WILL MARK BRAINLIEST 5) A car slams on its breaks and comes to a complete stop over a
distance of 100m. If the car's rate of acceleration was -3.7 m/s², what
is the car's initial speed?

The capacity of the electricity-generating plant in watts can be calculated by converting the capacity in megawatts (MW) to watts (W). The capacity of the electricity-generating plant in watts is 7.94 × 10^8 W. To do this, we can use the conversion factor 1 MW = 10^6 W.

Using this conversion factor, we can calculate the capacity in watts as follows:
Capacity in watts = Capacity in MW × 10^6 W/MW
Plugging in the given capacity of 794 MW, we get:
Capacity in watts = 794 MW × 10^6 W/MW
Simplifying, we get:
Capacity in watts = 794 × 10^6 W
To write this answer in scientific notation, we can move the decimal point 6 places to the left and multiply by 10^6:
Capacity in watts = 7.94 × 10^8 W

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Answer:

B

Explanation:

When rubbing two sticks together it causes friction witch at fast enough friction rate produces heat energy

The work done on the ball can be calculated using work-energy theorem, the work done on an object is equal to the change in its kinetic energy.

In this case, the ball's kinetic energy (KE) is changed from 20 J to 35 J. To find the work done, simply subtract the initial KE from the final KE:
Work Done = Final KE - Initial KE
Work Done = 35 J - 20 J
Work Done = 15 J
So, 15 joules of work is done on the ball to change its kinetic energy from 20 J to 35 J.

The energy that a body has because it is in motion is known as kinetic energy. Particles in solids are packed very firmly and closely together. Inside the solid, they are not at liberty to move. Only when energy is given to them, such as when the solid is heated, can they oscillate around their mean position. Particles' kinetic energy is caused by their velocity. Even if the particles move, their velocity will be very, very modest if they don't move at all. Therefore, there will be very little kinetic energy.

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Planet A exerts a force on planet B, the magnitude and direction of the gravitational force planet B exerts on planet A the gravitational force exerted by planet B on planet A is the same as the magnitude of the gravitational force exerted by planet A on planet B

Newton's third law states that if object A exerts a force on object B, then object B exerts an equal and opposite force on object A. Hence, if planet A exerts a gravitational force on planet B, then planet B exerts an equal and opposite gravitational force on planet A.The magnitude of the gravitational force exerted by planet B on planet A is the same as the magnitude of the gravitational force exerted by planet A on planet B, this is according to the law of universal gravitation,

This law states that the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. The direction of the gravitational force exerted by planet B on planet A is towards planet B's center, just as the direction of the gravitational force exerted by planet A on planet B is towards planet A's center. Therefore, we can say that the magnitude and direction of the gravitational force planet B exerts on planet A is equal and opposite to the gravitational force planet A exerts on planet B

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Systems that experience simple harmonic motion with a significant damping effect are those with high friction, viscous fluid resistance, built-in dampers, or high resistance electrical components.

In simple harmonic motion (SHM), damping refers to the gradual reduction of oscillation amplitude due to the dissipation of energy as heat, friction, or other forms of resistance. A significant damping effect occurs when the system loses a considerable amount of its oscillation amplitude over time. Among various systems that can experience SHM with a significant damping effect are:

1. A mass-spring system with a high friction coefficient: In this system, a mass is attached to a spring and oscillates back and forth. The friction between the mass and the surface it moves on creates a damping effect, reducing the amplitude of the oscillations over time.

2. A pendulum in a viscous fluid: When a pendulum swings in a viscous fluid such as oil, the fluid resistance acts as a damping force, gradually diminishing the amplitude of the pendulum's oscillations.

3. A vibrating mechanical system with dampers: In some mechanical systems, like a car suspension or a building's structural supports, dampers are incorporated to reduce vibrations. These dampers convert the kinetic energy of the vibrating system into heat or other forms of energy, leading to a significant damping effect.

4. An oscillating electrical circuit with a high resistance component: In an electrical circuit containing inductive and capacitive components, oscillations can occur due to the exchange of energy between the magnetic and electric fields. The presence of a high resistance component in the circuit results in significant damping, as energy is dissipated as heat.

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Complete Question:

19. which of the following systems will experience simple harmonic motion with a significant damping effect?

The symbols that completes the given nuclear equation are written as follows:

An alpha decay can be defined as a type of radioactive decay in which the atomic nucleus of a radioactive element emits an alpha particle, thereby, producing chemical elements with a different atomic nucleus.

During an alpha decay, the radioactive element has a mass number that is decreased by four (4) and an atomic number that is decreased by two (2), which is typically an atom of Helium (⁴He₂).

A beta particle can be defined as an isotope which typically undergoes radioactive decay through the emission of a radiation with a -1 charge. This ultimately implies that, an atom of neutron becomes a proton and an electron (₀e⁻¹) and an atom of proton also becomes a neutron and a positron (⁰⁻e₁⁺) during beta decay.

In conclusion, the symbols that completes the given nuclear equation are written as follows:

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Answer:

the answer would be 2.23

Explanation:

that is also a rounded up decimal! to find your answer, divide the mass (13.8) by the density (6.2) to find your volume :)

Answer:

Normative

Explanation:

It is normal occurance but not unnatural

Answer:A static

Explanation:

Answer:

diaetes

Explanation:

Answer:

A:  In an adiabatic process, no heat enters or leaves the system

Answer: B

Explanation: it is perpendicular to a surface

Answer:

it is perpendicular to a surface

Explanation:

Answer:

The correct option is;

C. 1 mile clear of clouds

Explanation:

Given that the indicated airspace location is at or below 700 feet AGL therefore, it is taken as being in the region of a class G airspace which covers the airspace regions from the base up to and equal to 1,200 feet beneath the class E airspace and the requirement for VFR flight for class G are 1 mile and clear of clouds.

Answer:

light potential energy is converted into electrical potential energy.

Explanation:

A solar heat absorbs the light that creates pairs of electron - holes, these free charges when moving create a current, the light energy stored in the radiation is converted into electrical energy within the n-p junctions.

In summary, light potential energy is converted into electrical potential energy.

Answer:

3, 4, 1, 2

Explanation:

Answer:

Its north pole is attracted to the south pole of the magnet

Explanation:

Opposites attract, so therefor north and south attract and south and south repel because they are the exact same as well as north and north, which is also why on a compass it is always pointing north because the north magnetic pole is much greater and is attracted to the south, its opposite, therefor the north pulls the south towards it.

Answer:

1). Average speed = 1.5 m per second

2). Average velocity = 1.5 m per second

Explanation:

1). Since, speed is a scalar quantity

   Therefore, average speed of the trip = \(\frac{\text{Total distance covered}}{\text{Total time taken}}\)

    From the graph attached,

   Total distance covered = 10 + 10 + 20 + 0 + 20 + 30

                                           = 90 meters

   Total time taken = 60 seconds

    Average speed = \(\frac{90}{60}\)

                               = 1.5 meter per second

2). Velocity is a vector quantity.

    Therefore, average velocity = \(\frac{\triangle d}{\triangle t}\)

                                                   = \(\frac{d_{60}-d_0}{60-0}\)

                                                   = \(\frac{90-0}{60-0}\)

                                                   = 1.5 meter per second                        

Answer:

See Explanation

Explanation:

m1(v1) + m2(v2)

Opposite turns the plus to subtraction.

80(8) - 120(4.0)

60 - 480 = 160 kg m/s to the right

An 80-kg football player travels to the right at 8 m/s and a 120-kg player on the opposite team travels to the left at 4.0 m/s. The total momentum is 160 kg m/s.

Momentum is a fundamental concept in physics that describes the amount of motion an object has. It is defined as the product of an object's mass and its velocity. Mathematically, momentum (p) is given by:

p = m × v

where p is the momentum, m is the object's mass, and v is its velocity.

The units of momentum are kilogram-meters per second (kg m/s) in the SI system of units. The direction of momentum is the same as the direction of the object's velocity.

Momentum is a conserved quantity, meaning that the total momentum of an isolated system (a system that does not interact with its surroundings) remains constant. This is known as the law of conservation of momentum, and it has many practical applications in physics and engineering. For example, it can be used to analyze collisions between objects, such as in sports or automobile accidents.

Here in the Question,

To find the total momentum of the two players, we first need to calculate the individual momentum of each player, and then add them up.

The momentum (p) of an object is given by the product of its mass (m) and velocity (v):

p = m × v

For the first player with a mass of 80 kg and a velocity of 8 m/s, the momentum is:

p1 = 80 kg × 8 m/s = 640 kg m/s

For the second player with a mass of 120 kg and a velocity of -4.0 m/s (negative because he is traveling in the opposite direction), the momentum is:

p2 = 120 kg × (-4.0 m/s) = -480 kg m/s

The negative sign in front of the momentum for the second player indicates that his momentum is in the opposite direction of the first player.

To find the total momentum, we add the individual momenta:

total momentum = p1 + p2

= 640 kg m/s - 480 kg m/s

= 160 kg m/s

Therefore, the total momentum of the two players is 160 kg m/s.

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​

skin cancer and it cause to lost transportating process

Answer:Joe's velocity leaving the ground is 1.00 m/s.

Explanation: The velocity of Joe immediately after leaving the ground can be calculated using the formula v = at, where a is the acceleration and t is the time. Joe's acceleration can be found using the equation F = ma, where F is the net force and m is the mass.So, Joe's acceleration can be calculated as a = F/m = 100N / 90kg = 1.11 m/s^2.Then, using v = at, we can calculate Joe's velocity as v = 1.11 m/s^2 x 0.9 s = 1.00 m/s. Therefore, Joe's velocity immediately after leaving the ground is 1.00 m/s.

Answer:

bc we play when we are bored and some people use it as a tradition to play on thanksgiving

Answer:

a) Time = 2.67 s

b) Height = 35.0 m

Explanation:

a) The time of flight can be found using the following equation:

\( x_{f} = x_{0} + v_{0_{x}}t + \frac{1}{2}at^{2} \)   (1)

Where:

\( x_{f}\): is the final position in the horizontal direction = 80 m

\( x_{0}\): is the initial position in the horizontal direction = 0

\(v_{0_{x}}\): is the initial velocity in the horizontal direction = 30 m/s

a: is the acceleration in the horizontal direction = 0 (the stone is only accelerated by gravity)

t: is the time =?  

By entering the above values into equation (1) and solving for "t", we can find the time of flight of the stone:  

\( t = \frac{x_{f}}{v_{0}} = \frac{80 m}{30 m/s} = 2.67 s \)

b) The height of the hill is given by:

\( y_{f} = y_{0} + v_{0_{y}}t - \frac{1}{2}gt^{2} \)

Where:

\( y_{f}\): is the final position in the vertical direction = 0

\( y_{0}\): is the initial position in the vertical direction =?

\(v_{0_{y}}\): is the initial velocity in the vertical direction =0 (the stone is thrown horizontally)            

g: is the acceleration due to gravity = 9.81 m/s²

Hence, the height of the hill is:

\( y_{0} = \frac{1}{2}gt^{2} = \frac{1}{2}9.81 m/s^{2}*(2.67 s)^{2} = 35.0 m \)  

I hope it helps you!

on the other planet, floating is no better or worse than it is on Earth. Since gravity is smaller on the other planet than it is on Earth, you would weigh less there because of this.  

a weight of water equal to your own weight must be displace by your body in order to float, according to the Archimedes principle.

On a specific planet, the acceleration caused by gravity is less than that of the on the planet with lower gravity than the arch, thus even if our body weight will be smaller, the weight of water displaced will also be lower. Our bodies sense an upward push in the water that is equivalent to the weight of the water that is displaced. Due to the decreased gravity, the water that has been displaced has a smaller weight, which means that the buoyant force will also be lower. Thus, it won't require us to sing. We shall appear to be the same. We'll swim along the same shore as V 2 on Earth.

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The process responsible for the development of these varieties is artificial selection, also known as selective breeding. The correct answer is D.

Broccoli, cabbages, and Brussels sprouts all share a common ancestor, the wild mustard plant, and can still interbreed due to their close genetic relationship.

Artificial selection involves the intentional breeding of plants or animals with desired traits by humans. In the case of broccoli, cabbages, and Brussels sprouts, ancient farmers selectively bred wild mustard plants over generations, favoring specific traits such as larger leaves, thicker stems, or compact bud formations. By repeatedly choosing and breeding plants with these desired traits, they gradually transformed the wild mustard into the distinct vegetables we know today.

Unlike genetic drift, which refers to random changes in the gene pool of a population, and inheritance of acquired characteristics, which has been discredited as a mechanism of evolution, artificial selection involves deliberate human intervention and selection based on desired traits.

Migration, on the other hand, involves the movement of individuals from one population to another and does not directly contribute to the development of new varieties.

Therefore, the correct option is d. artificial selection.

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Answer:

True

Explanation:

It is true that. A technician can be electrocuted when working on HEVs or EVs, therefore the correct answer is option A

An EV stands for an electric vehicle. Electric vehicles (EVs) are autos that are powered totally or partially by electricity. Electric cars are extremely cost-effective to run because they have fewer moving parts to maintain and use little to no fossil fuels (petrol or diesel).

When evaluating its environmental impact, every factor must be taken into consideration. Considering that EVs have a minimal overall environmental impact, this suggests that the severity of these production emissions decreases.

Recycling is one strategy for lowering the lifespan emissions of electric vehicles. Again, incorrect assumptions can be refuted by facts.

Thus, That is accurate. The correct response is option A because a technician could electrocute themselves while working on HEVs or EVs.

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If the distance between the spheres is reduced, the magnitude of the attractive force between them will increase according to the inverse square law.

The magnitude of the new attractive force between two conducting spheres that are separated by a distance d can be determined by using Coulomb's law. Coulomb's law states that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. However, for conducting spheres, the charges are distributed uniformly on their surfaces.

Assuming that the spheres have charges of q₁ and q₂, the magnitude of the attractive force between them can be given by the following equation:

F = (1/4πε) (q₁ q₂ / d²)

Where ε is the permittivity of the medium between the spheres.

Therefore, if the distance between the spheres is reduced, the magnitude of the attractive force between them will increase according to the inverse square law. On the other hand, if the distance between the spheres is increased, the magnitude of the attractive force will decrease.

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Answer:

Explanation:

Force on the electron due to magnetic field 's north component will be zero because both velocity of electron and direction of magnetic field are same .

Force due to downward component of magnetic field

= B q v where B is magnetic field , q is charge moving and v is velocity of charge

F = 5 .00 x 10⁻⁵ x 1.6 x 10⁻¹⁹ x 4 x 10⁷

= 32 x 10⁻¹⁷ N

acceleration = F / m where m is mass of electron

= 32 x 10⁻¹⁷ / 9.11 x 10⁻³¹

= 3.5 x 10¹⁴ m/s²

The development of our current model of the atom evolved over centuries, starting with the ancient Greeks' conceptualization of the atom as an indivisible particle.

Around the fifth century BCE, the Greeks became the first people to put forth the idea of the atom. Democritus and other philosophers proposed the idea that matter is made up of tiny, indivisible pieces called atoms, but there was no experimental support for this theory at the time. Although it survived for centuries, this idea did not significantly change until the 19th century.

Scientific developments in the 19th century led to a deeper comprehension of atoms. With notable contributions from Michael Faraday's work on electromagnetic induction and Benjamin Franklin's electricity tests, scientists discovered the presence of electrical charges.

Groundbreaking investigations that transformed our understanding of the atom took place in the early 20th century. The electron, a negatively charged particle inside the atom, was discovered in 1897 as a result of J.J. Thomson's cathode ray tube studies. Atoms are shown to have a small, dense, positively charged nucleus that is around by negatively charged electrons in a large empty region by Ernest Rutherford's gold foil experiment in 1911.

The Rutherford model, sometimes known as the planetary model, was created in response to the discovery of the nucleus. This model, however, encountered problems since it was unable to explain the stability of atoms and the behavior of electrons. Researchers like Werner Heisenberg and Erwin Schrödinger made significant contributions to the development of quantum mechanics in the 1920s and 1930s.

The wave-particle duality and quantum mechanical concepts are both included in the current model of the atom, also referred to as the quantum mechanical model. In orbitals, which are areas of probability where electrons are most likely to be located, it says that electrons exist. Around the nucleus, these orbitals are arranged into energy levels or shells. The behavior of subatomic particles like protons and neutrons, which make up the nucleus, is also taken into consideration by the model.

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The angular velocity of center O is ω = vC / OC where vC = 1.5 m/s and OC is the distance from point C to the IC.

To determine the angular velocity of the center of a gear rack, we can use the instantaneous center of zero velocity (IC) method. The IC is the point on the gear that has zero velocity at a given instant in time. For a gear rack, the IC is located at the point where the gear contacts the rack.

If we know the linear velocities of two points on the gear (or gear rack), we can use the IC method to determine its angular velocity. In this case, we know that cable AB is unwound with a speed of 3 m/s and that gear rack C has a speed of 1.5 m/s.

To determine the angular velocity of center O, we can follow these steps:

Draw a line perpendicular to cable AB at point B.

Draw a line perpendicular to gear rack C at point C.

The intersection of these two lines is the IC.

Draw a line from the IC to center O.

The angular velocity of center O is equal to the linear velocity of point C divided by the distance from point C to the IC.

Using this method, we can determine that the angular velocity of center O is:

ω = vC / OC

where vC = 1.5 m/s and OC is the distance from point C to the IC.

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The isotopes of any element have same number of protons inside them.

Cadmium is a chemical element with the symbol Cd and atomic number 48. It is soft, silvery and white metal.

Given is about Cadmium that it has eight naturally occurring isotopes.

Isotopes are the atoms of the same element which have same number of protons in them but the number of neutrons are different. Isotopes usually have same chemical properties, but they have different physical properties. Their can be stable and unstable isotopes. These unstable isotopes are also called radioisotopes, since they emit radiation. Thus, the isotopes have same number of protons.

Therefore, the isotopes of any element have same number of protons inside them.

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