraction, and n is the index of refraction.

sin i = n sin r

sin 45.0° = 1.530 sin r

r = sin⁻¹ (sin 45.0° / 1.530)

r = 0.589°

Therefore, the violet component of light emerges from the prism at an angle of 0.589°.

In summary, the red light and violet light emerge at angles 0.597° and 0.589° respectively from the prism.

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Answer:

The ball was 1.01 seconds in the air

Explanation:

Horizontal Motion

When an object is thrown horizontally with a speed v from a height h, the range or maximum horizontal distance traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

If we know the value of d and h, we can solve the equation for v:

\(\displaystyle v=d\cdot\sqrt{\frac {g}{2h}}\)

Since the horizontal speed is constant, we can calculate the time the ball was in the air by using the equation:

\(\displaystyle t=\frac{d}{v}\)

The ping pong ball rolls from a height of h=5 m and lands on the floor a distance of d= 3 m away from the table. Calculate the speed:

\(\displaystyle v=3\cdot\sqrt{\frac {9.8}{2\cdot 5}}\)

\(\displaystyle v=3\cdot\sqrt{\frac {9.8}{10}}\)

Calculating:

\(v=2.97\ m/s\)

Now calculate the time:

\(\displaystyle t=\frac{3}{2.97}\)

\(t=1.01\ sec\)

The ball was 1.01 seconds in the air

Note: The time does not depend on the distance d at all. If we borrow the equation from free-fall motion, the time can be calculated with:

\(\displaystyle t=\sqrt{\frac {2h}{g}}=\sqrt{\frac {10}{9.8}}=1.01\ sec\)

Effective voltage for the Gi system

V = 550 KV = 550 * 10 3 * v

Current I = 4.5MA = 4.5 * 10 6 *

A The strength of the Lo to Jupiter current

P= VI\s= (550 * 10 ^ 3)(4.5 * 10 ^ 6)

K = Kilo = 10 3 M = Mega = 106

P = 24.75* 10 ^ 7 W

What is magnetic effects?

Moving electric charges and magnetic dipoles combine to form a magnetic field, which acts as a force field on other adjacent moving charges and magnetic dipoles. Given that it has both a magnitude and a direction, the magnetic field is a vector quantity.  

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The energy density of most enteral formulas is between 1.0 and 2.0 kilocalories per milliliter (kcal/mL).

The energy density of enteral formulas refers to the amount of calories (energy) contained within a given volume of the formula. Enteral formulas are specially designed liquid nutrition products used for individuals who are unable to consume food orally or have difficulty absorbing nutrients from solid food.

The energy density of most enteral formulas typically falls within the range of 1.0 to 2.0 kilocalories per milliliter (kcal/mL). This range allows for flexibility in meeting individual energy needs based on factors such as age, medical condition, and nutritional requirements.

Enteral formulas with lower energy density, such as 1.0 kcal/mL, are often used for individuals who require a lower calorie intake or have specific dietary restrictions. These formulas may be recommended for those with certain gastrointestinal disorders or conditions where a slower rate of nutrient delivery is desired.

On the other hand, enteral formulas with higher energy density, such as 1.5 or 2.0 kcal/mL, are utilized when higher calorie requirements need to be met within a smaller volume. These formulas may be beneficial for individuals with increased energy needs, such as those recovering from surgery, trauma, or severe malnutrition.

It's important to note that the energy density of enteral formulas can vary among different brands and types of products. Additionally, the choice of an enteral formula and its energy density should be made under the guidance of a healthcare professional or registered dietitian, considering the specific nutritional needs of the individual.

Hence, The energy density of most enteral formulas is between 1.0 and 2.0 kilocalories per milliliter (kcal/mL).

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As a result, the racer's final velocity is 13.00 m/s after accelerating at 0.500 m/s2 for 7.00 s.

Velocity is a vector representation of an object's or particle's displacement with respect to time. The meter per second (m/s) is the standard unit of velocity magnitude (also known as speed). Alternatively, velocity magnitude can be expressed in centimeters per second (cm/s). The direction of movement of the body or item is defined by velocity. Speed is fundamentally a scalar number. Velocity is, in essence, a vector quantity. It is the pace at which distance changes. It is the displacement rate of change.

Here,

The final velocity can be found using the equation of motion,

vf = vi + at,

where vf is the final velocity, vi is the initial velocity (11.5 m/s), a is the acceleration (0.500 m/s^2), and t is the time for which the acceleration was applied (7.00 s).

Substituting the values we get,

vf = 11.5 + 0.500 * 7.00 = 13.00 m/s.

So, the racer's final velocity is 13.00 m/s as he accelerates at the rate of 0.500 m/s2 for 7.00 s.

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Answer:

A. 30 cp. B. 60 cp. C. 200 cp. *D. 400 cp. 0

Answer:

It is 200 cp.

Explanation:

hope this helped!

Answer:

Explanation:

Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.

Answer:

Every year, the moon moves about an inch away

Average speed = total distance/time

That's 2.62 m/s .

You don't want average displacement. You want average velocity.

That's (displacement)/(time).

That's zero, because displacement = 0.

Plosive sounds are a common feature of many languages, and are often used to distinguish between different words.

When someone completely closes off the vocal tract then releases the air pressure suddenly, they have produced a sound energy known as a plosive or stop consonant.

Plosive sounds are produced by a sudden release of air pressure that has been built up behind a complete closure of the vocal tract. This closure can occur at different places in the vocal tract depending on the specific sound being produced, but common locations include the lips (for sounds like /p/, /b/, and /m/), the teeth and alveolar ridge behind the teeth (for sounds like /t/, /d/, /n/, /s/, and /z/), and the velum (for sounds like /k/, /g/, and /ng/).

When the air pressure behind the closure is suddenly released, it creates a burst of sound energy that is perceived as the plosive consonant. The specific sound produced depends on the location of the closure in the vocal tract and the amount of pressure built up behind it.

Plosive sounds are a common feature of many languages, and are often used to distinguish between different words. For example, in English, the words "pat", "bat", and "mat" are distinguished by the plosive consonants /p/, /b/, and /m/.

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Answer: Mars and Jupiter

Explanation:

The correct answer is c. friction loss develops much slower than change in velocity.

The second principle of friction loss states that as the velocity of a fluid increases, the friction loss within the system increases, but at a much slower rate compared to the change in velocity. In other words, the increase in friction loss is not directly proportional to the change in velocity. This principle is based on the fact that as the fluid moves faster, the pressure drop due to friction along the pipe walls increases, resulting in some energy loss. However, this energy loss is not as significant as the increase in velocity itself. Therefore, the friction loss develops much slower compared to the change in velocity.

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Answer: Yes the objects would be balanced.

Explanation:

If there is no net force then the object will not move in any direction, meaning that the object is balanced.

To end up with a phase difference of 6.42 rad, the smallest value L in meters should be 7.69×10⁻⁷ m.

Waves are characterized by the wavelength, frequency, and amplitude. Waves can be classified as longitudinal waves and transverse waves. Sound waves and seismic waves are examples of longitudinal waves.

Transverse waves are exemplified by electromagnetic waves.Let's solve the question given above. The smallest value L in meters should have if the waves are to end up with a phase difference of 6.42 rad.

Wavelength of light in air, λ = 681 nm = 681×10⁻⁹ mIndex of refraction of glass layer, n1 = 1.58 Index of refraction of plastic layer, n2 = 1.38

For the given condition, the phase difference between the two waves can be calculated using the formula:Phase difference = 2πΔx/λ

Here, Δx = (n1 - n2)LThe phase difference should be 6.42 rad.6.42 = 2π(n1 - n2)L/λ

On substituting the given values, we have6.42 = 2π(1.58 - 1.38)L/681×10⁻⁹

Multiplying and rearranging givesL = 7.69×10⁻⁷ mHence, the smallest value L in meters should have if the waves are to end up with a phase difference of 6.42 rad is 7.69×10⁻⁷ m.

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This question can be solved using the equations of motion. There are two scenarios where the equations of motion can be used. The first scenario is the free-fall motion of the piece of bread. The second scenario is the uniformly accelerated motion of the bird.

The acceleration of the bird is  "a = 26.13 m/s²".

First, we will calculate the time taken by the bread to fall 3 m. Using the second equation of motion for this free-fall motion:

\(h = v_it + \frac{1}{2}gt^2\)

where,

h = height fall = 3 m

vi = initial velocity = 0 m/s

g = acceleration due to gravity = 9.8 m/s²

t = time taken = ?

Therefore,

\(3\ m = (0\ m/s)t+\frac{1}{2}(9.8\ m/s^2)t^2\\t = \sqrt{\frac{(3\ m)(2)}{9.8\ m/s^2}}\\\\t = 0.78\ s\)

The bird took the same time to catch the bread. Now applying the second equation of motion to the bird's motion:

\(s = v_it + \frac{1}{2}at^2\)

where,

s = distance covered by the bird = 5 m + 3 m = 8 m

vi = initial velocity of the bird = 0 m/s

a = acceleration of the bird = ?

t = time taken = 0.78 s

Therefore, using these values we get:

\(8\ m = (0\ m/s)(0.78\ s)+\frac{1}{2}a(0.78\ s)^2\\\\a = \frac{16\ m}{(0.78\ s)^2}\)

a = 26.13 m/s²

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Sunlight (daylight) and studio (tungsten) light have different characteristics that affect the color quality of a shot.

Sunlight and studio light differ in terms of their color temperature. Sunlight, or daylight, has a higher color temperature and appears bluer, while studio light, often produced by tungsten bulbs, has a lower color temperature and appears warmer. These differences in color temperature can significantly impact the color quality tungsten and overall look of a shot.

When shooting under sunlight, the bluer light can create a cooler and more natural tone, especially during daylight hours. On the other hand, studio light with its warmer tones can create a cozy and intimate atmosphere, commonly used in indoor photography or film sets.

Photographers and filmmakers need to consider the color temperature of the light source when setting up a shot. They may adjust their camera settings or use color correction techniques tungsten to achieve the desired color balance and ensure accurate representation of colors in the final image or footage. Understanding the characteristics of different light sources allows professionals to make informed decisions in capturing the intended mood and color palette in their work.

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Answer:

746 watts

Explanation:

The given statement "The true power used or consumed in a purely capacitive circuit is zero watts" is True.

In a purely capacitive circuit, the power used or consumed is zero watts. This is because a capacitor stores energy in an electric field rather than converting it into another form of energy, such as heat or light.

When a capacitor is connected to an AC power source, it charges and discharges in a cycle, but the current flowing through the capacitor is 90 degrees out of phase with the voltage across it.

This means that the power delivered to the capacitor at any given moment is proportional to the product of the voltage and the current,

but the product of the voltage and current is zero at every moment because they are out of phase. Therefore, the average power consumed by the capacitor over one cycle is zero.

Although the power consumed by a purely capacitive circuit is zero, the circuit still plays an important role in electronics.

Capacitors can be used to filter out unwanted noise in electronic signals, store charge in electronic devices, and help regulate the voltage in power supplies.

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Answer: Due that we don't know the initial speed after hitting the ball, we are going to accept that the ball goes up for half of the time and then falls during other half part, that is 3.0 seconds each. Then we know that ball's movement is ruled by the acceleration of gravity formula, as follows: H = Vi * T + 1/2 * g * T^2 V = Vi + g * T where: H is height, Vi initial speed, g gravity acceleration and T time When we only consider the second half of the trajectory, we have that initial speed at the top of that movement is zero, because ball goes up till top, where stops and starts to go down, so : H = 0 * 3 + 1/2 * 32 * 3^2 = 144 ft. So the height of the pop-up is 144 feet.

The ball rise 144 feet high.

Due to that, we don't know the initial speed after hitting the ball, we are going to accept that the ball goes up for half of the time and then falls during another half part, which is 3.0 seconds each.

Then we know that the ball's movement is ruled by the acceleration of gravity formula, as follows: H = Vi * T + 1/2 * g * T^2 V = Vi + g * T

Where: H is height, V is initial speed, g is gravity acceleration, and T is time.

When we only consider the second half of the trajectory, we have that initial speed at the top of that movement is zero, because the ball goes up to the top, where stops and starts to go down, so:

H = 0 * 3 + 1/2 * 32 * 3^2 = 144 ft.

So the height of the pop-up is 144 feet.

Height is a measure of vertical distance, either vertical extent or vertical position

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Thermoses work by minimizing heat transfer. Heat transfer occurs in three ways: conduction, convection, and radiation. A thermos is designed to reduce all three types of heat transfer. The thermos is made up of two layers of glass with a vacuum in between, which helps to minimize heat transfer through conduction. The lid is also designed to reduce heat transfer through convection. It has a tight seal that prevents air from entering or leaving the thermos, which helps to minimize heat transfer through convection. Finally, the thermos is often coated with a reflective material that helps to reduce heat transfer through radiation. Overall, the combination of these factors makes a thermos a highly effective tool for keeping liquids hot or cold for extended periods.
Hi! Thermoses work because they minimize three main kinds of heat transfer: conduction, convection, and radiation. The design of a thermos includes a vacuum layer between the inner and outer walls, which prevents conduction and convection. The reflective coating on the inner wall reduces heat transfer through radiation. By minimizing these types of heat transfer, thermoses effectively keep hot liquids hot and cold liquids cold for an extended period.

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