you want to find the distance to a star by comparing it's intrinsic brightness (this is usually hard to figure out) to it's apparent brightness (this is easily measured by just looking). a good candidate to use this method to find distance would be

Answer:

Explanation:

The equation for momentum is p = mv; therefore,

p1 = 50(4) so

p1 = 200

p2 = 50(5) so

p2 = 250

The impulse, the change in the momentum, is 50, going in the same direction.

The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.

The ratio of their speeds is 2:1 .

As we know that from question, Alphonse and Beryl always pass each other at the same three places on the track and since they each run at a constant speed, then the three places where they pass must be equally spaced on the track. It means that the three places divide the track into three equal parts. Since, it is not told which runner is faster, so it can be assumed that Beryl is the faster runner.

Now, Start at one place where Alphonse and Beryl meet. that we know the relative positions of where they meet, but we do not actually have to know where they started at the very beginning.

Now, To get to their next meeting place, Beryl runs farther than Alphonse ,since she runs faster than he does,

So Beryl must run 2/3 of the track while Alphonse runs 1/3 of the track in the opposite direction, since the meeting places are spaced equally at 1/3 intervals of the track. Since Beryl runs twice as far in the same length of time, then the ratio of their speeds is 2:1.

Hence the ratio of their speeds is 2:1 .

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The length of the shadow of the object decreases as the sun position changes from down to top in the sky.

The size of the object does not depend on its size; rather, the shape of the object determines the shape of the shadow cast by it.

As the light source's position changes, so does the object's size. The shadow is cast in the opposite direction from how the body is illuminated by the sun.

The sun is low in the sky as evening approaches. The shadows cast by the object are longer and to the east because the sun's rays fall vertically.

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The final speed of the motorcycle is: 67 m/sec

Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route. In other words, although velocity is a vector, speed is a scalar quantity.

Given that,

initial speed of the motorcycle, u=25 m/sec

Acceleration of the motorcycle, a = 7 m/sec²

According to the equation of motion,

v = u + at

v = 25 m/sec + (7m/sec²) × (6 sec)

v = 67 m/sec

Thus, final speed of the motorcycle is: 67 m/sec

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Answer:

8 meters

Explanation:

40/ 5 = 8

Answer:

Explanation:

Compared to a coastal location of the same elevation and latitude, an inland location is likely to have **cooler summers and warmer winters** . Coastal climates tend to have wetter winters and drier summers, whereas inland climates have more humid summers and drier winters . Coastal climates are typically limited to narrow strips along the edges of continents, whereas inland climates tend to occur over broad swaths of continental interiors .

I hope this helps answer your question!

(a) The number of waves on the diagram is 2.

(b) The period of the of the oscillation of the wave is 0.4 second.

(c) The frequency of the wave is 2.5 Hz.

The number of waves on the diagram is determined by calculating the number of cycles.

number of waves = 2

The period of the of the oscillation of the wave or the time taken to make a complete cycle is calculated as;

T = 0.4 seconds

The frequency of the wave is the reciprocal of the period of the wave and it is calculated as follows;

f = 1/T

f = 1 / 0.4

f = 2.5 H

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The other cars across from you go first because you are at a traffic light and your light is red and their light is green.

Or

Since they are across from you both of you are going straight so he can go first

Hope this helps!  : )

Answer:

charging by friction

Explanation:

Friction is another method of making a charge become higher than the other.

With either straw or a fur,charging by friction is used.

Yes

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Elasticity is of significant importance in the everyday lives of businesses and consumers as it helps them understand and respond to changes in prices and demand for goods or services. By considering elasticity, businesses can make informed decisions regarding pricing strategies, production levels, and resource allocation. Consumers, on the other hand, can assess the impact of price changes on their purchasing decisions and adjust their consumption patterns accordingly.

Elasticity, specifically price elasticity of demand, measures the responsiveness of consumer demand to changes in price. It indicates the percentage change in quantity demanded resulting from a one percent change in price. Understanding price elasticity allows businesses to determine how sensitive consumers are to changes in price and adjust their pricing strategies accordingly.

For example, let's consider the market for gasoline. Gasoline is a highly price-sensitive good, meaning that changes in its price have a significant impact on consumer demand. If the price of gasoline increases, consumers may reduce their consumption and seek alternatives such as carpooling or using public transportation. In this scenario, businesses need to consider the price elasticity of gasoline to predict and respond to changes in consumer behavior. They might lower prices to stimulate demand or introduce more fuel-efficient options to cater to price-conscious consumers.

In conclusion, elasticity matters because it provides valuable insights into the dynamics of supply and demand, enabling businesses and consumers to make informed decisions in response to price changes. By understanding elasticity, businesses can adapt their strategies to maintain competitiveness, while consumers can optimize their purchasing choices based on price sensitivity.

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The transportation of weathering products by wind, water flow, or ice flow is called erosion.

A geological process called erosion involves the removal and movement of rock and soil by forces of nature including wind, water, and ice. Gravity, climatic patterns, and the characteristics of the materials are only a few of the variables that influence the process. Depending on the scope and severity of the process, erosion may have both good and negative consequences on the ecosystem. While erosion can result in beautiful natural features like canyons and waterfalls, it can also degrade the soil, pollute the water, and result in land loss. For the management of natural resources and the reduction of erosion's detrimental effects on the environment, understanding erosion is crucial.

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The transportation of weathering products by wind, water flow, or ice flow is called______.

The correct answer about density is 2.91 g/mL.

Density = Mass / Volume

Density = 58.2 g / 20 mL

Density = 2.91 g/mL

Thus, we can conclude that by dividing mass of the object by volume of the object, we will find the density of the object.

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Explanation:

h(t) = -16t²+vt+h

v=initial velocity

h=initial height

h(t) = -16t²+104t+0 because the ball is thrown upward from the ground

t = -104/2(-16)

t = -104/-32

t = 3.25 seconds is when it reaches its maximum height

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A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

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Answer:

the vertical velocity is constant.

Explanation:

The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical acceleration caused by gravity; thus, the vertical velocity of a projectile changes. and the horizontal motion of a projectile is independent of its vertical motion.

When two objects rub against each other, the friction created transfers the electrons from one object to the other, causing a buildup of static electricity.

When two objects rub against each other, the friction created transfers the electrons from one object to the other, causing a buildup of static electricity. Rubbing two objects together can cause a transfer of electrons between them, and this is called the triboelectric effect. The movement of electrons from one object to the other is due to the difference in their electron affinity, or the ease with which they can give up or accept electrons.

The object that has the greater affinity for electrons will take electrons from the other object, causing the other object to become positively charged while the object that gained electrons will become negatively charged. This buildup of static electricity can be seen in everyday life when we rub our feet on carpet and touch a metal doorknob, resulting in a shock.

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Answer:

I think your answer would be D

Explanation:

The shoe tip's angular velocity is 34.74 rad/s. The maximum range of the football neglecting air resistance is 50.07 meters.

a. We may apply the formula to get the angular velocity of the shoe tip:

v = ωr

Substituting the values, we get:

ω = v / r = 33 m/s / 0.95 m = 34.74 rad/s

b. To find the average force exerted on the football, we can use the impulse-momentum theorem, which states that:

Impulse = Change in momentum

The impulse is given by the formula:

Impulse = FΔt

Δp = mΔv

Substituting the values, we get:

FΔt = mΔv

F = mΔv / Δt = (8.5 kg)(22 m/s - 0 m/s) / (0.02 s) = 9350 N

Therefore, the average force exerted on the football is 9350 Newtons.

c. To find the maximum range of the football neglecting air resistance, we can use the range equation, which is given by:

R = (\(v^2\)/g) * sin(2θ)

Since the football is being kicked, we can assume that it is projected at an angle of 45 degrees to the horizontal, which gives:

\(R = (22 m/s)^2 / (2*9.81 m/s^2) * sin(90\textdegree ) = 50.07 meters\)

Air resistance, also known as drag, is a force that opposes the motion of an object as it moves through the air. When an object moves through the air, it collides with air molecules, causing them to move out of the way and create a region of low pressure behind the object. This creates a force that acts in the opposite direction of the object's motion, slowing it down.

The amount of air resistance an object experiences depends on its size, shape, and speed, as well as the properties of the air through which it is moving. For example, streamlined objects like airplanes and rockets are designed to minimize air resistance in order to maximize their speed and efficiency.

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No net force is experienced. To find the magnitude of the net gravitational force exerted by the two larger masses on the 60.6 kg mass, we can use the equation for gravitational force.

Gravitational force equation:

F = G * (m1 * m2) / r^2

Where F is the gravitational force, G is the universal gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them.

In this case, m1 = 232 kg, m2 = 538 kg and r = 0.342 m.

So, F = G * (232 kg * 538 kg) / (0.342 m)^2

Plugging in the values, we get:

F = 6.672 x 10^-11 N*(m^2)/(kg^2) * (232 kg * 538 kg) / (0.342 m)^2

The magnitude of the net gravitational force exerted by the two larger masses on the 60.6 kg mass is 0.092 N.

To find the distance at which the 60.6 kg mass experiences a net force of zero, we can use the equation for the gravitational force between two masses. Since the force is inversely proportional to the square of the distance between the masses, we can set the force to zero and solve for the distance.

F = G * (232 kg * 60.6 kg) / (r)^2 = 0

r = √((232 kg * 60.6 kg) / (G))

r = √((232 * 60.6) / (6.672 * 10^-11))

r = 2.36*10^-5 m

At this distance, the 60.6 kg mass experiences no net force from the two larger masses, as the gravitational force exerted by the 232 kg mass balances out the gravitational force exerted by the 538 kg mass.

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A. The earthquake occurrences lined up with the mid-ocean ridges. The pattern was found by Marie Tharp while analyzing the Howard Foster's data on earth quake and seismic activity in the Atlantic.

At mid-ocean ridges, hot magma that has just emerged from the mantle is pushing the plates apart. Earthquakes happen along the cracks that form as the plates separate. Examples include the East African Rift and mid-ocean ridges where two oceanic plates are separating, like the areas close to the Azores and Iceland.

The first comprehensive map of the world's ocean floors was released by Tharp and Heezen in 1977. Through their research, the up until that point debatable theory of plate tectonics which states that continents shift through time became more widely accepted. Our knowledge of almost everything on Earth has changed as a result of the finding.

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What is the relationship between howard foster's data about earthquake occurrences and marie tharp's data about mid-ocean

ridges?

A) the earthquake occurrences lined up with the mid-ocean ridges.

B) mid-ocean ridges are in south america and africa. earthquakes can happen anywhere.

C) earthquakes occur on land while mid-ocean ridges are underwater.

D) the mid-ocean ridge was formed at the exact same time that earthquakes occurred.

Answer:

A) 5 × 1011nm

I think It's A

Answer:A.

i know its a, i did quiz

Hi Phoebe, I'm Sasha and I'm also 12 years old and here's the answer your looking for

Answer:

Particles are, by their very nature, attracted to particles with an opposite charge, and they repel other similarly charged particles. This prevents electrons from ever coming in direct contact (in an atomic sense and literal sense). Their wave packets, on the other hand, can overlap, but never touch.

V = sqrt(P * R)Substituting the given values, we get:V = sqrt(5.0 W * 15 kΩ)V = sqrt(75 kJ) ≈ 273 V Therefore, the maximum allowable potential difference across the terminals of the resistor is approximately 273 V.

In order to determine the maximum allowable potential difference across the terminals of a resistor, you need to make use of the power rating of the resistor, which is given in the question. The power rating of a resistor is the maximum amount of power it can dissipate without overheating and getting damaged. It is denoted by the symbol P.To find the maximum allowable potential difference, you need to use the following formula:P = V^2 / Rwhere:P = power rating of the resistorV = potential difference across the resistorR = resistance of the resistorRearranging the formula to solve for V, we get:V = sqrt(P * R)Substituting the given values, we get:V = sqrt(5.0 W * 15 kΩ)V = sqrt(75 kJ) ≈ 273 VTherefore, the maximum allowable potential difference across the terminals of the resistor is approximately 273 V.

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Answer:

true

Explanation:

they can cause skin damage

The person could pedal a bicycle for a distance of 1466.1 km.

One gram of gasoline contains 44 KJ of energy, and one gal of gas

has a mass of 3.2 kg.

1.2 gal of gas = 3.84 kg = 3480 g

        E = (3.84 kg ) (1000g/1Kg ) (44 KJ/1g ) (1000J/KJ ) =  168.9 x 10^6 J

        t = E/p

        t = 168.9 x 10^6 J/480 W

        t = 351.87 x 10^3 sec

        t = (351.87 x 10^3 s )(1hr/3600 )

        t = 97.74 hr

         X = vt

            = ( 15 km/hr ) ( 97.74 h )

            = 1466.1 Km

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Answer:

4.43 m/s

Explanation:

The radius of circle is = 2m

Acceleration due to gravity is = 9.8 m/s²

To find the speed the stone move for its centripetal acceleration to be equal to the acceleration due to gravity will be;

a=v²/r   where a is acceleration due to gravity and r is radius of the circle

9.8 =v²/2

9.8 *2 = v²

19.62 = v²

√19.62 =v

4.43 m/s = v

The required velocity is  4.4 m/s.

The centripetal acceleration is given by the formula;

ac= v^2/r

v = linear speed

r = radius of the circular path

We are looking for the velocity at which ac = g = 9.8m/s^2

We already have the radius of the circular path as 2.0 meters

9.8 m/s^2 = v^2/2 m

v = √2(9.8)

v = 4.4 m/s

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Answer:

Longshore drift has a very powerful influence on the shape and composition of the coastline. It changes the slopes of beaches and creates long, narrow shoals of land called spits, that extend out from shore. Longshore drift may also create or destroy entire “barrier islands” along a shoreline.