Which measurable property of water allows water droplets to have a rounded shape?

Answer:

hello

Explanation:

Answer:

Wood helps in home insulating because logs have both a proper structure and insulation. Since the log has so much heat storage, its huge mass will have a lot more thermal energy than other materials for insulating.

A pulsar is a neutron star that sweeps a beam of radiation past the Earth each time it rotates. So, option D is correct.

A pulsar is a highly magnetized, rotating neutron star that emits beams of electromagnetic radiation. It is formed from the remnants of a massive star that has undergone a supernova explosion.

As the neutron star spins rapidly, its intense magnetic field causes beams of radiation to be emitted from its magnetic poles. These beams are observed as regular pulses of radiation as the pulsar rotates.

Pulsars are characterized by their precise and regular periods of pulsation, which can range from milliseconds to several seconds.

The emission of radiation occurs along the magnetic axis of the neutron star, and if this axis is not aligned with the rotation axis, the beams of radiation sweep across space like a lighthouse, leading to periodic pulses of radiation detected on Earth.

The discovery of pulsars in 1967 by Jocelyn Bell Burnell and Antony Hewish provided evidence for the existence of neutron stars and opened up new avenues for studying stellar remnants and extreme astrophysical phenomena.

Pulsars are important objects in astrophysics and continue to be studied for their contributions to our understanding of stellar evolution, gravity, and the behavior of matter under extreme conditions.

So, option D is correct.

Learn more about pulsar:

https://brainly.com/question/29523457

#SPJ11

Answer:

In physical changes no new materials are formed and the particles do not change apart from gaining or losing energy. ... Particles stay the same unless there is a chemical change whether the matter is solid, liquid or gas. Only their arrangement, energy and movement changes.

Explanation:

this is true because if you think about it if you put a pill in a glass of water it dissolves its like particles

1. Reducing Carbon Entering: Planting more trees at the location is an effective way to reduce the amount of carbon at this location.

Carbon is an element found in abundance in the Earth's atmosphere and is one of the most abundant elements in the universe. Carbon is a key component of all living organisms and serves as the backbone of life on Earth. Carbon exists in several different forms, including coal, oil, natural gas, and diamonds, and can be found in many other materials, such as plastics, paper, and fabrics.

Trees absorb carbon dioxide from the atmosphere and use it to produce oxygen through photosynthesis. This process helps to reduce the amount of carbon entering the location.
2. Increasing Carbon Exiting: Installing solar panels at the location is an effective way to increase the amount of carbon exiting the location. Solar panels convert solar energy into electricity, releasing carbon dioxide into the atmosphere during the process. This helps to reduce the amount of carbon at the location by releasing it back into the atmosphere.

To learn more about Carbon
https://brainly.com/question/29112174
#SPJ1

Answer:

To solve this problem, we can use the formula for the potential energy stored in a stretched spring or rubber band: U = (1/2) k x^2

where U is the potential energy, k is the spring constant, and x is the amount of stretch.

We can rearrange this formula to solve for k: k = 2 U / x^2

The velocity of the pebble can be found using conservation of energy:

(1/2) m v^2 = U

where m is the mass of the pebble and v is its velocity.

Rearranging this formula, we get: v = sqrt(2 U / m)

We can combine these formulas to solve for the length of the rubber band:

k = (4 U) / (0.25 L^2)

v = sqrt((8 U) / (0.006))

where L is the original length of the rubber band.

Since the width and thickness of the rubber band are given, we can calculate its cross-sectional area:

A = (9 mm) x (1.55 mm) = 13.95 mm^2 = 1.395 x 10^-5 m^2

Using the Young's modulus given in the problem, we can calculate the spring constant: k = (A / L) x (Y / 4)

where Y is the Young's modulus.

The formula for k above, we get: (4 A Y / L^3) x (U / 0.25) = 0.006 v^2

Solving for L, we get: L = (4 A Y U / 0.006 v^2)^1/3

Substituting the given values and solving, we get: L = 34.86 cm

Therefore, the length of the rubber band should be approximately 34.86 cm to achieve the desired velocity of the pebble

The drawing of a parallel circuit shows that the points where one could switch off lights are:

Parallel circuits are circuits in which the components are connected in parallel to each other. This means that there are multiple paths for current to flow through the circuit. The voltage across each component in a parallel circuit is the same, but the current through each component can be different.

When the switch at point C is switched off, only a single bulb would be switched off which is the last one. At point B, the second and last bulbs would go off but at point A, all lights would go off as the power is cut below it reaches the bulbs.

Find out more on switch points at https://brainly.com/question/15828585

#SPJ1

Answer:

40000N

Explanation:

Given parameters:

Mass of the car = 1000kg

Velocity of the car  = 20m/s

Time taken  = 0.5s

Unknown:

Force on the car  = ?

Solution:

According to Newtons second law of motion:

 F = m a

F is the force

m is the mass

 a is the acceleration

 F = m \(\frac{change in velocity}{time}\)  

 Change in velocity  =  0 - 20  = -20m/s

 F = 1000 x \(\frac{-20}{0.5}\)  = -40000N

The force on the car is 40000N

Answer is in the photo. I can only upload it to a file hosting service. link below!

tinyurl.com/wpazsebu

Answer:

0 Kelvin is equal to -459.67 Fahrenheit which is also absolute zero. Along with that at zero Kelvin or minus 273 degrees Celsius or minus 459.67 Fahrenheit the particles stop moving and all disorder disappears. Thus, nothing can be colder than absolute zero on the Kelvin scale. Luckily 0 Kelvin is believed to be impossible to reach with our current technology.

-BlueBoy

According to the law of conservation of mass, a chemical reaction cannot create or destroy matter.

According to the law of conservation of mass, a chemical reaction does not result in the creation or destruction of new matter. For instance, when wood burns, the combined mass of the soot, ashes, and gases is equal to the combined mass of the initial reaction between the charcoal and the oxygen. As a result, the reactant's mass and the product's mass are equal.

This law states that no matter what physical or chemical change occurs, the total mass of the products and reactants remain equal. The "law of indestructibility of matter" has been another name for the law of conservation of mass.

To know more about matter :

https://brainly.com/question/28487167

#SPJ9

The nuclear fusion reaction, which occurs in the star's core, is responsible for this. In stars that are more massive than the Sun, heavier elements such as iron and nickel are formed and ejected into the interstellar medium through supernova explosions. However, in the case of a 1-M star, the fusion process only produces helium, carbon, and nitrogen.

The answer is Hydrogen. Explanation: In terms of chemical elements, a single 1-M star will eventually eject significant amounts of hydrogen into the interstellar medium. Once the helium in the core has been exhausted, the outer layers of the star begin to expand and cool. It becomes a red giant as a result of this process. The star's outer layers eventually expand so far that they are lost, forming a planetary nebula. The core of the star, which is now exposed, emits ultraviolet radiation that ionizes the planetary nebula's gases, causing it to glow brightly. The core is now known as a white dwarf, which gradually cools and dims over time.

Learn more about nuclear fusion  here ;

https://brainly.com/question/14019172

#SPJ11

A single 1-M star will eventually eject significant amounts of hydrogen, iron, nickel, and other chemical elements into the interstellar medium.

A 1-M star, also known as a solar-mass star, goes through several stages of stellar evolution. Initially, it burns hydrogen in its core, producing helium through nuclear fusion. As the star evolves, it undergoes a series of nuclear reactions, leading to the synthesis of heavier elements. During the red giant phase, the star expands and loses its outer layers, which results in the ejection of significant amounts of hydrogen and other light elements into the interstellar medium.

Additionally, during the late stages of a 1-M star's life, it undergoes a supernova explosion, which releases enormous amounts of energy and leads to the synthesis of even heavier elements like iron and nickel. These elements are synthesized through nuclear reactions occurring during the explosive event. The explosion disperses these newly formed elements into space, enriching the interstellar medium with iron, nickel, and other elements.

Therefore, a single 1-M star will indeed eject significant amounts of hydrogen, iron, nickel, and various other chemical elements into the interstellar medium throughout its evolution and, particularly, during the supernova explosion at the end of it.

Learn more about supernova explosion here.

https://brainly.com/question/14018571

#SPJ11

The period of a pendulum is affected by its length, mass, and the acceleration due to gravity (g). From this problem, we have measured the periods of several pendulums of different lengths.

We have to analyze the data by fitting to a power law, y = a L b. Let us begin by recalling the equation for the period of a pendulum:

\(T = 2π (L/g)^1/2\) Here, T is the period of the pendulum L is the length of the pendulum g is the acceleration due to gravity (which is to be determined).

Substituting the power law, y = a L b in the equation above, we get:

\(2π (L/(a/y^b))1/2 = T2π (y^b/a)^1/2 L^1/2 = Tg = 4π² L/aT²y^b\) Hence, the value of the acceleration due to gravity (g) can be inferred from the equation above as:

\(g = 4π² L/aT²y^b\)

To know more about pendulum visit:

https://brainly.com/question/29268528

#SPJ11

Iron ( Fe ) is a micro element that is essential for the formation of haemoglobin.

Hemoglobin has two components-

The velocity to time graph of the robots can be used to calculate the displacement and distance traveled by the robot.

6) The magnitude of the displacement of the robot for the entire time interval shown is (ii) greater in Case B

7) The rank of the distance traveled during the intervals is as follows;

\(\begin{vmatrix}D| &A | &C | &B | &E| &F \\\end{vmatrix}\)

A velocity time graph describes the changes in the motion of a straight moving object

6) The displacement is given by the area under the velocity time graph.

The area is obtained by drawing a vertical line at the tip of the graph of the velocity to time of each of the robots

The area of a triangle = 0.5 × Base length × Height

The time interval in Case A is the same as the time interval in Case B which is taken as t

The time at which the velocity of the robot is 0 in figure (i) is approximately 0.5·t

The initial velocity in Case A = -v

The final velocity = v

The area under the curve in Case A, which gives the displacement is therefore;

Displacement in Case (A) = 0.5 × 0.5·t × (-v) + 0.5 × 0.5·t × (v) = 0

The magnitude of the initial velocity of the robot in Case B is half the magnitude of the final velocity of the robot

Similarly, the time at which the velocity of the robot in Case B is 0 is a third of the total time of motion

The displacement of the robot in Case B is therefore;

Displacement = 0.5 × (1/3)·t × (0.5·v) + 0.5 × (2/3)·t × (-v) = -0.25·v·t

The magnitude of the displacement in Case B = |-0.25·v·t| = 0.25·v·t > 0

The magnitude of the displacement in Case B is > The magnitude of the displacement in Case A

The correct option is therefore (ii) greater in Case B

7) The distance traveled is given by the area bounded by the curve as follows;

A. Shape of region bounded by the graph = Rectangle

Initial velocity = Constant = -1 unit

Time of travel = 5 unit

Area = -1 × 5 = -5 units

B. Shape of graph = Triangle

Initial velocity = 1.5 units

The final velocity = 0

Change in velocity = 1.5 - 0 = 1.5

The time = 5 unit

Area = 0.5 × 5 × 1.5 = 3.75

The distance = 3.75 units

C. Starting velocity = -1.7 units

The final velocity = 0

Change in velocity = -1.7

Time = 5 units

Distance ≈ 0.5 × 5 × -1.7 = -4.25

D. Shape of graph = Rectangle

Initial velocity ≈ 1.7 units (Constant)

Time = 5 units

Distance = 5 × 1.7 = 8.5

E. Shape of graph = Two congruent triangles

Initial velocity = -1 unit

Time it takes to increase to a velocity of 0 = 2.5·t

Final velocity = 1 unit

Time it takes to increase to from a velocity of 0 to a velocity of 1 = 2.5 units

Distance = Sum of the area of the two triangles

Displacement = 0.5 × 2.5 × -1 + 0.5 × 2.5 × 1 = 0

Distance = 0.5 × 2.5 × 1 + 0.5 × 2.5 × 1 = 2.5

F. Shape of area bounded by the graph = Positive triangle

Height of the triangle = 1 unit

Base length of the triangle = 5 units

Area of the triangle = Distance = 0.5 × 5 × 1 = 2.5

The rank of the distance travelled during the intervals is therefore;

D(8.5), A(-5), C(-4.25), B(3.75), E(2.5), F(2.5)

The distance is a measure of the motion of the robot such that the forward and backward motion are added together

Learn more about the velocity time graph here:

https://brainly.com/question/26209293

#SPJ1

Answer:

The atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.

Explanation:

The chemical reaction is the way in which one substance reacts against another. So, a chemical reaction consists of the transformation of some substances into others, that is, the process of arranging atoms and bonds when chemical substances come into contact.

In a chemical reaction, the initial substances are called reactants, while the new substances obtained are called products.

So, the atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.

The tension force of the string is approximately 156.90 N.

The tension force in a string or a wave is a crucial parameter that determines the behavior and characteristics of the wave. In this scenario, we are given the length, mass, frequency, and wavelength of the wave produced by the string. We can use these values to calculate the tension force.

To find the tension force, we can utilize the formula for the speed of a wave on a string, which is given by the equation v = √(T/μ), where v is the wave velocity, T is the tension force, and μ is the linear mass density of the string (mass per unit length).

First, we need to calculate the wave velocity using the given frequency and wavelength. The wave velocity can be determined using the formula v = fλ, where v is the velocity, f is the frequency, and λ is the wavelength.

v = (7.459 Hz) × (1.770 m)

v ≈ 13.210 m/s

Next, we rearrange the equation for the wave velocity to solve for the tension force:

T = μ\(v^2\)

T = (m/ℓ) \(v^2\)

Given that the length of the string (ℓ) is 0.113 m and the mass (m) is 78.465 g (0.078465 kg), we can substitute these values into the equation:

T = (0.078465 kg / 0.113 m) × (13.210 m/s)²

T ≈ 156.90 N

Therefore, the tension force of the string is approximately 156.90 N.

Tension force plays a crucial role in wave propagation, whether in strings, ropes, or other mediums. It determines the speed and behavior of waves, including their frequency and wavelength.

The tension force is directly related to the wave velocity and can be calculated using the formula T = μ\(v^2\), where T represents the tension force, μ is the linear mass density of the string or medium, and v is the wave velocity.

By understanding the relationship between tension, wave velocity, and other wave parameters, we can analyze and predict the characteristics of waves in various systems. The tension force is an essential concept in physics and engineering, providing insights into the dynamics and properties of wave phenomena.

Learn more about tension force

brainly.com/question/31656604

#SPJ11

Answer:

60m

Explanation:

Because it's just math

The dot product is 25, the angle is \(\theta = cos^{-1} \frac{25}{\sqrt{35} \times \sqrt{21}}\), the cross product is 1i + (-6)j + (-7)k, and the area of the parallelogram spanned by vectors A and B is \(\sqrt{86}\).

Given,

A = 5i + 3j + k

B = 4i + j + 2k

i. Dot Product (A · B):

The dot product of two vectors A and B is given by the sum of the products of their corresponding components.

\(A.B = (A_x \times B_x) + (A_y \times B_y) + (A_z \times B_z)\\A.B = (5 \times 4) + (3 \times 1) + (1 \times 2) \\= 20 + 3 + 2 \\= 25\)

ii. Angle between vectors A and B:

The angle between two vectors A and B can be calculated using the dot product and the magnitudes of the vectors.

\(cos\theta = (A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} ((A.B) / (|A| \times |B|))\\A = \sqrt{(5^2 + 3^2 + 1^2)} =\\ \sqrt{35}\\B = \sqrt{(4^2 + 1^2 + 2^2)} \\= \sqrt{21}cos\theta = \frac{(A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} \frac{25}{\sqrt{35} \times \sqrt{21}}}\)

iv. Cross Product (A × B):

The cross product of two vectors A and B is a vector that is perpendicular to both A and B and its magnitude is equal to the area of the parallelogram spanned by A and B.

\(A\times B = (A_y \timesB_z - A_z \timesB_y)i + (A_z \timesB_x - A_x \timesB_z)j + (A_x \times B_y - A_y \times B_x)k\\A\times B = ((3 \times 2) - (1 \times 1))i + ((1 \times 4) - (5 \times 2))j + ((5 \times 1) - (3 \times 4))k\\= 1i + (-6)j + (-7)k\)

Area of the parallelogram spanned by vectors A and B:

The magnitude of the cross product A × B gives us the area of the parallelogram spanned by A and B.

Area = |A × B|

Area of the parallelogram spanned by vectors A and B:

Area = |A × B| =

\(\sqrt{(1^2 + (-6)^2 + (-7)^2}\\\sqrt{1+36+49\\\\\sqrt{86}\)

Learn more about vectors, here:

https://brainly.com/question/24256726

#SPJ4

The sum of the external torques is not zero. Conservation of angular momentum is based on the principle that the total angular momentum of a system is conserved when the sum of the external torques acting on it is zero. Option (1)

In other words, the angular momentum of an isolated system is constant. Angular momentum is a vector quantity that describes the rotational motion of a body or a system of bodies around a fixed axis. It depends on the mass distribution and velocity of the rotating objects. The conservation of angular momentum is a powerful tool in physics and is used to solve problems in a wide range of fields, from mechanics to astrophysics.

Learn more about angular momentum

https://brainly.com/question/29897173

#SPJ4

Full Question: Like linear momentum, conservation of angular momentum is a fundamental principle which can be used to solve physical problems. The angular momentum of a system may remain the same unless (select the best answer)

Answer:

Either A or D

Explanation:

Answer:

c

Explanation:

its c because high winds foRM A HURRICAN AND WARM TO AND ESPECIALY IF IT IS 80 DEGRESES

Answer:

Sodium ions

Explanation:

Please click crown below my answer.

Answer:  Radio waves, Microwaves infrared, optical ultraviolet, X-rays and gamma-rays

The velocity of the eagle is 12.4 m/s

Velocity is the rate of change of displacement.

The S.I unit of velocity is m/s.

To calculate the velocity of the eagle, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the velocity of the eagle is 12.4 m/s.

Learn more about velocity here: https://brainly.com/question/4931057

#SPJ1

Answer:

Cuando viajo en un automóvil lo que se mueve soy yo en realidad, estoy tomando como sistema de referencia el mundo externo al automóvil sin embargo si tomamos como un sistema de referencia algún objeto que se encuentre dentro del automóvil entonces lo que se mueve es lo que me rodea

If the time is doubled to reach the same final velocity, then the acceleration will be half the acceleration before.

The rate of change of an object's velocity with respect to time is defined as acceleration. Vector quantities are accelerations.

Let's assume the final and the initial velocity of the object is v and u, respectively. Also, the time it takes is represented by t. Therefore, the acceleration can be written as,

a₁ = (v-u)/t

Now, if the time is doubled then the acceleration can be written as,

a₂ = (v-u)/2t

    = (1/2) × [(v-u)/t]

    = 0.5 × a₁

a₂ = 0.5a₁

Hence, If the time is doubled to reach the same final velocity, then the acceleration will be half the acceleration before.

Learn more about Acceleration here:

https://brainly.com/question/12550364

#SPJ2

The potential difference that stopped the electron is infinite. The initial kinetic energy of the electron is 62 eV.

To determine the potential difference that stopped the electron, we will use the formula of potential energy change, ΔV.ΔV = KQ/R

where K is Coulomb’s constant (9 x 109 N•m²/C²), Q is the charge, and R is the distance between the charges.

Here, R = 0 since the electron is brought to rest by an electric field. Thus, we have:

ΔV = (K x 1.60 x 10⁻¹⁹ C)/0

ΔV = ∞

The potential difference required to stop the electron is infinite.

Now, we will determine the initial kinetic energy of the electron. The formula for kinetic energy is given as:

K.E = 1/2 mv²

K.E = 1/2 (9.11 x 10⁻³¹ kg) (460000 m/s)²

K.E = 9.92 x 10⁻¹⁸ J

Converting Joules to electron volts,

1 eV = 1.6 × 10⁻¹⁹ J

Thus, the Initial kinetic energy of the electron,

K.E = (9.92 x 10⁻¹⁸J) / (1.6 × 10⁻¹⁹ J/eV) = 62 eV

So, the initial kinetic energy of the electron is 62 eV.

Learn more about kinetic energy at https://brainly.com/question/8101588

#SPJ11

Answer:

yes

Explanation:

weight depends on the strength of gravity, so on a different planet, or on the moon for example, things would have a different weight but have the same mass.

The net force between Superman and Spiderman is 3 N, and it acts in the direction of Superman's force.

As per the question, the force exerted by :

Superman against Spiderman = 28 N

Spiderman against Superman = 25 N,

We can determine the net force and its direction by considering the following:

To find the net force, we need to subtract the forces exerted in opposite directions. Since Superman and Spiderman are pulling against each other, we have:

Net force = Force exerted by Superman - Force exerted by Spiderman

Net force = 28 N - 25 N

Net force = 3 N

The net force between Superman and Spiderman is 3 N.

To determine the direction of the net force, we need to consider the signs of the forces. Since Superman's force is greater than Spiderman's force, the net force will be in the direction of Superman's force.

Thus, the net force of 3 N is in the direction of Superman's force.

Therefore, the net force between Superman and Spiderman is 3 N, and it acts in the direction of Superman's force.

To learn more about the forces:

brainly.com/question/28969457