Which of the following is not a physical property ? A . The ability of a substance to dissolve in water. B . The ability of a substance to react with oxygen C . The ability of a substance to change directly into gas? D . The ability of a substance to melt at a specific temperature .

Answer:

Magnetic field

Explanation:

Answer:

magnetic field

Explanation:

Answer:This one show the earths positoning

Explanation:

Answer:

This is the correct answer

Explanation:

It is attached below

Answer:

Most of UV radiation is stopped by glass & this is why you will not get sunburns behind a glass. The glass simply filters out the UV radiation that is responsible for the sunburns & protect your skins from these energetic & somewhat harmful radiation

Explanation:

(b) There are 9 different possible combinations of quantum numbers for the two 2p electrons in carbon.

(c) There is only 1 different set of quantum numbers possible for the two electrons in carbon, taking into account the Pauli principle.

(b) The quantum numbers that describe an electron in an atom are the principal quantum number (n), azimuthal quantum number (l), magnetic quantum number (ml), and spin quantum number (ms). Ignoring the Pauli principle, each of the two 2p electrons in carbon can have its own set of quantum numbers.

For the 2p sublevel, the azimuthal quantum number (l) can have a value of 1, and the magnetic quantum number (ml) can have values of -1, 0, and 1. The principal quantum number (n) will be the same for both electrons since they are in the same sublevel.

Therefore, for each electron, there are 3 possible combinations of quantum numbers: (n, l, ml). For the two electrons, we can multiply these possibilities together: 3 * 3 = 9.

Thus, ignoring the Pauli principle, there are 9 different possible combinations of quantum numbers for the two 2p electrons in carbon.

(c) The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers. This means that for the two electrons in carbon, each combination of quantum numbers can only be used once.

Since there are 9 different possible combinations of quantum numbers obtained in part (b), applying the Pauli principle eliminates 9 - 1 = 8 of these combinations. This is because one combination will be the same as the other when the order of the electrons is switched.

Therefore, after applying the Pauli principle, only 1 out of the 9 possible combinations remains.

In summary, there is only 1 different set of quantum numbers possible for the two electrons in carbon, taking into account the Pauli principle.

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1. Astronomical observational patterns are used to determine the history of the universe by studying the light emitted or absorbed by celestial objects. Scientists analyze the patterns in the electromagnetic spectrum, such as the distribution of wavelengths, intensity, and spectral lines, to gather information about the composition, temperature, motion, and evolution of celestial bodies.

Astronomical observational refers to the act of observing celestial objects and phenomena in the field of astronomy. It involves the use of telescopes, detectors, and other instruments to collect data and study various aspects of the universe.

2. Mount Wilson and Mount Palomar Observatories were used to observe and collect data about space due to several reasons. Firstly, the locations of these observatories provide advantages for astronomical observations.

3. The NASA Mission Statement is: "To pioneer the future in space exploration, scientific discovery, and aeronautics research." This mission statement reflects NASA's commitment to advancing human knowledge, technological innovation, and exploration beyond Earth's boundaries. NASA aims to push the boundaries of scientific understanding, develop and test new technologies, explore the cosmos, and inspire the next generation of scientists and engineers.

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Answer:

20.96 m/s

Explanation:

Apply the kinematic equation:

Vf=Vi+at

Vi=8m/s

a=1.8m/s^2

t=7.2s

Putting this all in should give you your answer of 12.96m/s

Answer:

opt B is correct

Explanation:

The chemical equilibrium concentration of a strong acid may be equal to it's corresponding conjugate base.

Chemical equilibrium is defined as the condition which arises during the course of a reversible chemical reaction with no net change in amount of reactants and products.A reversible chemical reaction is the one wherein the products as soon as they are formed react together to produce back the reactants.

At equilibrium, the two opposing reactions which take place take place at equal rates and there is no net change in amount of the substances which are involved in the chemical reaction.At equilibrium, the reaction is considered to be complete . Conditions which are required for equilibrium are given by quantitative formulation.

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Answer:

Zero, the support force and gravitational force together equal a zero net force

Explanation:

The fugitive will catch up to the empty box car in approximately 4.9 seconds, and he will have traveled a distance of about 14 meters to reach the box car.

To solve this problem, we can first determine the time it takes for the fugitive to reach his maximum speed of 6.0 m/s using the formula v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. Rearranging the formula, we have t = (v - u) / a.

Substituting the given values, we get t = (6.0 m/s - 0) / 1.5 m/s² = 4.0 seconds. This is the time it takes for the fugitive to reach his maximum speed.

Now, let's calculate the distance traveled during this time. We can use the equation s = ut + (1/2)at², where s is the distance, u is the initial velocity, t is the time, and a is the acceleration. Since the fugitive starts from rest (u = 0), the equation simplifies to s = (1/2)at².

Substituting the values, we get s = (1/2)(1.5 m/s²)(4.0 s)² = 12 meters. Therefore, the distance traveled by the fugitive to reach his maximum speed is 12 meters.

Now, the fugitive is traveling at a constant speed of 6.0 m/s and trying to catch up to the empty box car, which is moving at a constant speed of 5.4 m/s. The relative velocity between them is 6.0 m/s - 5.4 m/s = 0.6 m/s.

To calculate the time it takes for the fugitive to catch up to the box car, we divide the distance traveled by the relative velocity: t = 12 meters / 0.6 m/s = 20 seconds.

Therefore, the fugitive will catch up to the empty box car in approximately 20 seconds. However, since the fugitive has already traveled for 4 seconds (the time to reach his maximum speed), we subtract that from the total time: 20 s - 4 s = 16 seconds.

Finally, to calculate the distance traveled by the fugitive to reach the box car, we multiply the time by the constant speed: s = 16 seconds * 6.0 m/s = 96 meters.

Therefore, it takes the fugitive approximately 16 seconds to catch up to the empty box car, and he travels a distance of about 96 meters to reach it.

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Answer: 405  and -315

Explanation: The coterminal angle of 45 is 405 and -315. Here 405 is the positive coterminal angle, and -315 is the negative coterminal angle.

The time taken by the shot to reach the height of Sam's head is 0.196 s.

The initial velocity of the shot u = 0 m/s.

Acceleration, a = 36.0 m/s²

Displacement, s = 68 cm = 0.68 m

We can use the formula v² = u² + 2as, where v is the final velocity of the shot.

v² = u² + 2asv² = 0 + 2(36.0 m/s²)(0.68 m)

           = 49.536 m²/s²v = √(49.536 m²/s²) = 7.04 m/s

Therefore, the speed of the shot when Sam releases it is 7.04 m/s. (DETAIL ANS)

B) Let h be the maximum height the shot reaches above the ground.

Using the equation v² = u² + 2as, we can find the maximum height, h.

v² = u² + 2ash = (v² - u²) / (2a)h = (7.04 m/s)² / (2 × 36.0 m/s²) = 0.707 m

Therefore, the height that the shot reaches above the ground is 0.707 m. (DETAIL ANS)

C) Sam's height is 1.73 m above the ground.

We can find the time taken by the shot to reach the height of Sam's head using the equation v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time taken

.v = u + atv = 0 + (36.0 m/s²)t = 36.0tt = v / at = (7.04 m/s) / (36.0 m/s²) = 0.196 s

Therefore, the time taken by the shot to reach the height of Sam's head is 0.196 s. .

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Answer:

it lets out the air inside the balloon and I´m pretty sure it would hit the wall while the air was being let out.

The length of the wire forming a solenoid 1.20 m long and 3.60 cm in diameter carries a current of 24.2 A and the magnetic field inside the solenoid is 33.4 mt is 0.365 meters.

To find the length of wire forming the solenoid, we can use the formula for the magnetic field inside a solenoid:

B = μ₀ * n * I

Where B is the magnetic field, μ₀ is the permeability of free space (4π x 10^-7 T m/A), n is the number of turns per unit length, and I is the current.

We can rearrange this formula to solve for n:

n = B / (μ₀ * I)

Substituting the given values, we get:

n = 33.4 x 10⁻³ T / (4π x 10⁻⁷ T m/A × 24.2 A)

= 358.8 turns/m

To find the length of the wire, we need to know the total number of turns in the solenoid. We can estimate this by assuming that the solenoid is tightly wound with no gaps between the turns. In this case, the length of wire per unit length of the solenoid is given by:

l = π * d² / 4

Where d is the diameter of the solenoid. Substituting the given values, we get:

l = π * (3.60 x 10⁻² m)² / 4

= 1.016 x 10⁻³ m/turn

The total length of wire in the solenoid is then:

L = n × l

= 358.8 turns/m × 1.016 x 10⁻³ m/turn

= 0.365 m

Therefore, the length of wire forming the solenoid is approximately 0.365 meters.

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To sterilise a 50.0-g glass infant bottle, we must increase its heat from 22.0 to 95.0 degrees Celsius, or 3066 J of heat is transferred.

Heat is the result of the movement of kinetic energy within a material or an item, or from form of energy to a material or an object. Electromagnetic energy can be transported using three different mechanisms: radiation, conduction, and convection. Conduction of heat through solids, convection of liquids and gases, and electromagnetic radiation (radiation).

When a substance is subjected to a material-specific phase-change temperature, the material immediately undergoes a phase shift from a solid to a liquid. sources include solar energy, heat pumps, deep geothermal heat pumps, nat gas, lpg (LP), oil, coal, and wood.

50.0 g (0.84 J/g C) of heat was transported (95 C - 22 C)

= 3066 J of heat transferred

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Answer:

8.22m

Explanation:

As interpreted from this problem, the angle of launch is 90 degrees as it is thrown straight up. Given an angle launch of 90°, upward initial velocity of 12.7m/s, and initial height of 0m. A much simpler equation can be used to find the maximum height.

\(h_{max} = h_ {0} + \frac{{v_0}^{2} }{2g}\)

this means that the max height is equal to the initial height plus the initial velocity squared divided by 2 times the acceleration of earth's gravity(≈9.8m/s^2 or 10m/s^2 depending on how you fix it).

when substituted into the equation, you should get.

(9.8m/s^2)

hmax = 0 + ((12.7)^2)/(2*9.8)

hmax = 161.29/19.6 ≈ 8.22

hmax = 8.22m

Answer:

Explanation:

Since the forces are only in the x-direction, you could just add the two forces. The West is to the left, so it would be -25N with the negative sign indicating direction. The East is to the right, so that would be +50N.

50 + (-25) = 25N to the right or the positive i-hat direction

Answer:

i think it is car B because  the greater the speed, the greater the drag force acting on the vehicle

Explanation:

Plasma helps to produce fluorescent lightbulbs.

A fluorescent lamp generates light from collisions in a hot gas of free accelerated electrons with atoms.

Plasma is an electrically quasineutral medium of unbound positive and negative particles.

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Answer:

15

Explanation:

225/(165-150)=15g/cm3

3.375m/s is the final velocity of the car.

The final velocity depends on how large the acceleration is and the distance over which it acts.

Initial velocity of an object, you can multiply the acceleration due to a force by the time the force is applied and add it to the initial velocity to get the final velocity.

According to the question,

A toy car starts from the rest and accelerates

So the acceleration = 1.50m/s²

Time =  2.25s

\(x=x_{0} + vt\)

\(x = 0 + ( 1.50m/s^2*2.25s)\)

\(x = 3.375m/s\)

The final velocity, of the car is 3.375 m/s.

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Answer:

electron

Explanation:

The electron is the subatomic particle with the least mass. Therefore option A is correct.

Both protons and neutrons have significantly larger masses compared to electrons.

The mass of an electron is approximately 9.1 x 10^-31 kilograms, while the mass of a proton is about 1.67 x 10^-27 kilograms, and the mass of a neutron is also around 1.67 x 10^-27 kilograms.

It's important to note that the "atom" is not a subatomic particle but a structure composed of subatomic particles. An atom consists of a nucleus (composed of protons and neutrons) and electrons orbiting around the nucleus.

The mass of an atom depends on the number of protons, neutrons, and electrons it contains, so it can vary widely depending on the specific atom.

In summary, when comparing individual subatomic particles, the electron has the least mass.

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Answer: 17,423 J

Explanation:

Potential Energy = mass x gravity x height

PE = 74kg x 9.81m/s^2 x 24 m

PE = 17,423 J

The required value of gravitational potential energy gained by the person is 17422.56 J.

Given data:

The lifting height is, h = 24 m.

The mass of person is, m = 74 kg.

The energy possessed by the person by virtue of its position is known as gravitational potential energy of the person. The expression for the gravitational potential energy of person is given as,

U  = mgh

Here,

g is the gravitational acceleration.

Solving as,

\(U = 74 \times 9.81 \times 24\\\\U =17422.56\;\rm J\)

Thus, we can conclude that the required value of gravitational potential energy of person is 17422.56 J.

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Answer:

Little to no change in temperatures between seasons.

Reason: because i got it right on the test, and i smart

Answer:

Little to no change in temperatures between seasons.

Explanation:

I can confirm this is right

Hi there!

We can begin by finding the final VERTICAL velocity of the ball.

Use the following kinematic equation: vf² = vi² + 2ad

The ball does not have any initial velocity in the vertical direction so:

vf² = 2ad

Plug in given values:

vf² = 2(9.81)(44) = 29.38 m/s

Find the TOTAL speed using the pythagorean theorem (involving both the horizontal velocity which remains the same and vertical velocity)

v = √(21²) + (29.38²) = 36.115 m/s

If the speed of an object does not change the object Is traveling at a constant speed

To measure the frictional torque exerted on the platform while it rotates, the student should use an experimental procedure involving a few different pieces of apparatus.

A form of force known as friction opposes the motion of two surfaces coming into contact. When two objects come into contact with one another, this force makes them oppose motion. Friction is what causes things to move more slowly, keeps them from slipping and sliding, and gives us a hold as we walk. It enables us to push or drag objects around as needed. The surface materials, surface area in contact, and pressure applied all affect how much friction there is between two objects.

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Answer:

protein synthesis

Explanation:

A pesticide kills insects by disabling the ribosomes in their cells. The function that would be most immediately in the insects' cells is protein synthesis. The correct option is A.

Pesticides are the chemicals that are used to kill insects and other microbes that infect the crops and other things. Pesticides are very harmful for health of other animals and humans. They also cause disabilities in birds which eat the insects killed by pesticides.

Protein synthesis is a process of synthesizing protein in the cell. This process done by cell organelles and DNA and RNA. Pesticides degenerate the process of protein synthesis in insects, they eventually die due to no working of cell.

Thus, the correct option is A Protein synthesis.

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To maximize the objective function p with the given constraints, we use linear programming by identifying the feasible region.

Finding corner points, evaluating p at each point, and selecting the point with the maximum value of p.In this case, the given constraints are x = 0, y = 0, 2x + 2y = 4, and x + y = 8. To maximize the objective function p, we follow these steps:Identify the feasible region by graphing the constraints on a coordinate plane.

The corner points, which represent the vertices of the feasible region.Evaluate the objective function p at each corner point.Select the point with the maximum value of p as the optimal solution that maximizes p while satisfying the given constraints.

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