Name any two medium which states about the weather report.

Answer:

Acceleration = 5.77 m/s²

Distance cover in 13 seconds = 487.56 meter

Explanation:

Given:

Final velocity of mobile device = 75 m/s

initial velocity of mobile device = 0 m/s

Time taken = 13 seconds

Find:

Acceleration

Distance cover in 13 seconds

Computation:

v = u + at

75 = 0 + (a)(13)

13a = 75

a = 5.77

Acceleration = 5.77 m/s²

s = ut + (1/2)(a)(t²)

s = (0)(t) + (1/2)(5.77)(13²)

Distance cover in 13 seconds = 487.56 meter

Take into account that the momentum p is given by the following formula:

where,

p: momentum of the bat = 0.86 kg*m/s

m: mass = ?

v: speed of the bat = 2.9m/s

Solve the previous equation for m, replace the values of v and p, and simplify:

Hence, the mass of the bat is approximately 0.30kg

Answer: I think the answer is D

Explanation: The sun is at a fixed place with respect to solar system but, still it appears to rise and set.​

The sun is at a fixed place with respect to solar system but, still it appears to rise and set.​ - This  fact proves that the earth rotates. Hence, option (d) is correct.

When a spherical, three-dimensional object rotates around an invisible line inside of its center, it is a relatively common type of rotation. This focal point is known as an axis. Basketballs in motion revolve around an axis. Axially rotating globes are used. The Earth itself has an axis of rotation.

The axis of the Earth is vertical, which means it moves up and down. (A rolling log, on the other hand, runs sideways and has a horizontal axis.) The North and South Poles are on opposite sides of the Earth's axis. The Earth completes one full rotation of this invisible line in 24 hours, or one day.

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Answer:

There are many examples of electrostatic phenomena, from those as simple as the attraction of the plastic wrap to one's hand after it is removed from a package to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and photocopier & laser printer operation

(A) For the system consisting of the two blocks, the change in the kinetic energy of the system is equal to work done by gravity on the system.

(D) For the system consisting of the two blocks, the pulley and the Earth, the change in the total mechanical energy of the system is zero.

The total initial mechanical energy of the two block system is calculated as follows;

\(m_1gh_1 + \frac{1}{2} m_1v_1_i^2 = m_2gh_2 + \frac{1}{2} m_2v_2_i^2\\\\m_1gh_1 + 0 = m_2gh_2 + 0\\\\m_1gh_1 = m_2gh_2\\\\m_1gh_1 - m_2gh_2 = 0\)

When the block m2 reaches the ground the block m1 attains maximum height and the total mechanical energy at this point is given as;

\(m_1g(h_1 + h_2) + K.E_1 = \frac{1}{2}m_2v_{max}^2 + P.E_2\\\\m_1g(h_1 + h_2 ) -PE_2 = \frac{1}{2}m_2v_{max}^2 - K.E_1\\\\m_1g(h_1 + h_2 ) - 0= \frac{1}{2}m_2v_{max}^2 - 0\\\\m_1g(h_1 + h_2 ) = \frac{1}{2}m_2v_{max}^2\\\\W = \frac{1}{2}m_2v_{max}^2\)

Thus, we can conclude the following before the block m2 reaches the ground;

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Answer:

I think its C or A

Explanation:

4. A scientific theory is an explanation that tells how and why certain things happen. A scientific theory is a carefully thought out explanation that is based on scientific experiments.  It is an amalgamation of facts and hypotheses.

The theories are the most probable explanation of certain events and thus, can be changed and modified based on the evidences collected via observations and scientific experiments.

Both the options a and c are correct. Hence, the correct answer is option d.

5. The units are said to be derived units when they are derived from the seven fundamental units. Among the given options, meter (m), candela (cd), and hertz are the SI units of height, luminous intensity, and frequency while Coulomb (C) is a derived unit of charge.

The correct answer is option b.

6. Conversion factor can be defined as the number which are utilized to change the one set units into another. 1 meter = 100 cm

1 km = 1000m

1 Tbyte = 1Khz

The correct answer is option d.

7. The given arithmetic operation can be solved as follows:

6.201 + 7.4 + 0.68 + 12.0 = 26.281 cm

The correct answer is option a.

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Answer:

kinetic or mechanical cant remember

Explanation:

Answer:

Hey!!

Kinetic Energy is your answer!

Explanation:

I hope this helped you!

Answer:

17.27 Hz

Explanation:

Applying

v = λf................ Equation 1

Where v = speed of the car, λ = Distance between successive crevice, f = number of crevice moved in 1 seconds(Frequency of the vibration)

make f the subject of the equation

f = v/λ............. Equation 2

From the question,

Given: v = 38 m/s, λ = 2.2 m

Substitute these values into equation 2

f = 38/2.2

f = 17.27 Hz

To find the roots of the function f(x) = e^t using Newton's Method, starting from x0 = 5, we need to determine the number of iterations required to reach a tolerance of 10^(-18).

Newton's Method is an iterative numerical method used to approximate the roots of a function. In this case, we are trying to find the root of the function f(x) = e^t.

To apply Newton's Method, we start with an initial guess x0 and update the guess using the formula: x1 = x0 - f(x0)/f'(x0), where f'(x) is the derivative of f(x).

Since f(x) = e^t, the derivative f'(x) is also e^t.

To reach a tolerance of 10^(-18), we check the condition |f(x)| < tol. In this case, the tolerance tol is 10^(-18).

The number of iterations required to reach the desired tolerance cannot be determined without knowing the specific values of x0 and t. Therefore, none of the provided answer options (41, 40, cannot be determined, 180, 140, none, 47, 174) can be chosen as the correct answer without additional information.

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The angular acceleration of the rod at the instant it makes an angle of 70◦ with the horizontal is 0.929 rad/s²

To find the angular acceleration of the rod at the instant it makes an angle of 70◦ with the horizontal, we can use the equation τ=Iα, where τ is the net torque, I is the moment of inertia, and α is the angular acceleration.

First, we need to find the torque.

Since the pin is frictionless, the only torque acting on the rod is due to gravity, which creates a clockwise torque.

The torque can be calculated as τ=mg(6sin70◦), where m is the mass of the rod and g is the acceleration due to gravity.

Next, we need to find the moment of inertia. Using the given formula, I=(1/12) * (0.7 kg) * (6 m)²

Finally, we can plug in the values and solve for α.

α=τ/I=(mg(6sin70◦))/(1/12 * 0.7 kg * 6 m²)= 0.929 rad/s².

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Among the given statements, the correct one is that dark matter is inferred to exist because "we can observe its gravitational influence on visible matter."

Dark matter is a hypothetical form of matter that is thought to make up about 27% of the universe's mass-energy content.

It is inferred to exist not because of dark patches in the sky, but because of the gravitational effects it has on visible matter, such as stars and galaxies.

This gravitational influence can be observed through phenomena like the motion of galaxies within clusters and the bending of light from distant galaxies due to gravitational lensing. While dark energy, not dark matter, is responsible for the accelerating expansion of the universe, both dark matter and dark energy contribute to our understanding of the universe's overall composition and behavior.
Dark matter is believed to exist primarily because of its observable gravitational effects on visible matter, which helps explain the motion of galaxies and other cosmic phenomena.

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Class 2 cables shall have a minimum voltage rating of 300 volts.

What is the voltage ?

The voltage is a measure of the difference in electric potential between two points in a circuit. It is measured in volts and is one of the basic parameters of electrical engineering. Voltage can be generated in a variety of ways, including through #SPJ1generators, batteries, and power supplies. When two points with different potentials are connected, current can flow from the higher potential point to the lower potential point. Voltage is also used to measure the potential difference between two points in a circuit, as well as to calculate the power in the circuit. In addition, voltage is used to control the flow of current in a circuit, by either increasing or decreasing the potential difference between the two points.

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The bird has the most potential energy when it is at the highest point of its dive into the ocean.

1. Potential energy is the energy possessed by an object due to its position or state.

2. In this case, we are considering the potential energy of a bird diving into the ocean.

3. The potential energy of an object depends on its height and mass.

4. When the bird is at the highest point of its dive, it has the maximum potential energy.

5. As the bird dives deeper into the ocean, its height decreases, resulting in a decrease in potential energy.

6. At the moment the bird reaches the surface of the water, its potential energy is at its minimum, as it is at its lowest height.

7. The potential energy is converted into kinetic energy as the bird accelerates towards the water.

8. Kinetic energy is the energy possessed by an object due to its motion.

9. When the bird enters the water, its potential energy is completely converted into kinetic energy.

10. The bird continues to possess kinetic energy as it moves through the water.

11. Once the bird comes to a stop in the water, its kinetic energy is reduced to zero.

12. At this point, the bird's potential energy is also zero, as it is at its lowest height and not in motion.

13. Therefore, the bird has the most potential energy when it is at the highest point of its dive into the ocean.

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To solve this problem, you can use the equations of motion for rotational motion under constant acceleration:

ωf = ωi + αt --(1)

θ = ωit + 0.5αt^2 --(2)

where ωi is the initial angular velocity, ωf is the final angular velocity, α is the angular acceleration, t is the time elapsed, and θ is the angular displacement.

Using equation (1), we can find the angular acceleration of the wheel:

α = (ωf - ωi)/t

= (30.0 rad/s - 10.0 rad/s)/20.0 s

= 1.0 rad/s^2

Using equation (2), we can find the total angular displacement of the wheel during the 20.0 seconds:

θ = ωit + 0.5αt^2

= 10.0 rad/s × 20.0 s + 0.5 × 1.0 rad/s^2 × (20.0 s)^2

= 400.0 rad

To find the time at which the wheel has undergone half of this angular displacement, we can use equation (2) again:

θ/2 = ωit + 0.5αt^2

Rearranging and solving for t, we get:

t = [(-ωi) ± sqrt(ωi^2 + 2αθ)]/α

Since we are looking for a positive time, we take the positive root:

t = [(-10.0 rad/s) ± sqrt((10.0 rad/s)^2 + 2 × 1.0 rad/s^2 × 400.0 rad)]/1.0 rad/s^2

≈ 12.4 s

Therefore, the answer is B, 12.4 s.

Answer:

Graphite is a good conductor of electricity

it allows easy shift of current between the comm

Explanation:

The power train is a vehicle's consists of components that generate and transmit power to the wheels.

The collection of all the parts that propel your car forward is called the powertrain. The engine of your car generates power, which the powertrain then transfers to the wheels on the ground. The engine, transmission, driveshaft, axles, and differential are the main parts of a powertrain. A high-performance sports sedan is frequently described as having smooth steering, acceleration, and braking, as well as great body control and improved driving safety. These methods are crucial, but they are not the "end-all" of a great sports car. Its incredible performance figures, such as its ability to accelerate from zero to one hundred kilometers per hour in just seconds, come exclusively from your powertrain.

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Yes, the aluminum foil is impure and includes a variety of materials that have an impact on the percentage yield when added to the final product's overall weight.

Aluminum foil is used in a variety of settings, both domestic and commercial. It can be used to wrap food, bake cookies and cakes, and store food.

Additionally, many preserve delicate foods like meat and vegetables in aluminum foil.

Research has shown that aluminum foil is not a pure material since some of its particles can leach into food and cause major health issues.

Iron, zinc, gallium, and silicon microparticles are present in this foil. In addition, when heated, the coloring and paint on it have negative effects.

Additionally, it increases the overall weight of the finished product, which also has an impact on the yield percentage.

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The answer for (iv) is;

E.M.F of the battery refers to the chemical energy in the battery that is being converted into electrical energy for the flow of electrons to carry current in a circuit.

Answer:

The true statements are;

The median of A is the same as the median of B

The interquartile range of B is greater than the interquartile range of A

Explanation:

The given parameters are;

The set of the number of runs, A = {1, 4, 2, 2, 3, 1, 1, 2, 1}

The number of runs the pitcher allows in the tenth game = 9 runs

The set of the number of runs allowed in 10 games B = {1, 4, 2, 2, 3, 1, 1, 2, 1, 9}

Rearranging the data, we get  

A = 1, 1, 1, 1, 2, 2, 2, 3, 4

B = 1, 1, 1, 1, 2, 2, 2, 3, 4, 9

For the set A, we have;

Q₁ = 1, Q₂ = 2, Q₃ = 2

Therefore, the interquartile range of A = Q₃ - Q₁ = 2.5 - 1 = 1.5

For the set B, we have;

Q₁ = 1, Q₂ = 2, Q₃ = 2

Therefore, the interquartile range of A = Q₃ - Q₁ = 3.25 - 1 = 2.25

Therefore, the correct answers with regards to the two data are;

The median of A is the same as the median of B

The interquartile range of B is greater than the interquartile range of A

Blessed are the merciful: for they shall obtain mercy is the moral lesson learned from the sermon on the mount​

What is the Sermon on the Mount's main message?

Christians learn the following crucial lessons from this sermon: The things we own here on Earth don't matter. Good people will discover meaningful spiritual "treasures" in Heaven. God will take care of people, so they shouldn't be concerned.

In the Sermon on the Mount, what did Jesus say?

1. And, seeing the crowds, he climbed a mountain: His disciples came to him after he was set.

2. And he spoke to them, saying

3. Because the kingdom of heaven is theirs, those who are poor in spirit are blessed.

4. Happy are the bereaved because they will find comfort.

Who wrote the sermon on the Mount?

Scholars put forth a number of arguments for the claim that Matthew is the author of the Sermon on the Mount, but only using New Testament sources.

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The eyes, spinal cord, and brain are all main or key parts of the nervous system.

Explanation:

Visible light communication (VLC) is a wireless method that uses light emitted by LEDs to deliver networked, mobile, high-speed communication similar to Wi-Fi, leading to the term Li-Fi. It can be used as standalone solution or in a supplementary role to radio-frequency (RF) or cellular network communication.

Answer:

c

Explanation:

trust

Answer: I thinks it‘s the feathers

Explanation:

Bc feathers are warm and the hollow bones are to make the bird lighter so it can fly, the chest muscles don’t make heat, and the air sacs are probably for storing air

Answer:

search up the kinetic energy and potential energy etc. then take them and look at the characteristica are they the same? What makes them similar? Why are they different ? How? Then add the chemical nuclear and electrical changes it creates. Now the rest! There you’ve got this! If you need support I’m here! Hope this helped!

Explanation:

Answer:

At 23.5 deg north of the equator this person would see the sun directly overhead at the summer solstice at noon

As stronger winds cause waves to grow larger, the amount of energy lost to friction increases as the wind moves over the ocean

Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such as the traction required to walk without slipping, might be advantageous, they also provide a significant amount of resistance to motion.

Friction is defined as the resistance that results when surfaces rub together or the tension or disquiet that is caused when two persons of different opinions or ideas come together. When Republicans and Democrats meet to talk politics, it can cause conflict.

The imperfections on the two surfaces in contact are what produce friction. Even the smoothest surfaces include tiny abnormalities, and when two surfaces interact with one another, these irregularities cause friction. The friction increases as the imperfections get bigger.

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The equation used to relate the heat absorbed by a substance to its specific heat, mass, and change in temperature is Q = mcΔT.

This equation is known as the heat equation or the heat transfer equation. It is based on the principle of conservation of energy, which states that energy cannot be created or destroyed, only transferred from one form to another. In this case, the energy is transferred in the form of heat.

The specific heat of a substance is the amount of heat required to raise the temperature of one unit of mass of the substance by one degree Celsius or Kelvin. The heat equation allows us to calculate the amount of heat absorbed by a substance when its mass, specific heat, and change in temperature are known.

This equation is commonly used in physics, chemistry, and engineering to calculate the amount of heat transferred in various processes.

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There are several models that outlines the scientific method, which is

based on formulating an hypothesis to answer observed phenomena, and

testing the hypothesis to see if it is correct

The correct option for the explanation for the step between experimenting and conclusion is option D

(D) The need to evaluate the meaning of the experiment's results before

drawing a conclusion

The steps in the scientific method are designed to help solve existing

problems and they include;

The step that comes between experimenting and conclusion is the

analysis of the experimental result to extract the information from the raw

experimental data, so as to evaluate the hypothesis and also the

procedure of the experiment. After the analysis, conclusion is drawn and

reported followed a new hypothesis is formulated or the existing

hypothesis is expanded upon, Therefore, the correct option is option D.

The need to evaluate the meaning of the experiment's results before

drawing a conclusion

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