A projectile is fired straight up from the south pole of earth with an initial speed vi = 15km/s. find the speed of the projectil when it is very far from the earth, neglecting air resistance

The correct option is A. acceleration.

For freely falling objects near Earth's surface, acceleration is constant. An object that is allowed to fall freely under the influence of Earth's gravity is known as a freely falling object. Gravity is an acceleration that acts on any two masses.

For freely falling objects near Earth's surface, the acceleration is indeed constant. This fundamental concept is a result of gravity's influence on objects in free fall. When an object is in free fall, it means that no forces other than gravity are acting upon it. In this scenario, the acceleration experienced by the object remains constant and is equal to the acceleration due to gravity, which is approximately 9.8 meters per second squared (m/s²) near Earth's surface.

The constancy of acceleration in free fall can be attributed to the consistent force of gravity acting on the object. Gravity pulls objects downward towards the center of the Earth, causing them to accelerate uniformly. Regardless of the object's mass, shape, or composition, the acceleration remains constant. This is known as the equivalence principle, which states that all objects experience the same acceleration due to gravity in the absence of other forces.

As an object falls freely, its velocity increases at a steady rate. Each second, the object's velocity increases by approximately 9.8 m/s. This means that in the first second, the velocity increases by 9.8 m/s, in the second second it increases by an additional 9.8 m/s, and so on. The consistent acceleration enables the object to cover greater distances in successive time intervals.

In conclusion, for freely falling objects near Earth's surface, the acceleration remains constant at approximately 9.8 m/s². This constancy arises from the unchanging force of gravity acting on the objects, leading to a uniform increase in velocity over time.

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Actually Welcome to the Concept of the Current Electricity .

Since we know that, Current is Charge per unit time.

so we get as,

Q = I*t

here, Q = charge, I = current, t = time.

The solar wind penetrates the Earth's atmosphere much more at the geomagnetic north and south poles due to the configuration of Earth's magnetic field lines.

Earth's magnetic field is generated by its core and creates a protective shield called the magnetosphere. This shield is important because it deflects harmful solar wind particles away from Earth's atmosphere. The magnetic field lines are shaped like loops that extend from the geomagnetic north and south poles. The field lines are more concentrated and closer to the Earth's surface at the poles, which allows solar wind particles to follow these lines and penetrate deeper into the atmosphere at the poles compared to other regions. This increased penetration at the poles is what causes phenomena such as auroras, where charged particles interact with the Earth's atmosphere to create beautiful light displays.

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Answer:

The answer is Low earth orbit

ears

Explanation:

I want to eat your ears

Answer:

A

Explanation:

They drove 30km north. The displacement adds up to 25km therefore making the distance greater

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The equilibrant force is equal in magnitude and opposite in direction to the resultant force.

Since the resultant force is 10 N in the positive y axis direction (North), the equilibrant force is 10 N in the negative y axis direction (South). An equilibrant force is a force that can balance or counteract the effect of other forces acting on an object.

It has the same magnitude as the resultant force, but it acts in the opposite direction, resulting in a state of equilibrium where the net force acting on the object is zero.

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The distance from the Sun where ice and gases become prevalent on a planet's surface relative to liquid water is defined as the frost line.

A frost line also known as frost depth or freezing depth, is the depth to which the groundwater in soil is expected to freeze.

It is the distance from the Sun where ice and gases become prevalent on a planet's surface relative to liquid water.

Thus, the distance from the Sun where ice and gases become prevalent on a planet's surface relative to liquid water is defined as the frost line.

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The product among alcohol, gasoline, travel souvenirs, cigarettes that will have elastic demand is cigarettes.

Elastic demand refers to a situation in which a change in the price of a good or service results in a more significant change in the amount demanded. When the percentage change in quantity demanded is greater than the percentage change in price, the demand for the product is said to be elastic.

When the quantity demanded of a product decreases significantly when the price rises, the demand for the product is said to be elastic. Similarly, when a slight change in price causes a significant change in quantity demanded, the demand is said to be elastic. Conversely, if a product's price increases by a small percentage, and the demand for the product decreases by a smaller percentage, the demand for the product is said to be inelastic.

Cigarettes, of all the products listed above, are likely to have an elastic demand.

This is because smokers who are addicted to cigarettes are more likely to quit smoking or reduce their consumption in response to an increase in the price of cigarettes compared to the other goods.

Thus, a slight increase in the price of cigarettes is likely to cause a significant decrease in the number of cigarettes consumed.

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The work done by the motor is 196×10⁴Joules, if a motorized cable moves a 2000kg elevator upwards for 10m.

We know that from The work-energy hypothesis, otherwise called the rule of work and dynamic energy, expresses that the all out work done by the amount of the multitude of powers following up on a molecule is equivalent to the adjustment of the motor energy of that molecule. This clarification can be reached out to inflexible bodies by portraying crafted by rotational motor energy and force

In order words, W=F.dx

where F is the force applied on the body, dx is the displacement of the body.

Now, for calculating force we know that gravity is acting on it

So, force applied on the body is =mg where m is the mass and g is acceleration due to gravity.

We have m=2000kg and g=9.8m/sec²

So, value of mg=2000×9.8=19600.0=19600N

Now, we have displacement(dx)=10m

So, work done=196000 × 10=1960000Joules or 196×10⁴Joules.

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Solution: given that; velocity (v)=60km/hr, distance (d)=500km, time (t)=? From velocity=distance/time....... :. 60=500/t, cross-multiply..... 60t=500, divide both sides by 60...... 60t/60=500/60, t=500/60, t=8.33~. Therefore the bus took 8hours, 33 minutes to cover the distance of 500km.

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Answer:

3.75m/s

Explanation:

Velocity of a body is its displacement divided by time taken;

     Velocity  = \(\frac{displacement}{time}\)  

Displacement is the distance from the starting point.

 Here:

                                                    ------------------------------------------- 20m

   40m ------------------------------------------------------------------------------

           --------------------------------------------------------------------35m

 Displacement  = 35m  - 20m = 15m

   Time taken = 4s

  Velocity  = \(\frac{15}{4}\)    = 3.75m/s

Answer:

The iron atom has a positive charge, making it a cation.

Explanation:

The atom has a nucleus, where the protons and neutrons, which are the subatomic particles with the highest mass, are located. Practically all the mass of the atom is concentrated in the nucleus.Protons have a positive electrical charge, while neutrons have no charge.

Electrons move around the nucleus with other negatively charged particles.

An iron atom (Fe) has 26 protons and 20 electrons in it.  That is, there are 6 more protons than electrons. As mentioned, protons are positively charged. So the iron atom has a positive charge, making it a cation.

The tension in the cable on the right is 550 lbs, and the tension in the cable on the left is also 550 lbs when supporting the 1100-lb weight.

For determining the tension in each cable, consider the given weight of 1100 lbs. Since the weight is supported by two cables, assume that each cable shares an equal portion of the load.

Denote the tension in the cable on the right as \(T_1\) and the tension in the cable on the left as \(T_2\). Since the weight is balanced and the cables are vertical, the total tension in both cables should be equal to the weight.

Therefore, have the equation:

\(T_1 + T_2 = 1100 lbs\)

Since both cables share the weight equally, can set up another equation:

\(T_1 = T_2\)

By substituting the value of \(T_1\) from the second equation into the first equation:

\(T_2 + T_2 = 1100 lbs\\2T_2 = 1100 lbs\\T_2 = 550 lbs\)

Since \(T_1\) is equal to \(T_2\), can conclude that the tension in each cable is 550 lbs.

In conclusion, the tension in the cable on the right is 550 lbs, and the tension in the cable on the left is also 550 lbs when supporting the 1100-lb weight.

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Answer: Milky Way

Explanation:

The measure of the angle WXY after applying appropriate propertiy is ∠WXY = 107°.

The angle sum property of a quadrilateral states that the sum of the interior angles of any quadrilateral is always equal to 360 degrees. This means that if you draw any quadrilateral, such as a square, rectangle, or parallelogram, and measure the angles inside the shape, the total of all those angles will always add up to 360 degrees.

Given a structure WXYZ with measure of ∠Y = ∠Z = 90° and ∠W=73°.

We have to find measure of ∠X .

Since, WXYZ is a closed figure having 4 sides, so it is a quadrilateral.

ANGLE SUM PROPERTY OF QUADRILATERAL

Sum of angles of a quadrilateral is always 360°

Thus, applying angle sum property to the given quadrilateral.

∠Y + ∠Z + ∠W + ∠X = 360°

90° + 90° + 73° + ∠X = 360°

253° + ∠X = 360°

∠X = 360° -253°

∠X = 107°

Thus, measure of angle ∠WXY = 107°.

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Answer:

WXY= 107

Explanation:

just did it

Answer:

A. There is hydrogen bonding between water molecules

Explanation:

Boiling point is a physical property of matter. It is typically conditioned by the intermolecular forces present between the molecules of a compound.

Answer:

A)

Explanation:

There is hydrogen bonding between water molecules

The mixture is not homogeneous because kerosene and water do not mix completely, and there will be a visible separation between the two liquids.

To find the resulting mixture of kerosene and water, we need to calculate the total mass and total volume of the mixture.

The total mass of the mixture is the sum of the masses of kerosene and water:

mass of mixture = mass of kerosene + mass of water

mass of mixture = 32 g + 8 g

mass of mixture = 40 g

To find the total volume of the mixture, we can use the formula for density:

density = mass / volume

Rearranging this formula to solve for volume, we get:

volume = mass / density

For the kerosene, we know the density is 0.80 g/cm^3, so the volume of kerosene is:

volume of kerosene = mass of kerosene / density of kerosene

volume of kerosene = 32 g / 0.80 g/\(cm^3\)

volume of kerosene = 40 \(cm^3\)

For the water, we can use the density of water, which is approximately 1 g/cm^3:

volume of water = mass of water / density of water

volume of water =\(8 g / 1 g/cm^3\)

volume of water = 8\(cm^3\)

Therefore, the total volume of the mixture is:

total volume of mixture = volume of kerosene + volume of water

total volume of mixture = \(40 cm^3 + 8 cm^3\)

total volume of mixture = \(48 cm^3\)

So the resulting mixture contains 32 g of kerosene and 8 g of water in a total volume of \(48 cm^3.\)

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To double the volume of a nucleus, the mass number must be increased by a factor of 8. The volume of a nucleus can be approximated as being proportional to the mass number (A) raised to the power of 2/3.

Mathematically, this can be represented as:

V ∝ A^(2/3).

To double the volume, we need to find the factor by which the mass number (A) should be increased. Let's denote this factor as 'x'. So, the new mass number would be (A * x). We can set up the equation:

2V = V' = (A * x)^(2/3).

Since we want to find the factor by which the mass number must be increased, we can write the equation as:

2 = (x^(2/3)).

To solve for x, we need to cube both sides of the equation:

2^3 = (x^(2/3))^3.

8 = x^2.

Taking the square root of both sides:

√8 = √(x^2).

√8 = x.

Simplifying:

x ≈ 2.8284.

Therefore, to double the volume of a nucleus, the mass number must be increased by a factor of approximately 2.8284, which can be rounded to 8.

To double the volume of a nucleus, the mass number must be increased by a factor of approximately 8. This relationship is derived from the proportionality between volume and the mass number raised to the power of 2/3.

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The energy transported by the wave increases by a factor of 9,

The energy transported by a wave is proportional to the square of its amplitude. Therefore, if the amplitude of the wave increases from 0.5 meters to 1.5 meters, the energy transported by the wave increases by a factor of

\((1.5/0.5)^2 = 9.\)

Wave amplitude is the maximum displacement or distance moved by a particle of the medium from its rest position when a wave passes through it. In simpler terms, it is the height of the wave from its equilibrium position. The amplitude is usually measured in meters (m), centimeters (cm), or sometimes in units of pressure, such as Pascals (Pa) for sound waves.

Energy transferred by a wave refers to the amount of energy that the wave carries as it travels through a medium.

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Answer:

Genotypes are determined by tests. Genotype and phenotype sound the same but mean different things. The phenotype is determined by your genotypes and by your genes or traits, like hair color or type, eye shape and color, body and height. Were all unique, even identical twins, based on the way they look or act. Your uniqueness is based on your genetic make-up, that we inherited from our parents.

Is this better?

Brainliest please!

Answer:

Your answer is given below:

Explanation:

In general, the shorter the wavelength, the greater the danger to living things. Although longer wavelengths also have their hazards, very short wavelengths, such as X-rays and gamma rays, can easily damage living tissue

UV radiation is more damaging when its wavelength is shorter. Shorter wavelength UV light, however, has a lower ability to enter skin. Three bands make up the UV area, which has a wavelength range of 100 to 400 nm. UVA (315-400 nm) (315-400 nm)

A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. Its length in wireless systems is typically expressed in metres (m), centimetres (cm), or millimetres (mm) (mm).

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Answer:

1040

Explanation:

The rules for significant digits is that non-zero digits are significant figures. The  zero in between 1 and 4 is significant because any zeroes between two significant digits are significant. Trailing zeroes if there is no decimal point are insignificant.

The number 1045.2 rounded to three significant digits would be 1040 because the rightmost zero is not a significant digit.

In positional notation, significant figures refer to the digits in a number that is trustworthy and required to denote the amount of something, also known as the significant digits, precision, or resolution.

The definition of a significant digit according to the criteria is a non-zero digit. Any zeroes between two significant digits, such as the one between 1 and 4, are noteworthy. In the absence of a decimal point, trailing zeroes are not relevant.

According to the criteria for significant digits, non-zero digits are important numbers. The zero between 1 and 4 is crucial, as is any zero between two significant digits. The trailing zeroes are irrelevant if there is no decimal point.

Thus, the number 1045.2 rounded to three significant digits would be 1040.

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Answer: accretion......

Answer:

I think true but im not sure sorry if this didnt help/

Explanation:

Answer:

true 50%

Explanation:

Torque:-

\(\\ \rm\Rrightarrow \tau =14(0.018)\)

\(\\ \rm\Rrightarrow \tau=0.25Nm\)

option B

The 13th Amendment to the United States Constitution provides that "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction."

In other words:

Nobody can be a slave or work against their will in any place controlled by the USA, except if they're sentenced to jail or prison for a crime.

The 13th amendment, which was adopted by Congress on Jan 31, 1865, and ratified by the states on December 6, 1865, declared slavery to be illegal throughout the country and in any location under their jurisdiction. It also states that "Neither “ neither slavery nor involuntary, except as a punishment for offense whereof the group shall have indeed been duly found guilty, shall exist."

An amendment can change or add to the terms of a contract or other legal document. A latest arrival or alteration to a document that substantially preserves its integrity is called an amendment.

Common synonyms for amend include correct, emend, rectify, redress, reform, remedy, and revise. All of these words pertain to "setting right what's genuinely wrong," but only amend, reform, and revise suggest improvement via corrective revisions, with amend often denoting minor changes alter a law.

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