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An object has a mass of 3.8 kg and a force of 11.6 N is applied to it. What is the acceleration that results?

Answer:

See below

Explanation:

12 125 lbs  *  .4536 kg/lb = 5499.9 kg      =   5 .4999 x 10 ^3 kg

The quantization of energy levels and the restrictions on electron transitions in quantum mechanics ensure the stability of atoms. Electrons occupy specific energy levels and are confined to certain orbits around the nucleus, maintaining a balance between the attractive force of the nucleus and the centrifugal force of their motion.

In classical mechanics, atoms are described as miniature solar systems with electrons orbiting around the nucleus.

According to classical electromagnetic theory, an accelerated charged particle emits electromagnetic radiation.

Therefore, in the classical view, orbiting electrons would continuously lose energy and eventually spiral into the nucleus, causing atoms to collapse.

Quantum mechanics, on the other hand, provides a different perspective on the stability of atoms.

It introduces the concept of wave-particle duality, where particles like electrons can exhibit both particle-like and wave-like behavior.

In quantum mechanics, electrons are described by wave functions, which represent the probability distribution of finding the electron in different regions around the nucleus.

The key idea in quantum mechanics is that electrons can only occupy specific energy levels, or quantized states, within the atom. These energy levels are distinct and separated by energy gaps.

Electrons can transition between these energy levels by absorbing or emitting discrete amounts of energy, corresponding to the emission or absorption of photons.

The stability of atoms in quantum mechanics arises from the concept of the ground state.

The ground state is the lowest energy level that an electron can occupy, and it represents the most stable configuration for the atom. In this state, the electron does not emit any radiation and does not spiral into the nucleus.

The quantization of energy levels and the restrictions on electron transitions in quantum mechanics ensure the stability of atoms.

Electrons occupy specific energy levels and are confined to certain orbits around the nucleus, maintaining a balance between the attractive force of the nucleus and the centrifugal force of their motion.

Overall, quantum mechanics resolves the classical problem of instability in atoms by introducing the concept of quantized energy levels, which govern the behavior of electrons and prevent their collapse into the nucleus.

This understanding of atomic stability forms the basis for our modern understanding of the structure of matter and the functioning of atoms in chemical reactions.

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Answer:

fossil fuels are natural and limited, nuclear is man made and more toxic

Explanation:

Answer:

C. infrared waves

Explanation:

Microwaves are the electromagnetic waves which would the best to use in an object designed to cook food. Thus, the correct option is D.

Microwave is a form of electromagnetic radiation with the wavelengths ranging from about one meter to about one millimeter which is corresponding to the frequencies in the range between 300 MHz and 300 GHz, respectively.

Microwaves are used for cooking food faster than the conventional ovens and would not make a mess in the process. This reheats food instantly quickly. It is helpful for the health conscious people. Microwaves also ensure that a person will never burn the food again. Microwaves are also very economical and energy efficient.

Therefore, the correct option is D.

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The charge on a sphere can be determined by using the formula Q = 4πε₀r²E, where Q is the charge, ε₀ is the permittivity of free space, r is the radius of the sphere, and E is the electric field at the surface of the sphere.

To find the charge on a sphere, you will need to know the radius of the sphere and the electric field at the surface of the sphere. Once you have these values, you can plug them into the formula and solve for the charge.

Here is a step-by-step explanation of how to find the charge on a sphere:

1. Find the radius of the sphere. This will be given to you or you will need to measure it.
2. Find the electric field at the surface of the sphere. This will also be given to you or you will need to measure it.
3. Plug the values for the radius and electric field into the formula Q = 4πε₀r²E.
4. Solve for the charge, Q.

So, the charge on a sphere is determined by the radius of the sphere and the electric field at the surface of the sphere. By using the formula Q = 4πε₀r²E, you can find the charge on a sphere.

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Answer:

There is no essential difference between microwaves and blue light other than a difference in frequency and wavelength.

Explanation:

The statement that is true with respect to Faraday's law of induction is option C - the voltage induced depends on how quickly the area and magnetic field change.

Faraday's law states that the voltage induced in a coil is proportional to the rate of change of magnetic flux through the coil. Magnetic flux is the product of the magnetic field strength and the area of the loop within which the magnetic field is penetrating.

Therefore, a change in either the magnetic field strength or the area of the loop will result in a change in magnetic flux, which in turn will induce a voltage in the coil. The faster the change in magnetic flux, the greater the induced voltage will be.

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Answer:

q = 0.384 C

Explanation:

The total charge present at the head can be easily found out by multiplying the charge on a single electron with the total number of electrons present on the head:

\(q = ne\)

where,

q = total charge on head = ?

n = total no. of electrons on the head = 2.4 x 10¹⁸

e = charge on 1 electron = 1.6 x 10⁻¹⁹ C

Therefore,

\(q = (2.4\ x\ 10^{18})(1.6\ x\ 10^{-19}\ C)\)

q = 0.384 C

Answer:

Given: V = 220V, Pmin = 360W, Pmax = 840W

For minimum heating case:

We know that

Pmin = VI

360 = 220 X I

I = 1.63 amp

R = V/I

R = 220/1.63

R = 134.96ohms

For maximum heating case:

We know that

Pmax = VI

840 = 220 X I

I = 3.81 amp

R = V/I

R = 220/3.81

R = 57.74 ohms

Answer:

The different layers of carbon atoms present in graphite are bounded by weak van der Waals forces. ... The cleaning between the layers is done by graphite, thus, it is so slippery and soft. This is the reason why graphite is used in pencil and as lubricants in machines which operate at high temperature.

grahite is used in pencils because its so oily and it also forms quickly so it best sometimes

The work  was done to move the block  across the floor  is 400 Joule.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

A spring balance can be used to calculate the Force. The Newton is the SI unit of force.

Force applied on the block: F = 40 N.

Displacement of the box = 10 m.

Hence, work  done to move the block = Force × Displacement

= 40 × 10 joule

= 400 joule.

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Answer:

The heat necessary to warm 500g of water from 20°C to 65°C is 37,620 J.

Explanation:

GIVEN: m = 500 gm, T₂ = 65°C AND T₁  = 20°C, we know that c (specific heat capacity) = 4180

TO FIND: The heat necessary to warm 500g of water from 20°C to 65°C.

SOLUTION:

By using the heat equation,

              Q=m c ΔT  

             ΔT = T₂ - T1

             ΔT = 65 - 20 = 45°C

In this case,

Q = 0.2 × 4180 × 45 = 37,620 J

The potential value at point A is -37.2 V

To find the potential value at point A, we can use the formula for potential energy:

Potential Energy (PE) = Charge (q) * Potential (V)

We are given that the charge is -4.46 C and the potential energy is 166 J. Plugging these values into the formula, we get:

166 J = -4.46 C * Potential (V)

To solve for the potential value at point A, we can rearrange the equation:

Potential (V) = Potential Energy (PE) / Charge (q)

Substituting the given values, we have:

Potential (V) = 166 J / -4.46 C

Calculating this, we find:

Potential (V) = -37.2 V

Therefore, the potential value at point A is -37.2 V.

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Answer: The answer is A

Explanation: I took that test already

Compounds 1 and 3 are ionic. Because Ionic compounds are composed of oppositely charged ions that are attracted to one another, they require more energy to melt than covalent bonds. Hence, option A is correct.

Melting point of a substance is the temperature at which it converts from solid to liquid state. Melting point depends on the bond strength, molecular mass, temperature and pressure.

As the bond strength increases, the more energy have to be applied to weaken the intermolecular forces in solid to convert to liquid form. Ionic bonds are the strongest bond type. Thus, ionic compounds have highest melting point.

Therefore, the compounds 1 and 3 having highest melting point are ionic compounds. Remaining two with lower melting point are covalent. Therefore, option A is correct.

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The energy that an object has due to its location in a gravitational field is known as gravitational potential energy. GPE = mgh is the formula for gravitational potential energy. GPE = 1200(1.6)(350) = 672000 J

If an object is located at a height that is higher (or lower) than the zero height, it has gravitational potential energy. If an object is situated on an elastic media in a position other than the equilibrium position, it has elastic potential energy.

By utilizing a pump, crane, or engine to raise a mass to a specific height, gravity batteries can store gravitational potential energy. Depending on the mass of the object and also how high it was lifted, the mass now retains a specific gravitational potential energy after being raised.

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Answer:

136 N

Explanation:

Weight can be calculated by multiplying mass and acceleration due to gravity. The equation is formed as \(\displaystyle{W=mg}\).

We know that her weight is 800 N on Earth and that acceleration due to gravity on Earth is given in the chart as 9.81 m/s². We will be finding her mass so we can find her weight on the moon.

\(\displaystyle{800 = m\cdot 9.81 }\\\\\displaystyle{m=81.55}\)

Therefore, her mass is approximately 81.55, now we find her weight on the moon.

\(\displaystyle{W=81.55\cdot 1.67}\\\\\displaystyle{W\approx 136 N}\)

Therefore, her weight on the moon is close to 136 N.

The speed of the second bowling ball after collision is 1.55 m/s

Speed can be defined as the ratio of distance to time of a body.

To calculate the speed of the second bowling ball after collision, we use the formula below

Formula:

v = mu/m'................ Equation 1

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the second bowling ball is 1.55 m/s fast.

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Answer:

Explanation:

The Earth pulls the bicycle downward through the force of gravity, and, in response, the bicycle pulls up on the Earth with a force of equal magnitude. Gravity "pushes" the Earth into the road, which pushes up with an opposite force, canceling gravity. Thus, action reaction forces do not cancel each other.

Answer:

The awnser for "Electricity that flows in a closed path is called a" circuit.

Drivers must take precautions to avoid hydroplaning, such as slowing down when driving on wet roads, maintaining adequate tire pressure, and ensuring that their vehicle's tires have sufficient tread depth.

Traction is a crucial aspect of driving, especially when operating a vehicle at high speeds, such as over 40-45 miles per hour. When tires can't channel or scatter water away, hydroplaning takes place. Hydroplaning occurs when a vehicle's tires move so quickly or encounter more water than they can channel away. You are essentially riding on a layer of water at this point, with zero traction. As a result, you have a total loss of directional, acceleration, and braking control. If you try to brake or steer when hydroplaning, imagine your vehicle traveling at high speed on a layer of ice or water, and you can picture what will happen. Hydroplaning may happen in wet weather conditions, particularly if the tires on a vehicle have insufficient tread depth to divert water from the road's surface. Hydroplaning can be extremely dangerous, as drivers may lose control of their vehicle and cause an accident, resulting in serious injury or death.

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Answer:

Use v = u + at but since u is equal to zero then it becomes v = at. The final velocity of the body is equal to 12 m/s. The acceleration of an object decreases ...

Explanation:

Answer:

it goes up until we help it to but the moment we stop support it gets affected by gravity and goes back

Explanation:

The dark fringes on either side of the central bright fringe in single-slit diffraction are caused by destructive interference. When light passes through a narrow slit, it diffracts, or spreads out, into a pattern of bright and dark fringes.

When waves of light pass through a narrow slit, they spread out in all directions, forming a pattern of bright and dark fringes. The pattern is a result of interference between the waves of light. When two waves meet, they can either add together (constructive interference) or cancel each other out (destructive interference), depending on the phase of the waves.


This interference pattern consists of a central bright fringe (maximum) surrounded by alternating dark (minimum) and bright fringes. The dark fringes occur when light waves from the slit destructively interfere with each other. This means that the crest of one wave coincides with the trough of another wave, resulting in their amplitudes cancelling each other out and creating a dark fringe. This pattern continues on either side of the central bright fringe, with the dark fringes becoming progressively less distinct as they move further from the center.

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There are two forces acting on the proton, the electrostatic force and the weight; we also know that the forces are balanced which means that they have to be equal, then we have:

Now, we know that the electrostatic force is related to the electric field by:

and that the weight is given by:

Plugging these in the first equation we have:

The mass and charge of the proton are:

plugging the values in the expression for the field we have:

Therefore, the magnitude of the field is:

Since a proton has a positive charge it will move in the direction of the field; in this case we need the force to be pointing up since the weight points down.

Therefore, the direction of the field is up.

Solving for d using the calculated values for t, we find that the distance from spacecraft at which spacecraft should turn on its rockets is approximately 8670.7 meters.

To determine the distance from spacecraft at which spacecraft should turn on its rockets, we need to consider the motion of each spacecraft as it slows down.

Let's call the time elapsed from the moment spacecraft turns on its rockets until it comes to a complete stop t1. The initial velocity of spacecraft is 154.5 m/s and it slows down at a rate of 17.1 m/s^2, so its velocity after time t1 is given by:

v1 = 154.5 m/s - 17.1 m/s^2 * t1

The distance traveled by spacecraft during this time can be calculated as:

d1 = 154.5 m/s * t1 - (1/2) * 17.1 m/s^2 * t1^2

Next, let's call the time elapsed from the moment spacecraft turns on its rockets until it comes to a complete stop t2. The initial velocity of spacecraft is 133.0 m/s and it slows down at a rate of 22.2 m/s^2, so its velocity after time t2 is given by:

v2 = 133.0 m/s - 22.2 m/s^2 * t2

The distance traveled by spacecraft during this time can be calculated as:

d2 = 133.0 m/s * t2 - (1/2) * 22.2 m/s^2 * t2^2

Since the two spacecraft are moving towards each other, their relative velocity is the sum of their initial velocities:

v_rel = 154.5 m/s + 133.0 m/s = 287.5 m/s

The time elapsed until they meet, have zero relative velocity, and arrive at the same time, t, can be calculated as:

t = v_rel / (17.1 m/s^2 + 22.2 m/s^2)

The distance traveled by each spacecraft during this time can be calculated using the equations for velocity and distance given above. The total distance between the two spacecraft when they meet is the sum of these distances, so the distance from spacecraft at which spacecraft should turn on its rockets is given by:

d = d1 + d2 = (154.5 m/s * t - (1/2) * 17.1 m/s^2 * t^2) + (133.0 m/s * t - (1/2) * 22.2 m/s^2 * t^2)

Solving for d using the calculated values for t, we find that the distance from spacecraft at which spacecraft should turn on its rockets is approximately 8670.7 meters.

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Answer:

C. Equal to 0

Explanation:

voltage is only produced when the magnet is in motion. Hope this helps :)

The vertical forces cancel, so only the horizontal forces are included in the net force. If the right is positive and the left is negative, then

50 N + (-20 N) = 30 N

so the net force is (B) 30 N to the right.

Answer:

(B) 30 N to the right.

Explanation:

If a machine allows us to apply less force to do work, the cost is that we must apply the force over a greater distance.

The above is so because, according to the principle of work and energy, the amount of work done remains constant, but the force and distance can be traded off. In other words, if we decrease the force required to do a certain amount of work, we must increase the distance over which the force is applied in order to compensate.

Therefore, For example, consider a simple lever. By using a lever, we can apply less force to lift a heavy object, but we must move the lever over a greater distance in order to do so. The work done, which is the product of the force and the distance, remains constant. In this case, the force is reduced, but the distance over which it is applied is increased.

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Answer:

561

Explanation: it would most definitely go down as a number because it isn't the same