When investigating a crime scene, an investigator finds bullet holes in the wall out the window,


across the street (about 100m away). These bullet holes are approximately 1. 1m off the


ground. The bullets from this particular weapon travel at a rate of 350m/s. Assuming the


weapon was fired horizontally, at what height was the weapon fired? This insight will be used to


narrow the search for a suspect.

Answer:

A? what do you mean? ahhahhhhahhahahahahahahahhahahahahaaa

Answer:

The potential energy stored in the spring is 0.018 J.

Explanation:

Given;

spring constant, k = 90 N/m

extension of the spring, x = 2 cm = 0.02 m

The potential energy stored in the spring is calculated as;

U = ¹/₂kx²

where;

U is the potential energy stored in the spring

Substitute the given values in the equation above;

U = ¹/₂  x  90 N/m  x  (0.02 m)²

U = 0.018 J

Therefore, the  potential energy stored in the spring is 0.018 J.

The pressure exerted on the record by the phonograph needle is approximately 970,367.48 pascals.

To calculate the pressure exerted on the record, we can use the formula:

Pressure = Force / Area

First, we need to calculate the force exerted by the needle. We know that the equivalent of 0.95 g is supported by the needle, so we can use the formula:

Force = mass x gravity

where mass is in kilograms and gravity is approximately 9.81 m/s². Converting 0.95 g to kilograms, we get:

0.95 g = 0.00095 kg

Therefore, the force exerted by the needle is:

Force = 0.00095 kg x 9.81 m/s² = 0.0093395 N

Next, we need to calculate the area of the needle tip. Since the tip of the needle is a circle, we can use the formula:

Area = π x radius²

where π is approximately 3.14. Substituting the values we have, we get:

Area = 3.14 x (0.175 mm)² = 0.00961925 mm²

However, we need to convert this to square meters to use in the pressure formula. Since 1 mm² = 10⁻⁶ m², we get:

Area = 0.00961925 mm² x (10⁻⁶ m²/mm²) = 9.61925 x 10⁻⁹ m²

Now we can substitute the values we have into the pressure formula:

Pressure = Force / Area = 0.0093395 N / 9.61925 x 10⁻⁹ m²

Simplifying, we get:

Pressure = 970,367.48 Pa

Therefore, the pressure exerted on the record by the phonograph needle is approximately 970,367.48 pascals.

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Answer:

questions

Explanation:

1. what type of friction is air resistance

2. what two factors affect air resistance

3.what does it mean when an object is in free fall

The capacitors are connected, each capacitor has a charge of Qdc=6C. The capacitors' capacitances are C1=1.0F and C2=2.0F, and the source's emf is equal to 10V. The potential difference between A and B is 5.0V.

You add each of the capacitances using the method below to determine the total can be of the a number more capacitors joined in this way: CTotal Equals C1 Plus C2 + C3, etc. Example: to determine the combined capacitance of these three parallel capacitors.

C1 and C2 serve as coupling capacitors primarily, letting AC signals travel while block DC at the inputs and outputs in order to prevent voltages from earlier or later circuits from upsetting the biased condition for the this amplifier.

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Hebrews migrated from an area near the persion gulf to the coast of Meridian sea.

Abraham move his people from Ur near the Persian Gulf to the coast of this body of water.

Who were Hebrews?

According to biblical tradition, the Hebrews are peoples descended from Shem, one of Noah's sons, through Eber, the eponymous ancestor, and Abraham. Gen. 7:22 f., reports that the flood destroyed all life except that in Noah's ark; consequently, the whole human family descended from Noah and his sons: Japheth, Ham and Shem. As yet, not all of the names of eponymous ancestors in the family lines can be identified,1 but some probabilities are listed in Chart 6.

From Shem, through Arpachshad and Shelah came Eber, the eponymous ancestor of the Hebrews, and from his descendants through Peleg, Reu, Sereg and Nahor came Terah, the father of Abram and his brothers Nahor and Haran. It becomes clear that if "Hebrews" are descendants of Eber, then others besides those of Abraham's line would be included (see Gen. 10:25-27).

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The distance between the 7th and the tenth second is 29.4 m.

We know that we can have to formulate the information that has been given here so as to obtain a proper progression and this would help us to get the common difference of the progression that we are looking at.

Now we know that the progression would look something like; 4.9, 14.7, 24.5 ....

We can see that this is an arithmetic progression that has a common difference of 9.8.

U7 = a + (n - 1)d

a = first term

n = Number of terms

d = common difference

U7 = 4.9 + (7 - 1) 9.8

= 63.7

U10 = 4.9 + (10 - 1) 9.8

U10 = 93.1

Between the 7th and 10th seconds, we have;

93.1 - 63.7

= 29.4 m

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Some people object to the inverted pyramid style, saying it has lost its usefulness for a variety of reasons, including- Increased reader sophistication, Lack of drama and Digital media.

The inverted pyramid style, which features the most significant information at the top and the least important at the bottom, is widely used in journalism. However, some individuals object to this style, claiming that it has lost its usefulness for various reasons, including:

Increased reader sophistication: According to some, the pyramid style is unsuitable for a more educated readership. They argue that the inverted pyramid's oversimplification of facts does not meet modern reader expectations.

Lack of drama: Because the inverted pyramid's central event is displayed at the beginning, the story can lose its drama as it unfolds. They also argue that a traditional storytelling approach is better suited for dramatic stories.

Digital media: In recent years, digital media has altered the way news is delivered and consumed. With the advent of click-bait articles and scrollable pages, the inverted pyramid is deemed less effective for digital media platforms. Instead, writers must adapt to the requirements of online audiences and deliver compelling and concise material to grab their attention. Overall, the pyramid-style may still be appropriate for certain articles. However, due to an increasing readership, a focus on storytelling, and changes in digital media, the traditional approach is losing its effectiveness.

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Answer:

417.5 kg

Explanation:

Since the gravitational for of attraction F, equals the weight of the object W when its close to the earth, F = GMm/R² = W = mg where m = mass of object and g = acceleration due to gravity close to the earth = 9.8 m/s².

g = GM/R² where  g = acceleration due to gravity close to the earth, G = universal gravitational constant = 6.67 × 10⁻¹¹ Nm²/kg², M = mass of earth = 5.927 × 10²⁴ kg and R = radius of earth = 6.4 × 10⁶ m

So, g = GM/R²

= 6.67 × 10⁻¹¹ Nm²/kg² × 5.927 × 10²⁴ kg/(6.4 × 10⁶ m)²

= 39.53 × 10¹³ Nm²/kg ÷ 40.96 × 10¹² m²

= 9.65 N/kg

≅ 9.7 N/kg

= 9.7 m/s²

Since W = 4050 N and W = mg

m = W/g = 4050 N/9.7 m/s²

= 417.53 kg

≅ 417.5 kg

So, the mass of the object is 417.5 kg

In this case, V = 10.0 J/2.00 C = 5.00 V. This is the difference in potential between points X and Y.

Potential is the ability to do or achieve something. It is the capacity to realize or achieve a desired outcome or result. Potential is an inherent power or ability that can be developed and utilized in various ways. It is the capability to become something in the future. Potential can manifest in many forms, such as physical, intellectual, emotional, or spiritual. It is the capacity to make a difference in the world and to do something great.

The difference in potential between two points is related to the amount of work done to transfer a given amount of charge in an electric field.
This is calculated by the equation V = W/Q, where V is the difference in potential, W is the work done, and Q is the charge transferred.

In this case, V = 10.0 J/2.00 C = 5.00 V. This is the difference in potential between points X and Y.

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Complete Question:
If 10.0 J of work are required to transfer 2.00 coulombs of charge from point X to point Y in an electric field, what is the difference in potential between these two points?

The correct order of electromagnetic waves from longer wavelength to shorter wavelength are D) radio waves, microwaves, infrared, visible, ultraviolet, x-rays, and gamma rays. Therefore, the correct option is D.

The electromagnetic spectrum includes the entire range of electromagnetic radiation. This range is divided into seven main categories depending on their wavelength and frequency. These categories are radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Radio waves: These are the longest wavelengths and the lowest frequency in the electromagnetic spectrum. Radio waves have a frequency of fewer than 300 GHz and wavelengths ranging from a few centimeters to a few kilometers.

Microwaves: These waves are next in order of wavelength after radio waves. The microwave wavelength ranges from a few millimeters to a few centimeters. Microwaves are used in many applications like communication, heating food, and radar systems.

Infrared: The wavelength of infrared radiation ranges from 700 nm to 1 mm. Infrared radiation is used in many applications like heating, remote temperature sensing, and security systems.

Visible Light: It is a part of the electromagnetic spectrum that is visible to the human eye. The wavelength of visible light ranges from 400 to 700 nm. The color of light changes depending on the wavelength.

Ultraviolet: Ultraviolet light has a wavelength ranging from 10 nm to 400 nm. UV light is harmful to living organisms and can cause skin cancer, eye damage, and premature aging.

X-rays: X-rays have a wavelength ranging from 0.01 nm to 10 nm. They are used in medicine and industry to produce images of the internal structures of objects.

Gamma rays: They are the most energetic waves in the electromagnetic spectrum. Gamma rays have the shortest wavelengths and the highest frequencies. They are produced by nuclear explosions, radioactive decay, and nuclear reactions.

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The gravitational pull of neighboring galaxies can cause the formation of galactic structures such as galaxy groups, galaxy clusters, and superclusters.

These structures are formed when galaxies are drawn together by their mutual gravitational attraction and can result in the formation of larger structures over time.

Additionally, the gravitational pull of neighboring galaxies can cause tidal interactions between galaxies, leading to the deformation of galactic structures and the formation of features such as tidal tails and bridges.

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Answer: 10

Explanation:

Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.

To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.

The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).

Using the equation:

v = v₀ + at

where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:

v = 0 + (0.75 m/s²) * t

v = 0.75t m/s

The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:

v = ωr

Substituting the values:

0.75t = ω * 300

Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:

ω = ω₀ + αt

ω = 0 + (0.75 m/s²) * t

ω = 0.75t rad/s

We can now substitute the value of ω into the equation:

0.75t = (0.75t) * 300

Simplifying the equation gives:

0.75t = 225t

t = 0.75 seconds

The time elapsed is 0.75 seconds.

To calculate the distance traveled (s), we can use the equation:

s = v₀t + (1/2)at²

Since the initial velocity (v₀) is zero, the equation becomes:

s = (1/2)at²

s = (1/2)(0.75 m/s²)(0.75 s)²

s = (1/2)(0.75 m/s²)(0.5625 s²)

s = 0.2119 meters or approximately 21.19 centimeters

Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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It takes approximately 2.32 seconds for the horse to decrease its velocity to 6.1 m/s.

Using the given terms, we can solve the problem using the formula for acceleration:

a = (v_f - v_i) / t

Where:
a = -1.77 m/s² (average acceleration)
v_i = 10.2 m/s (initial velocity)
v_f = 6.1 m/s (final velocity)
t = time (which we need to find)

Rearranging the formula to solve for time:

t = (v_f - v_i) / a

Substituting the given values:

t = (6.1 m/s - 10.2 m/s) / (-1.77 m/s²)
t = (-4.1 m/s) / (-1.77 m/s²)

Now, calculating the time:

t ≈ 2.32 seconds

It takes approximately 2.32 seconds for the horse to decrease its velocity to 6.1 m/s.

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Answer:

The theory of plate tectonics proposes that the Earth's outer layer, or lithosphere, is broken up into a number of large plates that interact with one another. These plates are slowly moving across the Earth's surface, driven by convection currents in the mantle below.

The mantle is the layer of the Earth that lies beneath the crust, and it is made up of hot and viscous rock. At certain depths, the mantle rock can become partially molten, and this creates convection currents. These currents are driven by the heat difference between the deeper, hotter parts of the mantle and the cooler, shallower regions.

As these convection currents move, they push against the base of the lithosphere, which is divided into several plates. The interaction between these plates creates a variety of geological features, including mountain ranges, volcanoes, and earthquakes.

The movement of the plates is hardly noticeable in human terms, with rates of movement averaging to just a few centimeters per year. However, over millions of years, these small movements can add up, leading to significant changes in the Earth's geography and climate. For example, the collision of two plates can result in the formation of a mountain range, while the separation of two plates can create a new ocean basin.

When a balloon is squeezed, the pressure inside the balloon increases. Pressure is defined as the amount of force exerted per unit area. In other words, it is the amount of force acting on a particular area.

when you step on a scale, the scale measures the force that you are exerting on the ground. Similarly, when you push on a wall, you are exerting a force on the wall. When you squeeze a balloon, you are reducing the volume of the balloon.

Since the amount of gas inside the balloon remains constant, reducing the volume means that the gas particles will be packed more closely together. This results in an increase in the number of collisions between the gas particles and the walls of the balloon.

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Answer:

60 miles

I hope it's helps you

Answer:

316800 feet or 60 miles per hour

Explanation:

it is already said in the problem 60 miles per hour

A push bicycle uses a mechanism known as the pedal-crank mechanism to convert the cyclic motion of the rider's legs into rotary motion, which is then transmitted to the wheels to move the bike forward.

The mechanism consists of the following components:

Pedals: The pedals are attached to the cranks, which are the rotating arms that connect the pedals to the bottom bracket.

Bottom bracket: The bottom bracket is the cylindrical assembly that houses the spindle and bearings, allowing the cranks to rotate around the axis of the frame.

Chain: The chain is a series of metal links that connects the pedals to the rear wheel, transmitting the power from the pedals to the wheel.

Rear wheel: The rear wheel is driven by the chain, providing the propulsion for the bicycle.

Gears: The gears are a set of cogs that can be shifted to provide a range of gear ratios, allowing the rider to control the speed and effort required to pedal the bike.

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Explanation:

Graph 1 is linear motion because it has constant velocity for some time.

Graph 2 is , if we see path over path we can see positif uniformy accelerated motion when the graph sketch to upper right and uniformly deaccelerated motion when goes down right.

But for all, the2nd graph motion looks random motion

Answer:

In geometry, parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel. Colloquially, curves that do not touch each other or intersect and keep a fixed minimum distance are said to be parallel.

In a series circuit, the current that flows through each of the components is the same, and the voltage across the circuit is the sum of the individual voltage drops across each component. ... In a series circuit, every device must function for the circuit to be complete.

In a series circuit, all components are connected end-to-end, forming a single path for current flow. In a parallel circuit, all components are connected across each other, forming exactly two sets of electrically common points.

Explanation:

I hope these helps^,^      ^_^

Given the data from the question,

A. The frequency of the wave is 0.2 Hz

B. The speed of the wave is 0.5 m/s

f = 1 / T

f = 1 / 5

f = 0.2 Hz

v = λf

v = 2.5 × 0.2

v = 0.5 m/s

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(a) The number of electrons in charge q₁ and q₂. are 12 × 10¹⁶ electrons respectively.

(b) The number of electrons in charge q₁ and q₂. are 9 × 10¹⁶ electrons and 12 × 10¹⁶ electrons respectively.

Two identical metal balls carry charges q₁ and q₂.

Now, we have:

q₁ = - q₂ = 2 × 10⁻² C

The charge, when we put them in contact is:

q = q₁ + q₂ = 2 × 10⁻² C - 2 × 10⁻² C = 0

`Now we know, that the number of electrons in one coulomb of charge is 6 × 10¹⁸.

Therefore, the number of electrons in q₁ is:

Number of electrons = 2 × 10⁻² × 6 × 10¹⁸

= 12 × 10¹⁶ electrons

Now,

q₁ = 1.5 × 10¯² C

q₂ = - 2 × 10¯² C​

Now, the number of electrons in charge q₁,

= 1.5 × 10¯² × 6 × 10¹⁸ = 9 × 10¹⁶ electrons

The number of electrons in the charge q₂ is:

= 2 × 10¯² × 6 × 10¹⁸ = 12 × 10¹⁶ electrons

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Answer:

4,500 cm per minute

Explanation:

Use the triangle of speed, distance, and time for reference.

You need the speed, so:

\(s=\frac{d}{t}=\frac{7200}{96} =75\)

We change minutes to seconds to make it a round number

Then we just multiply, 75 times 60, because there are 60 seconds in one minute. We get 4,500 cm/m.

Answer:

use ohms law for tabling.

Potential (V) = current (I) × R

Let R = 1 ohm.

table:-

V. (voltage difference) current (I)

1. 1 Volt 1A

2. 2 volt 2 A

3. 4 volt 4 A

4. 6 volt 6A

.

.

.

.

Explanation:

I know the second blank is decibels.

Answer:

the loudness of sound is called the sound wave or the volume..and it is measured in devibels(dB)

Answer:

The gravitational potential energy it had from being above the ground is converted to kinetic energy as the rock falls. As kinetic energy increases, the velocity of the rock will also increase.

Explanation:

Answer:

E = 0.93 10⁻⁶ N/C, 24º NorthEast

Explanation:

The electric force is related to the electric field by the relation

          F = q E

where the bold letters indicate vectors and q is a scalar electric charge.

Using this equation the electric force is in the same direction as the electric field.

The magnitude of the field is

          E = F / q

the charge they give us is q = 8.7 C

let's calculate

          E = 8.1 10⁻⁶ / 8.7

          E = 0.93 10⁻⁶ N / C

In summary, the magnitude of the electric field is E = 0.93 10⁻⁶ N/C and its direction is 24º NorthEast

If a person weighs 670 N on Earth, their weight on the surface of a neutron star that has the same mass as our sun and a diameter of 16.0 km would be 9.26 x 10^12 N.

To find out, we'll need to use the formula for surface gravity: g = (GM)/r²

where: g is surface gravity in N/kg, G is gravitational constant in Nm²/kg², M is the mass in kilograms, r is the radius in meters.

First, we'll need to find the mass of the neutron star using the mass of the sun, which is Ms = 1.989 x 10³⁰ kg.

M = Ms = 1.989 x 10³⁰ kg

The radius of the neutron star is 16.0 km or 16,000 m. r = 16,000 m

Now we can plug these values into the surface gravity formula:

g = (GM)/r²g = [(6.674 x 10^-11 Nm²/kg²)(1.989 x 10³⁰ kg)]/(16,000 m)²g = 1.15 x 10^12 N/kg

Finally, to find the weight of the person on the surface of the neutron star, we'll multiply their mass by the surface gravity:

weight = mgweight = (670 N)/(9.81 m/s²)weight = 68.27 kg

weight on neutron star = (68.27 kg)(1.15 x 10^12 N/kg)

weight on neutron star = 9.26 x 10^12 N

Therefore, the weight of the person on the surface of a neutron star that has the same mass as our sun and a diameter of 16.0 km would be 9.26 x 10^12 N.

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