When energy is removed from a gas,____ occurs.

A. Sublimation
B. Melting
C. Evaporation
D. Condensation

Answer:

The magnitude of each charge is 1.49*10⁻⁵ C.

Explanation:

The electromagnetic force is the interaction that occurs between bodies that have an electric charge.

Coulomb's law is used to calculate the electric force acting between two charges at rest.

This law says that the electrostatic force depends on the distance "r" between the electrons and the charge of both. That is, the magnitude of each of the electric forces with which two point charges interact at rest is directly proportional to the product of the magnitude of both charges and inversely proportional to the square of the distance that separates them. The force is of repulsion if the charges are of the same sign, and of attraction if they are of the opposite sign.

\(F=k*\frac{q1*q2}{r^{2} }\)

This law is represented as follows:

In this case:

Replacing:

\(8 N=9*10^{9} \frac{N*m^{2} }{C^{2} }*\frac{q*q}{(0.50m)^{2} }\)

Solving:

\(8 N=9*10^{9} \frac{N*m^{2} }{C^{2} }*\frac{q^{2} }{0.25m^{2} }\)

\(8 N=3.6*10^{10} \frac{N }{C^{2} }*q^{2}\)

\(\frac{8 N}{3.6*10^{10} \frac{N }{C^{2} }} =q^{2}\)

\(\sqrt{\frac{8 N}{3.6*10^{10} \frac{N }{C^{2} }}} =q\)

1.49*10⁻⁵ C=q

The magnitude of each charge is 1.49*10⁻⁵ C.

Answer:

60 seconds

Explanation:

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Honestly, I prefer gloves made out of pure nickel it helps keep heat inside your gloves.

Answer:

No

Explanation:

Wool gloves made of leather keep you from being cold

Answer: A.

Explanation:

took the test just now

A battery supplies electrical energy to a circuit Chemical reactions in a battery cause positively and negatively charged particles to separate and become concentrated at the battery terminals. The correct option is A.

A chemical reaction is a process in which one or more substances, also known as reactants are converted to one or more different substances, known as products. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

Chemical reactions in a battery cause positively and negatively charged particles to separate and become concentrated at the battery terminals resulting in the transformation into electrical energy therefore the correct option is A.

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Answer:

1500

Explanation:

The work was done by the force on the block of 2 kg with an acceleration gravity of  9.81 \(m/s^2\) and at an angle of \(29^o\) 42.83 J.

When an object is moved over a distance by an external force, at least some of that force must be applied in the direction of the displacement. This is known as work in physics. Work may be estimated if the force acting along the path is constant by multiplying the length of the path by the component of the force acting along the path.

To express this formally, the work W is equal to the force f times the length d, or W = fd. The work is W = fd cos if the force is applied at an angle to the displacement.

Given:

The mass, m = 2 kg,

The acceleration, g = 9.81 \(m/s^2\),

θ = angle between block and surface kinetic friction = μ

Calculate the work done by the formula given below,

\(W_{fy}\) = F sinθ

\(W_{fy}\) =  (\(mgsin\)θ)/ (sinθ -  μ * cosθ)

Substitute the values

\(W_{fy}\)  = \((2*9.81 sin29^{o} )/sin29^o - 0.30cos29^o\)

\(W_{fy}\)  = 42.83 J

Therefore, the work done by the force on the block of 2 kg with an acceleration gravity of  9.81 \(m/s^2\), and at an angle of \(29^o\) is 42.83 J.

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Answer:

A car engine has more power than a horse because a car engine does the same amount of work in time. Yasmin and Raj each had 10 boxes of equal weight to stack next to each other on the same shelf, at the same height and in the same arrangement. Yasmin completed the task in 2 minutes, while Raj took 3 minutes to stack his boxes. Raj applied less power than Yasmin because his stacking took more time to do the same amount of work.

Explanation:

A car engine has more power than a horse because a car engine does the same amount of work in less time. Raj applied less power than Yasmin because his stacking took more time to do the same amount of work.

The quantity of energy moved or converted per unit of time is known as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in ancient writings. A scalar quantity is power.

Energy divided by time represents the dimension of power. The watt (W), which equates to one joule per second, is the unit of power in the International System of Units (SI).

Another popular unit of measurement is horsepower (hp), which is equivalent to a horse's power; one mechanical horsepower is equal to around 745.7 watts.

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Answer:

if you like it please do appreciate

To calculate the approximate thermal energy in kilojoules per mole (kJ/mol) of molecules at a given temperature, you can use the Boltzmann constant (k) and the ideal gas law.

The Boltzmann constant (k) is approximately equal to 8.314 J/(mol·K). To convert this to kilojoules per mole, we divide by 1000:

k = 8.314 J/(mol·K) = 0.008314 kJ/(mol·K)

Now, we need to convert the temperature to Kelvin (K) since the Boltzmann constant is defined in Kelvin. To convert from Celsius to Kelvin, we add 273.15 to the temperature:

T(K) = 75°C + 273.15 = 348.15 K

Finally, we can calculate the thermal energy using the formula:

Thermal energy = k * T

Thermal energy = 0.008314 kJ/(mol·K) * 348.15 K

Thermal energy ≈ 2.894 kJ/mol

Therefore, at 75°C, the approximate thermal energy of molecules is approximately 2.894 kilojoules per mole (kJ/mol).

The heat capacity of one mole of water is approximately 75.29/1000 = 0.07529 kj/mol. This value represents the approximate thermal energy in kj/mol of water molecules at 75 ° C.

Thermal energy refers to the energy present in a system that arises from the random movements of its atoms and molecules. When a body has a temperature of 75 ° C, it has a thermal energy that depends on the type of molecules in it and their specific heat capacity.

In this context, we will consider the thermal energy in kj/mol of molecules at 75 ° C.Let's use water as an example to calculate the approximate thermal energy in kj/mol of molecules at 75 ° C. The specific heat capacity of water is 4.18 J/g °C, and the molar mass of water is 18.01528 g/mol. Therefore, the thermal energy in kj/mol of water molecules at 75 ° C can be calculated as follows:ΔH = mcΔt, whereΔH = thermal energy,m = mass of the sample,c = specific heat capacity of the sample,Δt = change in temperature

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Answer:

I think it is A

Explanation:

Using Newtons law

\(\\ \sf\longmapsto Force=Mass\times Acceleration\)

\(\\ \sf\longmapsto Mass=\dfrac{Force}{Acceleration}\)

\(\\ \sf\longmapsto Mass=\dfrac{340}{3.8}\)

\(\\ \sf\longmapsto Mass=89.4kg\)

Answer:

A. 1.0x10^6 J

B. 53 W

C. 7.1x10^-2

D. 330 W

Explanation:

A) work done = mgh

so 71*9.8*1500=1.0x10^6 J

B) power = Work done/time

So P=1.0x10^6/19800 sec

P= 53 W

​

C) 1 HP =735 W

503 W= 7.1x10^-2 HP

D) efficiency =(output/ input) *100

so 16= (53/input) *100

input= 7.1x10^-2

That depends on what word you skipped at the beginning of the question.

If it's supposed to be "Potential" energy, then the statement is false.**

If It's supposed to be "Kinetic" energy, then the statement is true.

** It's also false if the missing word is "Chemical", "Mechanical", "Thermal", "Nuclear", "Electrical", "Electromagnetic", or "Nervous".)

Answer:

If the length is doubled, the period will increase by a factor of √2 .

Explanation:

For Simple Pendulum

T = 2π√(L/g) -----------------(1)

Where T is time period, L is length and g is acceleration due to gravity

Now,

If we double the length,

T = 2π√2L/g

T = √2(2π√(L/g)

From (1), We get

T = √2(T)

So,

If the length is doubled, the period will increase by a factor of √2 .

Answer:

30

Explanation:

Answer:

20kg

Explanation:

ΣF = ma

500N = 25m

m = 20kg

The substance with meting point of 240 °C and boiling point of 300  °C is hard plastics. Any volume of alcohol has an 78 °C. Candle wax have higher melting point than water.

Boiling point of a substance is the temperature at which the substance is converts from liquid state to vapor state at which the the vapor pressure equal to the atmospheric pressure.

It is clear from the table that, substance with meting point of 240 °C and boiling point of 300  °C is hard plastics. Boiling point of a substance does not change with change in volume.

Hence, any volume of alcohol has an 78 °C. Candle wax have higher melting point than water.

Oxygen and nitrogen can be differentiated based on their densities and mass.

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Answer:

Velocity

Explanation:

hope this helps

Answer:

Speed in a given direction is called velocity.

Explanation:

Answer:

Explanation:

ave speed is always (frequency) x (wavelength)

Speed  =  (450 /sec) x (0.52 m)

=      234 m/sec .

The possible direction of movement of an object accounts for the motion.

The cup shape of the socket allows for nearly circular motion. Hence, option (D) is correct.

What is a Motion?

When an object tends to move from one point to another in a given interval of time, then the object is said to be in motion.

Ball-and-socket joints possess a rounded, ball-like end of one bone fitting into a cup-like socket of another bone. This system allows the greatest range of circular motion, as all movement types are possible in all directions.

Thus, we can conclude that the cup shape of the socket allows for nearly circular motion. Hence, option (D) is correct.

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The type of electrical signal that exhibits an all-or-none response is action potential. So, option A is accurate.

An action potential is a rapid and brief reversal of the electrical potential across a cell membrane, which occurs in excitable cells such as neurons and muscle cells. It is characterized by an all-or-none response, meaning that once the threshold stimulus is reached, the action potential is generated at full strength regardless of the strength of the initial stimulus.

In an all-or-none response, the action potential either occurs fully or does not occur at all. If the stimulus reaches the threshold level, the cell membrane depolarizes and generates an action potential that propagates along the length of the neuron or muscle fiber. However, if the stimulus does not reach the threshold, no action potential is generated.

This property of all-or-none response ensures the consistency and reliability of signal transmission in the nervous system. It allows for the generation of precise and rapid electrical signals that can propagate over long distances without losing their strength or information content.

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Answer:

F = q V X B

Using the right hand rule (right hand screw) turn V into B to get direction of force which in this case is down

If V is east and F is down then one can see that B must be directed towards  the south - turn V into B (south) and F will be directed downwards.

Answer:

\(f=5.76\times 10^{14}\ Hz\)

Explanation:

We need to find the frequency of green light having wavelength o\(5.2\times 10^{-7}\ m\). It can be calculated as follows :

\(c=f\lambda\\\\f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{5.2\times 10^{-7}}\\\\f=5.76\times 10^{14}\ Hz\)

So, the required frequency of green light is equal to \(5.76\times 10^{14}\ Hz\).

Unrequited love is most likely to be experienced by people with the anxious/ambivalent attachment style according to attachment theory.

Attachment theory is a psychological model that explains the dynamics of long-term relationships between humans. It is an important concept in the field of social psychology, personality psychology, and developmental psychology.The attachment style describes the relationship style and pattern between an individual and their romantic partner. There are mainly three attachment styles: avoidant, secure, and anxious/ambivalent. People with anxious/ambivalent attachment style have a high degree of emotional dependence, possessiveness, and a strong desire for closeness to their partner.

However, their insecurity and fear of rejection or abandonment often lead them to act in ways that push their partner away. This may result in unrequited love or a one-sided relationship. People with this attachment style often experience more negative emotions such as anxiety, jealousy, and depression due to their sensitivity to rejection. Hence, unrequited love is most likely to be experienced by people with the anxious/ambivalent attachment style.

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Given:

There is a closed path for the flow of current.

Answer and explanation:

A correct option is an option (A). Since the path is closed, the current will flow through the circuit.

An option (B) is incorrect because the charge does not accumulate in a closed path.

Option (C) is also incorrect because the path is closed, and the circuit cannot be open.

Option (D) is also an incorrect option because there is always a resistance provided by the metal wire.

At the time of care, giving patients accurate, complete, and current information. facilitating quick access to patient records to improve coordination and effectiveness of service.

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Answer: Globular clusters with stars more than 13 billion years old contain heavy elements.

1. The wavelength of the wave is 0.4 m

2. The frequency is 10 Hertz

3. The wavelength will be half the original wavelength.

4. The frequency of the wave is 0.05 Hertz

The wavelength of the wave can be obtain as follow:

Velocity (v) = wavelength (λ) × frequency (f)

800 = wavelength × 2000

Divide both sides by 2000

Wavelength = 800 / 2000

Wavelength = 0.4 m

The frequency of the wave can be obtain as illustrated below:

Velocity (v) = wavelength (λ) × frequency (f)

10 = 1 × frequency

Frequency = 10 Hertz

The wavelength of the wave can be obtain as shown below:

v = fλ

Since v is constant, we have

f₁λ₁ = f₂λ₂

Thus, we have:

f × λ = 2f × λ₂

Divide both sides by 2f

λ₂ = fλ / 2f

λ₂ = λ / 2

Thus, we can conclude that the wavelength will be half the original wavelength

The frequency of the wave can be obtain as shown below:

Frequency = Number of wave / time taken

Frequency = 6 / 120

Frequency = 0.05 Hertz

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Answer:

1. The wavelength of the wave is 0.4 m

2. The frequency is 10 Hertz

3. The wavelength will be half the original wavelength.

4. The frequency of the wave is 0.05 Hertz

1. How do i determine the wavelength?

The wavelength of the wave can be obtain as follow:

Frequency of wave (f) = 2.0 KHz = 2.0 × 1000 = 200- Hz

Speed of wave (c) of = 800 m/s

Wavelength (λ) = ?

Velocity (v) = wavelength (λ) × frequency (f)

800 = wavelength × 2000

Divide both sides by 2000

Wavelength = 800 / 2000

Wavelength = 0.4 m

2. How do i determine the frequency?

The frequency of the wave can be obtain as illustrated below:

Speed of wave (v) = 10 m/s

Wavelength of wave (λ) = 1 m

Frequency of wave (f) =?

Velocity (v) = wavelength (λ) × frequency (f)

10 = 1 × frequency

Frequency = 10 Hertz

3. How do i determine the wavelength?

The wavelength of the wave can be obtain as shown below:

Initial frequency (f₁) = f

Initial wavelength  (λ₁) = λ

Speed = Constant

New frequency (f₂) = 2f

New wavelength (λ₂) =?

v = fλ

Since v is constant, we have

f₁λ₁ = f₂λ₂

Thus, we have:

f × λ = 2f × λ₂

Divide both sides by 2f

λ₂ = fλ / 2f

λ₂ = λ / 2

Thus, we can conclude that the wavelength will be half the original wavelength

4. How do i determine the frequency?

The frequency of the wave can be obtain as shown below:

Time taken = 2 minutes = 2 × 60 = 120 seconds

Number of wave = 6 complete waves

Frequency =?

Frequency = Number of wave / time taken

Frequency = 6 / 120

Frequency = 0.05 Hertz

Explanation:

Newton's investigations of gravity explain the truth that Jupiter has more moons than Earth.

The fact that Jupiter has more moons than Earth was first discovered by Galileo Galilei in 1610, and it was later confirmed by Newton. In addition to having more moons, it is also thought that Jupiter may be home to some of the most powerful magnetic fields in the solar system.

Every particle in the cosmos attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers, according to Newton's law of universal gravitation.

Thus, the equation for universal gravity has the following structure:

\({\displaystyle F=G{\frac {m_{1}m_{2}}{r^{2}}}}{\displaystyle\)

where r is the distance between the centers of the two objects' masses, m1 and m2 are their respective masses, G is the gravitational constant, and F is the gravitational force acting between them.

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The correct answer is; Gravity acts on all objects in the universe.

The answer above is incorrect…

If a star is moved twice as far away, it would appear one-fourth as bright.

The apparent brightness of a star depends on its distance and the inverse square law. According to the inverse square law, the brightness of an object decreases as the square of its distance increases. If a star is moved twice as far away, its distance from the observer would be doubled.

Applying the inverse square law, the brightness would decrease by a factor of four (2^2). This means the star would appear one-fourth as bright as before. The amount of light reaching the observer decreases as the distance increases, leading to a decrease in apparent brightness. Therefore, moving a star twice as far away reduces its apparent brightness to one-fourth of its original value.

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