PLEASE HELP!!! WILL GIVE 30 POINTS!! HAS TO BE CORRECT!


The picture below shows a solar event in the sun's atmosphere.


Which of these events is most likely to occur as a result of the solar event pictured above?


Disruption to electricity power grid

Less aurora activity at the poles

The sun's photosphere would be blocked

The sun's magnetic effect would decrease

Answer:

a) They both hit the ground at the same time

b) Watermelon will hit first, since its speed is faster than the pumpkin speed

c) h = 29,6 m

d)t = 3,02 sec

Explanation:

Equations for fall free movement are:

vf = v₀ + g*t       when   v₀ = 0   (dropped case)  vf = g*t

h = v₀*t + 1/2*g*t²

a) For both ( watermelon and pumpkin) the equation of speed is the same:

vf = g*t²    Both will have the same speed second through second

They both hit the ground at the same time

b) Now is watermelon is thrown with v₀ = 10 m/s

Watermelon will hit first since its speed is faster than the pumpkin speed

vf(watermelon) =  10 + g*t

vf₂ (pumpkin)   =  g*t

c) h = v₀*t + (1/2)*g*t²

h = (10)*1 + (1/2)*9,8*1

h = 10 + 19,6

h = 29,6 m

d)  h = g*t

t = 29,6/9,8

t = 3,02 sec

Answer:

distance is not a vector. it is scalar

Each link's speed of light propagation latency is 3x108 meters per second. Assume a 4.2 millisecond packet duration of 8000 bits.

The speed of light, a known physical constant with a frequency of 299,792,458 kilometers per second, is the rate at which electromagnetism moves through a vacuum.

Everything would be slowed if the speed of the light were to be decreased, and just as in a moving picture, you wouldn't perceive it. Therefore, altering this same speed of light wouldn't change anything.

For Link 1,

Propogation Delay = (3 * 103) / (3 * 108)

= 0.00001 seconds

Transmission Delay = (120000) / (100 * 106)

= 0.0012 seconds

For Link 2,

Propogation Delay = (500 * 103) / (3 * 108)

= 0.001666667 seconds

Transmission Delay = (120000) / (1000 * 106)

= 0.00012 seconds

For Link 3,

Propogation Delay = (1 * 103) / (3 * 108)

= 0.000003333 seconds

Transmission Delay = (120000) / (100 * 106)

= 0.0012 seconds

Thus, total delay

= 0.00001 + 0.0012 + 0.001666667 + 0.00012 + 0.000003333 + 0.0012

= 0.0042 seconds

= 4.2 milliseconds

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Mona's conclusion that convection is the main way that energy escapes from the water when there is no lid may or may not be a good conclusion, depending on the context and information provided.

Convection is a process of heat transfer that involves the movement of fluids (in this case, the water) due to differences in temperature. It occurs when warmer portions of the fluid rise and cooler portions sink, creating a circulating flow.

To determine if Mona's conclusion is valid, additional information is needed. Factors such as the presence of other heat transfer mechanisms (such as radiation or evaporation), the specific setup of the experiment, and the conditions under which the observations were made are essential.

If Mona's experiment only considered convection as the primary mechanism for energy escape and excluded other factors, her conclusion might be incomplete or inaccurate. To draw a more comprehensive conclusion, it is necessary to consider other potential heat transfer mechanisms and perform further investigations or provide additional supporting data.

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Answer:

The value is \(R = 0.321 \ \Omega\)

Explanation:

From the question we are told that

   The diameter is  \(d = 8.252 \ mm = 0.008252 \ m\)

    The length of the wire is  \(l = 1.0 \ km = 1000 \ m\)

   Generally the cross sectional area of the copper wire is mathematically represented as

           \(A = \pi * \frac{d^2}{4}\)

=>        \(A = 3.142 * \frac{ 0.008252^2}{4}\)

=>         \(A = 5.349 *10^{ - 5} \ m^2\)

Generally the resistance is mathematically represented as

      \(R = \frac{\rho * l }{A }\)

Here \(\rho\) is the resistivity of copper with the value  \(\rho = 1.72*10^{-8} \ \Omega \cdot m\)

=>    \(R = \frac{1.72 *10^{-8} * 1000 }{5.349 *10^{ - 5} }\)

=>    \(R = 0.321 \ \Omega\)

Lenses, which are pieces of curved, clear glass, were employed in early telescopes to focus light.

Curved mirrors are used by the majority of telescopes nowadays to collect light from the night sky. Light is focused by a telescope's mirror or lens' shape.

Astronomers use a telescope to observe distant things. Curved mirrors are used by the majority of telescopes, including all large telescopes, to collect and concentrate light from the night sky.

The original telescopes employed lenses, which are simply curved pieces of clear glass, to focus light. The "optics" of a telescope are the mirrors or lenses. Strong telescopes may view objects that are extremely faint and incredibly far away.

Therefore, Lenses, which are pieces of curved, clear glass, were employed in early telescopes to focus light.

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Explanation:

To derive an equation you must indicate the variable you want to solve for.

Here we have tension of an object A and Tension 1.

Two variables or unknown are given hence we cannot derive any other equations.

Answer:

Explanation:

conservation of momentum

m(u) + M(0) = (m + M)v

u = (m + M)v/m

u = (0.250 + 1.35)(11.9) / 0.250

u = 76.16

u = 76.2 m/s

That's a fairly massive, and slow, bullet.

The final momentum of the artist-clay system immediately after collision is -82 kgm/s.

Assuming that the initial momentum of the clay was 3.0 kgm/s and the initial momentum of the potter was -85 kgm/s, we can use the law of conservation of momentum to find the final momentum of the artist-clay system immediately after the collision:

Initial momentum = Final momentum

(3.0 kgm/s) + (-85 kgm/s) = Final momentum

-82 kg×m/s = Final momentum

Therefore, the final momentum of the artist-clay system immediately after the collision is -82 kgm/s.

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Answer:96.1

Explanation:

Answer:

The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals.

Explanation:

The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals.

Answer:

Explanation:

H = V² / (2·g)

H = 12² / (2·9.8) ≈ 7,3 m

Answer:

By conservation of energy,

Kinetic energy of launched rocket = change in potential energy of rocket at maximum height.

→ Ig h is maximum height reached:

An equation for the velocity of the cart v as a function of time t is v(t) = -dw sinwt

Velocity, a physical entity quantifying the rate at which an object alters it's location over a precise duration, stands as a vector quantity with both magnitude and direction.

Conventionally expressed in meters per second (m/s) or equivalent units of stretch distance versus duration, average velocity is worked out by partitioning an object's displacement over the time taken to complete said displacement. The formula for the same is quite simple:

Average Velocity = Displacement / Duration

Wherein, Displacement reflects the alteration in position of an object, and span denotes the interval consumed during that change.

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Answer:

In a normal body cell, the processes that are necessary for continued growth and division is referred to as cell cycle. Cell cycle is the procedure by which cells divide and grow, consisting of specific step by step phases. INTERPHASE is the phase in which the dividing cells spends most of the time resting as it grows to prepare for cell division.

Answer:

a

The mass is  \(m_2 =21.75*10^{-27} \ kg\)

b

The velocity is  \(v_2 = 3.0*10^{6} m/s\)

Explanation:

From the question we are told that

     The speed of the protons is  \(u_1 = 2.10*10^{7} m/s\)

     The mass of the protons is  \(m\)

     The speed of the rebounding protons are \(v_1 = -1.80 * 10^{7} \ m/s\)

The negative sign shows that it is moving in the opposite direction

Now according to the law of energy conservation mass of one nucleus of the unknown element. is mathematically represented as

        \(m_2 = [\frac{u_1 -v_1}{u_1 + v_1} ] m_1\)

Where \(m_1\) is the mass of a single proton

          So substituting values

       \(m_2 = \frac{2.10 *10^{7} - (-1.80 *10^{7})} {(2.10 *10^7) + (-1.80 *10^{7})} m_1\)

        \(m_2 =13 m_1\)

The mass of on proton is  \(m_1 = 1.673 * 10^{-27} \ kg\)

So     \(m_2 =13 ( 1.673 * 10^{-27} )\)

        \(m_2 =21.75*10^{-27} \ kg\)

Now according to the law of linear momentum conservation the speed of the unknown nucleus immediately after such a collision is mathematically evaluated as

      \(m_1 u_1 + m_2u_2 = m_1 v_1 + m_2v_2\)

Now  \(u_2\) because before collision the the nucleus was at rest

So

        \(m_1 u_1 = m_1 v_1 + m_2v_2\)

=>    \(v_2 = \frac{m_1(u_1 -v_1)}{m_2}\)

Recall that \(m_2 =13 m_1\)

So

       \(v_2 = \frac{m_1(u_1 -v_1)}{13m_1}\)

=>         \(v_2 = \frac{(u_1 -v_1)}{13}\)

substituting values

              \(v_2 = \frac{( 2.10*10^{7} -(-1.80 *10^{7}))}{13}\)

              \(v_2 = 3.0*10^{6} m/s\)

The value added by the baker is $3. The bread's contribution to GDP is the final sale price of the bread, which is $6

In this scenario, each person involved in the production and sale of the bread adds value to the final product. The concept of value added refers to the increase in the market value of a product at each stage of production.

The farmer grows the wheat and sells it for $1. The value added by the farmer is $1.

The miller processes the wheat into flour, increasing its value. The miller sells the flour to the baker for $3, so the value added by the miller is $3 - $1 = $2.

The baker uses the flour to make bread, further adding value to the product. The baker sells the bread to the engineer for $6, so the value added by the baker is $6 - $3 = $3.

The engineer consumes the bread, but since no further economic value is added, there is no additional value added by the engineer.

The bread's contribution to GDP (Gross Domestic Product) is the final sale price of the bread, which is $6. GDP measures the total value of all goods and services produced within a country's borders, and the sale of the bread represents the final output of the production chain.

Overall, the value added at each stage contributes to the final price of the bread, and the final sale price of the bread represents its contribution to GDP.

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The impulse is needed to stop a 10 kg bowling ball moving at 6 m/s² is (F)= 60N.

The force phenomena means that a object of mass is struck by some external thing and move a distance then it is called a force. It is a vector quantity. It can be measured in Newton, Dyne.

To calculate the force we are using the formula here is newtons first law of motion, F=ma

Now we are given,

m= The mass of the object. =10kg.

a =The acceleration of the object =  6 m/s².

we have to calculate the values of force= F N.

Now we put the values in above equation,

F=ma

Or, F= 10*6

Or, F= 60N

According to the formula we can say that, The impulse is needed to stop a 10 kg bowling ball moving at 6 m/s² is (F)= 60N.

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What impulse is needed to stop a 10 kg bowling ball moving at 6 m/s²?

The masses of the two objects MA and MB in the binary system are 4 Mo respectively.

The masses of binary systems can be calculated using Kepler's laws of planetary motion and observations of the system.

Let's denote the masses of the two objects as MA and MB, where MA is the mass of object A and MB is the mass of object B. We know that the total mass of the binary system is 8 Mo, so:

MA + MB = 8 Mo

We also know that the ratio of the distances between the two objects is 1/3. Let's denote the distance between the two objects as d, so we have:

d(A to B) / d(Binary System) = 1/3

We can simplify this equation by using the fact that the distances between the objects and the binary system add up to the total distance between the objects:

d(A to B) + d(B to binary system) = d(Binary system)

Since we know the ratio of the distances, we can substitute 1/3d for d(B to binary system):

d(A to B) + 1/3d = d(Binary system)

3d(A to B) + d = 3d(Binary system)

Substituting d(A to B) for d(Binary system) - d(B to binary system), we get:

3d(A to B) + d = 3(d(A to B) + d(B to binary system))

2d(A to B) = 2d(B to binary system)

d(A to B) / d(B to binary system) = 1

So the two objects are at the same distance from the binary system center of mass. This means that the masses of the two objects are equal:

MA = MB

Substituting this into the first equation, we get:

2MA = 8 Mo

MA = MB = 4 Mo

Therefore, the mass of each object is 4 Mo.

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The child must use a wrench that is at least 20 centimeters long to remove the nut with the maximum force they can exert.

The torque exerted by the child must be equal to or greater than the required torque of 10 N·m to remove the nut. The formula for torque is torque = force x length x sin(theta), where theta is the angle between the force and the wrench.

Rearranging the formula, we can find the required length of the wrench by dividing the required torque by the force and the sin of the angle.

Length = Torque / (Force x sin(theta))

Using the given values, we get:

Length = 10 N·m / (50 N x sin(90°))

sin(90°) = 1

Length = 0.2 meters or 20 centimeters

Therefore, the child must use a wrench that is at least 20 centimeters long to remove the nut with the maximum force it can exert.

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The weight of a 190 lb person is 844.5 N.

Newton is the SI (International System) unit of force, named after Sir Isaac Newton, a famous physicist, and mathematician. It is defined as the force required to accelerate a mass of one kilogram at a rate of one meter per second squared (1 N = 1 kg m/s²).

To convert pounds (lb) to Newtons (N), we need to use the conversion factor:

1 lb = 4.45 N

Therefore, a 190 lb person weighs:

190 lb × 4.45 N/lb = 844.5 N

So the weight of a 190 lb person is 844.5 N.

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It's important to note that without the specific distances provided in the figure, it is not possible to provide the exact numerical value of the net electric field at point P.

To find the net electric field at point P, we need to consider the contributions from each of the four point charges. The electric field from a point charge is given by Coulomb's law:

\(E = k * (Q / r^2)\)

Where:

E is the electric field,

k is the electrostatic constant (\(k = 8.99 * 10^9 N \∙ m^2/C^2\)),

Q is the charge of the point charge, and

r is the distance between the point charge and the point where the electric field is being calculated.

Let's consider each point charge one by one:

1. The charge at the top left:

The electric field at P due to this charge is directed to the right. Its magnitude is given by:

\(E1 = k * (Q / r^2) = 8.99 * 10^9 N \∙ m^2/C^2 * (5.0 * 10^-^6 C) / (0.06 m)^2\)

2. The charge at the top right:

The electric field at P due to this charge is directed to the left. Its magnitude is given by:

\(E2 = k * (Q / r^2) = 8.99 * 10^9 N \∙ m^2/C^2 * (5.0 * 10^-^6 C) / (0.04 m)^2\)

3. The charge at the bottom left:

The electric field at P due to this charge is directed upward. Its magnitude is given by:

\(E3 = k * (Q / r^2) = 8.99 * 10^9 N \∙ m^2/C^2 * (5.0 * 10^-^6 C) / (0.08 m)^2\)

4. The charge at the bottom right:

The electric field at P due to this charge is directed downward. Its magnitude is given by:

\(E4 = k * (Q / r^2) = 8.99 * 10^9 N \∙ m^2/C^2 * (5.0 * 10^-^6 C) / (0.1 m)^2\)

Once we have calculated the electric fields due to each point charge, we can add them vectorially to obtain the net electric field at point P. Since the electric fields have different directions, we need to take into account their signs.

Net electric field at\(P = E1 - E2 + E3 - E4\)

Performing the calculations and taking into account the signs, we can determine the net electric field at point P.

It's important to note that without the specific distances provided in the figure, it is not possible to provide the exact numerical value of the net electric field at point P.

The calculations outlined above allow for the determination of the magnitude and direction of the net electric field, but the specific numerical value depends on the distances between the charges and point P.

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You are working for a manufacturing company, which is mathematically given as

a)

Generally, the equation for the force of equilibrium is mathematically given as

F=2fcos\theta

Therefore

\(K(npq^2/a^2)=2\frac{kmpq^2}{a\sqrt{2}^2}0.5\\\\np=mP/ \sqrt{2}\\\\where n=3\)

\(m=3\sqrt{2}\)

b)

By force equilibrium

\(K(npq^2/(2a^2))=2*\frac{kmpq^2}{a\sqrt{5a}^2}* \frac{2a}{\sart{5a}}\)

Therefore

\(n/4=2/5*m*2/\sqrt{5}\\\\m= \frac{5\sqrt{5}}{16}\\\\\\\\\)

\(m=\frac{15\sqrt{5}}{16}\)

c)

\(K(npq^2/x^2)=2\frac{kmpq^2}{a\sqrt{x^2+a^2}^2}0.5*x/\sqrt{x^2+a^2}\)

x^2+a^2=(14/3)^{2/3}x^2

x=a/1.338

x=0.747a

d)

By force equilibrium

\(K(npq^2/x^2)=2\frac{kmpq^2n}{\sqrt{x^2+a^{3/2}}^2}\\\\n/x^2=\frac{2mx}{(x^2+a^2)^{3/2}}\)

\(m/n=\frac{(x^2+a^2)3/2}{x^3}\)

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Answer:

A battery works because of the electrical energy inside of the battery, which is connected through a wire, which transmits energy through the metal inside of the wire to power to object that the wire is connected to.

Explanation:

100

Explanation:

cause 400-300 : 100 pray it's correct

Answer:

c) The pitch of the two sirens sounds the same to you

Explanation:

The pitch does not depend on the distance of the object from the observer.

As per the given data

pitch = frequency

Frequency = \(f_{0}\)  \(\frac{V +- V_{0}}{V +- V_{s}}\)

\(f^{'}\) = \(f_{0}\)  \(\frac{V }{V - V_{s}}\)

Hence, the pitch of the two sirens remains the same for the observer.

Answer:

c) The pitch of the two sirens sounds the same to you

Explanation: