Which of the assumptions of the kinetic-molecular theory best explains the observation that a balloon collapses when exposed to liquid nitrogen (which is much colder than a cold winter day)?
A
Gas molecules move at random with no attractive forces between them.
B
The velocity of gas molecules is proportional to their kelvin temperature.
C
The amount of space occupied by a gas is much greater than the space occupied by the actual gas molecules.
D
Collisions with the walls of the container or with other molecules are elastic.

The changing of seasons is due to the Earth's orbit around the sun and its tilted axis. This tilt causes variations in sunlight intensity and daylight hours, resulting in the different seasons experienced in different hemispheres.

Seasons change as the Earth orbits around the sun on its tilted axis. When it is summer in the northern hemisphere, it is winter in the southern hemisphere. The tilt of the Earth's axis causes different parts of the planet to receive varying amounts of sunlight throughout the year.

During the summer in the hemisphere tilted towards the sun, the sunlight is more concentrated, resulting in warmer weather. The longer days also contribute to the warm weather. This is because the tilted axis allows the sun's rays to hit the ground at a more direct angle, leading to more intense heat and longer daylight hours.

The longest day of the year, known as the summer solstice, occurs when the hemisphere tilted towards the sun is at its maximum exposure. This day has the most light and is characterized by the shortest shadow cast by an object at noon. It usually falls around June 21st in the northern hemisphere and December 21st in the southern hemisphere.

On the other hand, the shortest day of the year, known as the winter solstice, occurs when the hemisphere tilted away from the sun is at its maximum exposure. This day has the least light and is characterized by the longest shadow cast by an object at noon. It usually falls around December 21st in the northern hemisphere and June 21st in the southern hemisphere.

In conclusion, the changing of seasons is due to the Earth's orbit around the sun and its tilted axis. This tilt causes variations in sunlight intensity and daylight hours, resulting in the different seasons experienced in different hemispheres.

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Answer:

0.3

Explanation:

V = I R

1.5= I (50)

I = 1.5/50

I = 0.3 J

If a student connects four AA batteries (1.5 V each) in series to light up a light bulb. The circuit has a resistance of 50 Ω, then the current flows through the circuit would be 0.12 Amperes.

Resistance is the obstruction of electrons in an electrically conducting material.

The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law.

V = IR

As given in the problem If a student connects four AA batteries (1.5 V each) in series to light up a light bulb. The circuit has a resistance of 50 Ω.

V = IR

6 = 50 × I

I = 0.12 ampere

Thus, the current flowing through the circuit would be 0.12 ampere.

link given below ;

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we can equate the two quantities of heat to find c: m_water * c_water * ΔT = m_material * c * ΔT, c = (m_water * c_water * ΔT) / (m_material * ΔT)

the above expression yields c = 0.20 kcal/kg * C°.

The formula for calculating the specific heat (c) of a material is:

ΔQ = m * c * ΔT

c = ΔQ / (m * ΔT)

ΔT = 100°C - 40°C = 60°C

m_water = 100 gΔQ = m_water * c_water * ΔT = 100 g * 1.00 kcal/kg * ΔT

m_material = 50 g

ΔT = 40°C - 0°C = 40°C

ΔQ = m_material * c * ΔT

So, we can equate the two quantities of heat to find c:

m_water * c_water * ΔT = m_material * c * ΔT

c = (m_water * c_water * ΔT) / (m_material * ΔT)

the above expression yields  temperature c = 0.20 kcal/kg * C°.

The first container's mass and temperature are multiplied together, and the result is added to the second container's mass and temperature to determine the mixture's water temperature. Finally, divide that outcome by the combined water masses in each container.

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Answer:

True

Explanation:

true, batted balls that first contact the field between home plate and first or third base are considered fair if they subsequently bounce over or directly contact either base, or otherwise pass either base while in fair territory. that's what the mlb glossary says, at least.

Answer:

C. Photosynthesis

Explanation:

Photosynthesis is a process by which plants and photosynthetic bacteria obtain their food in presence of sunlight from water and carbon dioxide. They produce glucose as the food and oxygen is emitted as the byproduct. The equation for photosynthesis is - 6H2O+6CO2 → C6H12O6 + 6O2

Thus, the correct answer is 'C.Photosynthesis.'

The force of friction acting on him is 122 N. The correct answer is option C

Friction is a force that opposes the motion of a static or a moving object.

Given that Barry slides across an icy pond. The coefficient of kinetic friction between his shoes and the ice is 0.15. If his mass is 83 kg

The given parameters are;

The normal reaction N on the body = mg

N = 83 x 9.8

N = 813.4 N

The Frictional force formula is  \(F_{r}\) = μN

\(F_{r}\) = 0.15 x 813.4

\(F_{r}\) = 122.01 N

Therefore, the force of friction acting on him is 122 N approximately.

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Answer:

a) 361.7 Hz

b) 318.1 Hz

c) 29.3 m/s

Explanation:

a) Speed of sound in 20 degrees celcius is 343 m/s.

Use v=wavelength*frequency to find wavelength.

343=wavelength*340

wavelegth=1.009 meters

Relative speed of waves to observer A = 343+22 = 365 m/s

Plug it back in.

365=1.009*F

F=361.7 Hz

b) Relative speed of waves to observer B = 343-22 = 321 m/s

Plug it back in.

321=1.009*F

F=318.1 Hz

c) STATIONARY CAR, so 369Hz=v/1.009. v=372.3, 372.3-343=29.3m/s!

It allows people to access all knowledge and is applied to solve mathematical issues. The ability to communicate with people worldwide has improved because of science and technology. Thus, option B is correct.

Due to the fact that business transactions and other activities are conducted via computers, it is also significant in this area.

Using scientific knowledge for a particular aim is known as an application of science. Any alteration to the natural world that satisfies human needs or desires is known as technology. Engineering is a methodical design process with the aim of satisfying human needs or desires.

Therefore, technology, the application of science to help people.

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Based on the diagram, the capacitors are connected in series. In a series connection, the same charge flows through each capacitor. Therefore, the relation of the charges q1, q2, and q3 can be determined as follows:

q1 = q2 = q3

In a series connection, the charges on the capacitors are equal.

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26).

The complete pattern of a pendulum is ...

-- out to one side

-- back to the center

-- out to the OTHER side

-- back to the center.

So, on the graph, the complete period is one up-loop and one down-loop.

That's 6 seconds. (b)

27).

This question is just asking for the frequency, without using the word.

Frequency is always (1/period).  That's 1/6 of a second. (a)

(This kinda makes sense.  If you want to do something in 6 seconds, you need to do 1/6 of it every second. Right ?)

Answer:

Requirements to become an Osteologist

Explanation:

After completing the bachelor's degree, students should begin working towards a master's degree or Ph. D specializing in forensic anthropology. Forensic anthropology is closely related to osteology and it will help in the forensic work.

Answer:

the moon has different gravitational force.

Answer:

Our weight on moon is less than it would be on Earth due to a difference of the strength of gravity on the moon. The moon's gravitation force is determined by the mass and the size of the moon. ... This means that if you went to the moon you would weigh less, even though your mass stays the same!

Explanation:

Please mark brainliest

Answer:

Short term memory

Explanation:

la característica de los elementos

To determine the pressure in the artery, we can use the hydrostatic pressure equation, which states that the pressure at a certain height within a fluid is given by:

P = P₀ + ρgh

Where:

P is the pressure at the desired height,

P₀ is the initial pressure (in this case, the blood pressure in the heart),

ρ is the density of the fluid (in this case, the density of blood),

g is the acceleration due to gravity (approximately 9.8 m/s²),

h is the height difference between the two locations (in this case, the height difference between the heart and the artery).

Given:

P₀ (heart blood pressure) = 1.90 × 10^4 Pa,

h (height difference) = 0.36 m,

ρ (blood density) = 1060 kg/m³,

g (acceleration due to gravity) = 9.8 m/s².

Let's calculate the pressure in the artery using the provided values:

P = P₀ + ρgh

P = 1.90 × 10^4 Pa + (1060 kg/m³) × (9.8 m/s²) × (0.36 m)

Calculating the expression inside the parentheses:

(1060 kg/m³) × (9.8 m/s²) × (0.36 m) = 3772.32 Pa

Substituting this value back into the equation:

P = 1.90 × 10^4 Pa + 3772.32 Pa

P ≈ 2.28 × 10^4 Pa

Therefore, the pressure in the artery is approximately 2.28 × 10^4 Pa.

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You're standing on top of a building and throw a hammer straight down with an initial velocity of -11 m/s. it takes 4 seconds for the hammer to hit the ground. Must be standing 122.4 high off the ground you threw the hammer  

given

initial velocity = -11 m/s

time = 4 seconds

final velocity = 0

acceleration due to gravity = 9.8 \(m/s^{2}\)

Using kinematics equation

s = u*t + 1/2 * g * \(t^{2}\)

s = - u*t + 1/2 * (-g) * \(t^{2}\)

s = -11 * 4 - 1/2 * 9.8 * 16

s = - 122.4 m

Must be standing 122.4 high off the ground you threw the hammer  

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Explanation:

Answer:

Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge.

Explanation:

To pull the tanker 0.630 km total work to be done is  1.871 × 10⁹ 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.

Resultant force acting on the tugboat = √2 × 2.10 × 10⁶ N.

To pull the tanker 0.630 km, that is, 630 m, work done = force × displacement

= √2 × 2.10 × 10⁶ N × 630 m

= 1871004543.01 Joule.

= 1.871 × 10⁹ Joule.

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The starting system permits the driver to turn the ignition switch to activate an electric motor, solenoid switch, wiring, and battery.

In vehicles, the starting system is a fundamental part for the operation of the electrical system, its main function is to start the vehicle by providing it with the necessary electrical current through the ignition switch in which the key is inserted and must be turned to the on position.

In physics the electric current is the magnitude that expresses the amount of electric charge or electric current in coulomb (c) that passes through an electrical conductor in a given time in seconds (s). Its unit of measurement in the international system is the Ampere (A).

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A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil up and down. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced upwards and downwards. In this case, the particles of the medium move perpendicular to the direction that the pulse moves. This type of wave is a transverse wave. Transverse waves are always characterized by particle motion being perpendicular to wave motion.

A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil left and right. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced leftwards and rightwards. In this case, the particles of the medium move parallel to the direction that the pulse moves. This type of wave is a longitudinal wave. Longitudinal waves are always characterized by particle motion being parallel to wave motion.

Answer:

160J OR 140J

Explanation:

Depends on teacher which formula your teacher uses.

U=Q+W OR U=Q-W

Method 1:

U=150+10J=160

U=150-10=140J

Answer:

4x + 3

Explanation:

The number of people who can go to the amusement park is 8.

The mathematical expressions with inequalities are those with unequal sides on both sides. Unlike equations, we compare two values when we work with inequality.

Here,

The total amount they have, z = $325

Amount of parking charge, x = $11

Amount for ticket cost, y = $39.25

Let the number of people who can go to the amusement park be p.

So, the expression for the inequality can be written as,

x + yp = z

Applying the values of x, y and z,

11 + 39.25p ≤ 325

39.25p ≤ 325 - 11

39.25p ≤ 314

Therefore, the number of people who can go to the amusement park,

p ≤ 314/39.25

p ≤ 8

Hence,

The number of people who can go to the amusement park is 8.

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Answer:

34.55m/s

Explanation:

Now from Newton's law of motion;

V= U+ a×t

V- final velocity

U- initial velocity = 0m/s

a- acceleration

t- time

Note that a = g/cos53.2°

Now g is acceleration of free fall due to gravity

This is a vertical acceleration since the course of motion is along a plane inclined at 53.2° to the height of the pool.

Also from trigonometry identity

cos 53.2°= vertical component a/ acceleration ( cos a = adjacent/hypothenus)

If we assume g = 9.8m/S2 { a generally given value}

Substituting t = 3.45s as the time of consideration, we have;

V = 0 + (9.8/cos53.2°)×3.45

= -34.55m/s

Note the -ve sign is just telling us this velocity is causing the object to move down.

Hence V = 34.55m/s

Answer:

27.07 m/s

Explanation:

this is the right answer

Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.

A nonsense mutation occurs in the DNA when a sequence changes itself and gives rise to a stop codon rather than a codon specifying an amino acid. The presence of the new stop codon results in the production of a shortened protein that is non-functional.

A nonsense mutation is also known as base substitution which results in a stop codon in such a position from where there was not one before, which causes the premature termination of protein synthesis and, more than likely, a complete loss of function in the finished protein.

So we can conclude that a nonsense mutation always causes a loss of amino acids.

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Answer:

I = 0.2 A

Explanation:

Lamp is rated at 300 mA

I_lamp = 0.3 A

Voltage is; V = 3V

Thus; Resistance is given by;

R = V/I

R = 3/0.3

R = 10 ohms

Now, since the ammeter of 5 ohms is connected in series with the lamp. Thus equivalent resistance;

R_eq = 10 + 5

R_eq = 15 ohms

Ammeter current will be;

I = V/R_eq

I = 3/15

I = 0.2 A

Answer:

please give me brainlist and follow

Explanation:

Yes if the body is travelling with uniform speed in a circular track its speed remains the same but the velocity is non-uniform as the direction of the body is changing every time.