under what circumstances do we see a comet with a nucleus, coma, and tails? match the words in the left column to the appropriate blanks in the sentences on the right.

Answer:

add 44m/s and 22m/s then multiply it by 11

Explanation:

A race car traveling at 44m/s slows at a constant rate to a velocity of 22m/s over 11 seconds, Acceleration is -2 m/s² (deceleration), and distance is 242 meters.

To solve this problem, it is given:

Initial velocity (\(\(v_i\)\) ) = 44 m/s

Final velocity (\(\(v_f\) ) = 22 m/s

Time (\(\(t\)\) ) = 11 s

We have two tasks: finding the acceleration (a) and then using it to calculate the distance (d).

1. Calculate Acceleration (a):

\(\[a = \frac{v_f - v_i}{t} \\\\= \frac{22 \, \text{m/s} - 44 \, \text{m/s}}{11 \, \text{s}} \\\\= -2 \, \text{m/s}^2\]\)

The negative sign indicates deceleration (slowing down).

2. Calculate Distance (d):

Using the kinematic equation:

\(\[d = v_i \cdot t + \frac{1}{2} \cdot a \cdot t^2\]\)

Plugging in the values:

\(\[d = (44 \, \text{m/s}) \cdot (11 \, \text{s}) + \frac{1}{2} \cdot (-2 \, \text{m/s}^2) \cdot (11 \, \text{s})^2\]\)

Calculating the first part:

\(\[d = 484 \, \text{m} - 121 \, \text{m} \\\\= 363 \, \text{m}\]\)

Calculating the second part:

\(\[d = 363 \, \text{m} + \frac{1}{2} \cdot (-2 \, \text{m/s}^2) \cdot (121 \, \text{s}^2) \\\\= 363 \, \text{m} - 121 \, \text{m} \\\\= 242 \, \text{m}\]\)

The total distance the race car moves during this time is 242 meters.

Thus, acceleration is -2 m/s² (deceleration), and distance is 242 meters.

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Answer:

The x - component of vector B is determined as -18.3 m.

What is x-component of  a vector?

The x-component  or horizontal component of a vector is the value of the vector acting or pointing x direction  or in a horizontal direction.

The x-component or horizontal component of a vector on a given plane calculated as follows;

Bx = B cos(θ)

where;

The given parameters include the following;

Substitute the given parameters into the above equation and for the x-component of vector b.

Bx = 18.6 x cos(170)

Bx = -18.3 m

Thus, from the magnitude of vector B in the image, the value of vector B in x - direction is -18.3 m.

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When a 9.0 V battery is connected to a bulb and 0.1 A of current flows through it, the resistance of the bulb is 90 ohms.

When a 9.0 V battery is connected to a bulb and 0.1 A of current flows through the bulb, we can calculate the resistance of the bulb using Ohm's Law. Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance.

To find the resistance, we can rearrange Ohm's Law equation (V = IR) to solve for R, where V is the voltage, I is the current, and R is the resistance.

First, let's plug in the given values:

V = 9.0 V (voltage)
I = 0.1 A (current)

Now, we can rearrange the equation to solve for R:

R = V / I

Substituting the given values:

R = 9.0 V / 0.1 A

Dividing 9.0 V by 0.1 A, we get:

R = 90 ohms

Therefore, the resistance of the bulb is 90 ohms.

In summary, when a 9.0 V battery is connected to a bulb and 0.1 A of current flows through it, the resistance of the bulb is 90 ohms.

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a) To sketch the graph of the object's velocity vs. time, we need to integrate the acceleration vs. time graph. The velocity is the area under the acceleration vs. time graph.

We can plot the velocity on the y-axis and time on the x-axis. The graph will show the velocity changing over time. Important points on the graph may include the initial velocity at time t = 0, any peaks or valleys, and any moments where the velocity is zero.

b) To determine the object's change in velocity over the first 8 seconds of its motion, we need to calculate the area under the acceleration vs. time graph from t = 0 to t = 8 seconds. This area represents the change in velocity during that time interval.

c) To identify when the object is moving with a constant speed, we need to look for sections on the velocity vs. time graph where the velocity remains constant, resulting in a flat line. The times at which the object switches its direction of motion can be identified by observing the points on the graph where the velocity changes sign, indicating a change in direction.

d) To find the object's total displacement over the first 6 seconds of its motion, we need to calculate the area under the velocity vs. time graph from t = 0 to t = 6 seconds. This area represents the displacement of the object during that time interval.

It is important to note that without the specific shape and values of the acceleration vs. time graph, it is difficult to provide a detailed explanation or numerical answers for parts b, c, and d. The specific characteristics of the graph would be needed to provide accurate calculations and descriptions of the object's motion.

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Answer:

vegetables food, sport sport sport

Explanation:

????!!!!

Answer:

7808 m/s

Explanation:

Find NE velocity after 60 s  of acceleration in that direction:

  = a t  =  28.4 m/s^2 * 60 s = 1704  m/s

    Vertical component = 1704 sin 45 = 1204.9 m/s

     Horiz component = 1704 cos 45 = 1204.9  m/s

Add the two vertical components

  6510 + 1204.9 = 7714.9 m/s = vertical velocity

Pythagorean theorem to find resultant of vertical and horiz  v's

Vf ^2 = 1204.9^2   + 7714.9^2 0

Vf = 7808. m/s

Answer: 81.1 for the direction of its velocity and 7808 for the magnitude of its velocity

Explanation:

The partial pressure of oxygen in the alveoli is approximately 104 mm Hg, while the partial pressure of carbon dioxide is around 40 mm Hg.

These partial pressures are important in the process of gas exchange that occurs in the lungs. Oxygen is delivered to the alveoli via inspiration, and diffuses across the alveolar membrane into the pulmonary capillaries where it binds to hemoglobin in red blood cells. Carbon dioxide, which is a waste product of cellular metabolism, is transported from the capillaries into the alveoli where it is expelled from the body during exhalation.

The difference in partial pressures of oxygen and carbon dioxide between the alveoli and capillaries drive the movement of gases during gas exchange. If there is an imbalance in these partial pressures, it can result in respiratory problems such as hypoventilation or hyperventilation. The partial pressure of oxygen in the alveoli is approximately 104 mm Hg, while the partial pressure of carbon dioxide is around 40 mm Hg.

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The coefficient of kinetic friction between the box and the surface is approximately 0.612.

The force of kinetic friction can be calculated using the formula:

Force of kinetic friction = coefficient of kinetic friction * Normal force

Since the box is at rest, the normal force is equal to the weight of the box, which can be calculated as:

Normal force = mass * gravitational acceleration

Normal force = 49 N

Given that the applied force is 30 N and the box is moving with constant velocity, the force of kinetic friction must be equal in magnitude and opposite in direction to the applied force.

Thus,  

Force of kinetic friction = Applied force

coefficient of kinetic friction * Normal force = Applied force

coefficient of kinetic friction = Applied force / Normal force

coefficient of kinetic friction = 30 N / 49 N

coefficient of kinetic friction ≈ 0.612

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Answer:

The skater has mechanical/gravitational potential energy at the two meter mark. The skater gets to two meters high on the other end of the ramp. In terms of the conservation of energy, the skater will never go higher than two meter on the other end of the the ramp because energy can be neither created nor destroyed.

Explanation:

I hoping it is right!!!∪∧∪     ∪ω∪

Answer:

the reason it wont go higher is because some of the energy converts into thermal energy

Explanation:

I'm the energy master

All electrons have energy stored in them which is potential energy.

Pressure increases the electron's kinetic energy causing it to move faster and eventually jump to a wider orbit. Each electron then stores energy, which becomes potential energy. Kinetic energy can be converted into other forms of energy and vice versa. For example, kinetic energy is converted into electrical energy by a generator or into thermal energy by a car's brakes.

Energy is not destroyed or lost in the transition from potential energy to kinetic energy. It just converts from one type of energy to another type of energy. This is known as the law of conservation of energy. When a person rides a bicycle to the top of a hill, the kinetic energy of movement is converted into potential energy and stored in the bicycle at the top of the hill. The potential energy stored in the bike at the top of the hill can be used to roll the bike down the hill.

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Answer:

100Ns

Explanation:

find velocity and then plug into momentum formula momentum=(velocity)(mass)

Answer:

5,000 kg-m/s going south

Explanation:

Since you're only given mass and height, not velocity. You have to find velocity first. The equation for velocity is v=2gh. We know gravity is 10 since it's given & height is also given which is 125m. After doing the math, it's 2,500. Now that you have velocity, you can plug velocity into the formula for momentum which is p=mv. 2.0 times 2,500 = 5,000 kg-m/s going south.

Answer:

10cm

Explanation:

Answer:

18 degrees Celsius is equivalent to 64.4 degrees Fahrenheit.

Explanation:

To convert Celsius to Fahrenheit by using the formula

: (°C x 1.8) + 32 = °F

18 °C = 64.4 °F . Fahrenheit is a temperature scale created by German physicist Daniel Gabriel Fahrenheit in 1724.

What is Fahrenheit?

On this scale, temperature is measured by the expansion of a liquid, specifically a mercury-in-glass thermometer. The scale is based on three fixed points: the freezing point of pure water is defined as 32°F and the boiling point of pure water is defined as 212°F. The third point, 96°F, was determined to be body temperature. On the Fahrenheit scale, the difference between the freezing point and the boiling point of water is 180°F. There are 180 intervals between the two fixed points, and each interval is one degree.

The degree Fahrenheit (°F) is the most commonly used unit of temperature in the United States. 18 x (9/5) + 32 = 64.4°F

Therefore,  18 °C = 64.4 °F

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Answer:

The word physics originates from Greek word meaning nature physics is therefore a science dealing with the study of nature and various natural phenomenon.Physcis is the branch of science which deals with the study of matter,energy and the relationship between them.

Science is derived from the Greek word scientia which means knowledge science is defined as the knowledge gathered from observations and experimentations.

Explanation:

Hope it will help you. :)

Answer:A

Explanation:

This question involves the concept of the scalar product.

The magnitude of the scalar product will be "0".

The scalar product, also known as the dot product of the two vectors is given by the following formula:

\(A.B = |A||B|Cos\theta\)

where,

Therefore,

\(A.B = (1)(1)Cos90^o = (1)(1)(0)\)

A.B = 0

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Using standard heat of formation we can calculate the standard enthalpy Change for this reaction.

What is reaction?

Reaction is a process that's leads to the chemical transformation of one set of chemical substances to another.

Sol-In this question they have us that using standard heats of formation, so here we have to use standard heats of formation, so by using standard heats of formation, we have to calculate standard enthalpy change. So here we have to calculate standard enthalpy change for the particular reaction. So what is the given reaction for that? We have to find out standard, enthalpy change, so the reaction here. It is c that is the solid graphite plus oxygen gas. It gives rise to c to gas. This is the reaction for this reaction. We have to find out standard heat of formation. That is so here we have to. By using standard heat of formation, we have to calculate standard enthalpy change. That is the question, so we know that standard heat of formation of graphite- that is the graphite graphite. That is equal to 0 kilo, joules per mole, so here there's a hitch of formation of oxygen gas, oxygen gas that is equal to 0. So this is the 0 kilo joules per mole and here also delta hedge of formation of oxygen. Gas is equal to 0 kilo, joulesper mole, so delta h of the formation of carbon dioxide gas. So it will be, it is so what it be. It will be. The minus 393.5 kilo joules per mole, so delta h of formation of carbon dioxide gas, is equal to minus 393.5 kilo joules per mole. This is the ans.

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Answer:

mechanical energy

Explanation:

Sound energy is the result when a force, either sound or pressure, makes an object or substance vibrate. That energy moves through the substance in waves. Those sound waves are called kinetic mechanical energy.

The statement that describes what happens in the graph is option (B).

The lander's velocity decreases toward the reference.

Velocity time graph is a type of graph that describes the change in velocity with respect to time of motion of an object.

Below is the basic explanation of the behavior of the average velocity of the particle with time.

Thus, we can conclude that between 20 and 25 seconds in the velocity tike graph, the average velocity of the object decreased towards the reference point (reference velocity = - 40 m/s.).

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Answer:b

Explanation:

A steel ball, a magnet, and a piece of paper are used in an activity by a pupil. The ball is under the influence of the magnet. Therefore, choice A is right.

When electric charges move, a phenomenon known as magnetism is produced. These tiny movements can occasionally be found inside a material known as magnets. Magnets and the magnetic fields created by moving electric charges can attract or repel other magnets, which can also change how other charged particles move.

Because they can support a magnetic field that lasts forever, some materials, like iron, are categorized as permanent magnets. These are the magnets that are typically encountered in day-to-day life. Other materials like iron, cobalt, and nickel can be briefly given a magnetic field when placed inside a stronger, bigger magnetic field, but they will eventually lose their magnetic qualities.

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Answer:

The word stoichiometry is a technical chemical term derived from the two Greek roots stoicheion, "element", and metron, "measure". Chemical stoichiometry is the area of chemistry which deals with the quantitative relationships between numbers of atoms involved in matter. Since very large numbers of atoms are needed to make up real objects which we can conveniently handle, the unit of amount of substance contains a large number of atoms. That unit of amount of substance is called the mole.

Explanation:

Answer:

The mole is the SI (stoichiometry) unit for ammount of substance

Explanation:

hope this helps

So here, we use the equation:

W = ΔKE + ΔPE

Recall that: KE = 0.5mv^2, and PE = qdΔV/D

ΔKE = 0.5m(v2)^2 - 0.5m(v1)^2, where v2 and v1 are Initial and final velocity respectively.

ΔPE = PE2 - PE1

PE2 = 0, since all energy is converted to other forms, mainly kinetic energy.

PE1 = q(d1)ΔV/D

Here, W = 0.

0 = 0.5m(v2)^2 - 0.5m(v1)^2 + 0 - q(d1)ΔV/D

Simplifying a bit, and knowing that d1 = D,

0 = 0.5m((v2)^2 - (v1)^2) - qΔV

Moving qΔV to the other side,

qΔV = 0.5m((v2)^2 - (v1)^2)

Dividing by q and isolating ΔV,

ΔV = 0.5m * ((v2)^2 - (v1)^2) / q

Now, we have ΔV, which is the electric potential difference, in terms of all the variables we know.

m = 9.1 * 10^-31

v2 = 1 * 10^6

v1 = 5 * 10^6

q = 1.602 * 10^-19 (this is a well known constant)

ΔV = 0.5*9.1*10^-31 * ((5*10^6)^2 - (1*10^6)^2) / 1.602*10^-19

Solving and simplifying all of this, we get that

ΔV = 68.25 V

The car travels approximately 208.3 feet before coming to a complete stop.To determine how many feet the car travels before coming to a complete stop, we will first find the time it takes for the car to stop and then calculate the distance traveled during that time.

1. Calculate the time to stop (t):
The car decelerates at a constant 6 ft/sec². To find the time it takes to stop, we will use the formula:
Final velocity (v) = Initial velocity (u) - (deceleration × time)
0 = 50 - (6 × t)
6t = 50
t = 50 / 6
t = 8.33 seconds

2. Calculate the distance traveled (s):
Now that we have the time it takes to stop, we can calculate the distance the car travels before stopping. We can use the formula:
s = ut - 0.5 × a × t²
where:
s = distance traveled
u = initial velocity (50 ft/sec)
a = deceleration (6 ft/sec²)
t = time to stop (8.33 seconds)
Plugging in the values:
s = (50 × 8.33) - (0.5 × 6 × 8.33²)
s = 416.5 - 0.5 × 6 × 69.4
s = 416.5 - 208.2
s = 208.3 feet

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When a light wave enters a medium of greater optical density, two of the characteristics that will decrease in the wave are its speed and wavelength.

A light wave is a form of electromagnetic radiation that can be seen by the human eye. It is characterized by its wavelength, frequency, and speed, all of which are related to the properties of the medium in which it is traveling.

When a light wave enters a medium of greater optical density:

Speed decreases:

When light passes from air into a denser medium such as water, it slows down due to the interaction between the photons and the atoms or molecules of the material. This is due to the fact that the speed of light is inversely proportional to the refractive index of the material. As a result, when the refractive index of the medium is higher, the speed of light is lower.

Wavelength decreases:

The wavelength of light decreases when it passes from one medium to another. This is due to the fact that the speed of light in a medium is determined by the product of its wavelength and frequency, and since the speed of light decreases as it passes from one medium to another, the wavelength must also decrease to maintain this relationship.

Thus, the two characteristics that will decrease in a light wave when it enters a medium of greater optical density are its speed and wavelength.

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The point of origin is the three dimensional location while the point of convergence is the area containing intersections.

Blood pattern analysis is usually used by the forensic specialists to determine the facts surrounding an investigation using physical nature of blood stains.

There are different types of blood analysis but the one that was displayed in the picture is the impact spatter patterns which contains a point of origin and point of convergence.

The point of origin is the three-dimensional location from which blood spatter originated while the point of convergence is the area containing the intersections generated by lines drawn through the long axes of individual stains that indicates in two dimensions the location of the blood source.

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(a) The budget constraint can be written as: C = wL + V, where C is consumption, w is the real wage, L is leisure, and V is non-labor market income.

(b) With ẞ = 1/2, V = 100, and w = 200, John's optimal supply of labor cannot be determined without information about his preferences for leisure and consumption. The utility function only represents his preferences, but we need additional information to determine the specific amount of labor he would choose to supply.

(c) John's total income is the sum of his labor income and non-labor market income: Total income = Labor income + Non-labor income = wL + V. Without knowing the specific value of L, we cannot calculate the total income.

(d) Similarly, without knowing John's preferences for leisure and consumption, we cannot determine the specific level of consumption he would choose.

(e) In the case where John is subject to a 10% income tax on labor income only, his new optimal supply of labor would depend on the tax rate's impact on his preferences and the trade-off between leisure and consumption. Without further information on his preferences and the specific tax structure, we cannot determine the new optimal supply of labor.

Additional information about John's preferences for leisure and consumption, as well as the specific tax structure, is necessary to calculate his optimal labor supply, total income, consumption, and the impact of the income tax on his labor supply.

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The wavelength of the emitted photon is 5.48 x 10^-17 m, and the mass of the particle is 1.05 x 10^-26 kg.

The energy levels of a particle in a one-dimensional box are given by:

En = (n^2 * h^2)/(8mL^2)

where n is the quantum number, h is Planck's constant, m is the mass of the particle, and L is the length of the box.

We are given En = 51.5 MeV and En+1 = 74.2 MeV, and L = 10 fm.

Using En, we can find the mass of the particle:

m = (n^2 * h^2)/(8L^2 * En)

m = (5^2 * (6.626 x 10^-34 J s)^2) / (8 * (10 x 10^-15 m)^2 * (51.5 x 10^6 eV) * (1.602 x 10^-19 J/eV))

m = 1.05 x 10^-26 kg

Now, we can find the wavelength of the photon emitted in the n+1 to n transition using the formula:

ΔE = Efinal - Einitial = hc/λ

where ΔE is the energy difference between the two levels, h is Planck's constant, c is the speed of light, and λ is the wavelength of the emitted photon.

ΔE = En+1 - En = 74.2 MeV - 51.5 MeV = 22.7 MeV

Converting MeV to joules:

ΔE = 22.7 MeV x (1.602 x 10^-13 J/MeV) = 3.63 x 10^-12 J

Plugging in the values, we get:

λ = hc/ΔE

λ = (6.626 x 10^-34 J s) * (3.00 x 10^8 m/s) / (3.63 x 10^-12 J)

λ = 5.48 x 10^-17 m

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99.3°F is equivalent to 37.4°C

A temperature unit developed from the SI (International System of Units) is Celsius (symbol: °C).

Prior to the adoption of the metric system, Fahrenheit (symbol: °F) was a commonly used measurement of temperature.

To convert Fahrenheit (°F) to Celsius (°C) we have to first subtract 32 from Fahrenheit and then multiply it by .5556 or 5/9.

We have to convert 99.3 degrees Fahrenheit (°F) to Celsius (°C),

We can use the following formula:

°C = (°F - 32) x 5/9

As per the given information,

°F = 99.3

Substituting the value 99.3 for °F, we get:

°C = (99.3 - 32) x 5/9

= 67.3 x 5/9

= 37.4

Therefore, 99.3°F is equivalent to 37.4°C.

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