The most important characteristic in designing the soundproof room is to create walls that

Answer:

B. A large number of atoms move from one place to another

Explanation:

Convection is heat transfer by the movement of atoms of a substance from one region to another across a temperature gradient. Since atoms of solids are rigidly held in place, convection only occurs in liquids and gases since they flow.

Convection occurs when the temperature of one region of a fluid (liquid or gas) is higher than its other region. There is thus a mass movement of atoms from one region to the other due to a temperature difference. The atoms will continue to move to the region of lower temperature until the temperature of both regions are the same at an equilibrium temperature.

Answer:

By applying an unbalanced force, you can change the motion of an object. Unbalanced forces can make an object at rest start moving, make a moving object stop, or change the direction and speed of the object.

Explanation:

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

To know more about plants visit:

https://brainly.com/question/31220793

#SPJ11

Answer: I's either A. Matter no longer exists or D. Particles no longer move

Explanation:

Sorry if I get it wrong

Hope his helps :)

Answer:

d

Explanation:

The velocity of the water at the given points (2.0, 4.0) is approximately 5.06 m/s.

To find the velocity of the water at the point (2.0, 4.0), we need to calculate its components: the horizontal velocity (v_x) and the vertical velocity (v_y).

Given that v_x is constant at 5.0 m/s, the horizontal velocity component remains the same regardless of the position.

To find the vertical velocity component, we can differentiate the equation for the path of the water with respect to x:

y = 4.0 + 0.8x - 0.40x^2

Differentiating both sides with respect to x:

dy/dx = d/dx (4.0 + 0.8x - 0.40 \(x^2\))

= 0 + 0.8 - 0.80x

Now, substitute the x-coordinate of the point (2.0, 4.0) into the derivative:

dy/dx at x = 2.0 = 0.8 - 0.80(2.0)

= 0.8 - 1.6

= -0.8 m/s

Therefore, the vertical velocity component (v_y) at the point (2.0, 4.0) is -0.8 m/s.

To find the resultant velocity (v) at that point, we can use the Pythagorean theorem:

v = \(\sqrt{v_x^2 + v_y^2}\)

\(= \sqrt{5.0^2 + (-0.8)^2}\)

\(= \sqrt{25.0 + 0.64}\)

\(= \sqrt{25.64}\)

\(\approx 5.06 , \text{m/s}\)

Hence, the velocity of the water at the point (2.0, 4.0) is approximately 5.06 m/s.

To learn more about velocity, refer to the link;

https://brainly.com/question/25749514

#SPJ4

The satellite's total energy in its stable orbit at an altitude of 4.0 × 10⁵ m above Earth's surface is approximately -1.052 × 10¹¹ Joules, predominantly gravitational potential energy.

To calculate the satellite's total energy in this orbit.

Given:

m₁ (mass of satellite) = 1500 kg

m₂ (mass of Earth) = 5.972 × 10²⁴ kg

r (distance from center of Earth to satellite) = 4.0 × 10⁵m + 6.371 × 10⁶ m

First, let's calculate the gravitational potential energy (U):

U = -G * (m₁ * m₂) / r

U = -6.674 × 10⁻¹¹ m³ kg⁻¹ s⁻² * (1500 kg * 5.972 × 10²⁴ kg) / (4.0 × 10⁵ m + 6.371 × 10⁶ m)

Calculating this expression:

U ≈ -1.123 × 10¹¹ J

Next, let's calculate the velocity of the satellite (v):

v = sqrt(G * m₂ / r)

v = sqrt(6.674 × 10⁻¹¹ m³ kg⁻¹s⁻² * 5.972 × 10²⁴ kg / (4.0 × 10⁵ m + 6.371 × 10⁶ m))

Calculating this expression:

v ≈ 3077 m/s

Now, let's calculate the kinetic energy (K):

K = (1/2) * m1 * v²

K = (1/2) * 1500 kg * (3077 m/s)²

Calculating this expression:

K ≈ 7.096 × 10⁹ J

Finally, let's calculate the total energy (E):

E = U + K

E = -1.123 × 10¹¹J + 7.096 × 10⁹ J

Calculating this expression:

E ≈ -1.052 × 10¹¹J

Therefore, The satellite's total energy in this orbit is approximately -1.052 × 10¹¹ Joules. The negative sign indicates that the energy is gravitational potential energy dominated, as expected in a stable orbit.

To learn more about  Gravitational potential energy click:

brainly.com/question/31096472

#SPJ12

The contamination hazard that is not considered when installing heating, ventilating, and air conditioning systems is radiation contamination.

One contamination hazard that is not typically considered when installing heating, ventilating, and air conditioning (HVAC) systems is biological contamination from outside sources. While HVAC systems are designed to filter out dust, dirt, and other airborne particles, they may not be equipped to handle biological contaminants, such as bacteria or viruses, that can be introduced from outside sources.

To minimize the risk of biological contamination, it is important to properly maintain HVAC systems, including changing filters regularly, ensuring proper ventilation, and regularly cleaning and disinfecting the system. Additionally, it may be necessary to incorporate additional air purification measures, such as UV germicidal irradiation or biocidal treatments, to ensure a safe and healthy indoor environment.

To know more about the contamination, here

brainly.com/question/28328202

#SPJ4

Answer:

a, b, a, c, that should be the order from top to bottom

In the balloon simulation, the red circles represent positive charges.

Electrostatics is the branch of physics that studies electric charges at rest. The interaction between electric charges is the foundation for electrostatics. These interactions can either be repulsive or attractive, depending on the types of charges. Electrostatics plays an important role in many aspects of our daily lives.
For example, we use it in the design of electrical circuits, lightning rods, and particle accelerators. The simulation demonstrates the following electrostatic principles: Like charges repel and opposite charges attract.

Each balloon has an equal amount of positive and negative charges when it is neutral.When a balloon is rubbed, electrons are transferred from one surface to the other, creating an imbalance of positive and negative charges.The excess charge is spread over the surface of the balloon. This charge creates an electric field.

As the balloon is rubbed, some of the electrons from the balloon's surface are transferred to the wool. The balloon becomes positively charged while the wool becomes negatively charged. As the balloon is brought closer to the wall, the positive charges on the surface of the balloon repel the positive charges on the surface of the wall.

This repulsion results in the balloons sticking out from the wall, indicating that the charges on the balloon are repelling the charges on the wall.The red circles in the simulation represent the positive charges.

For more such questions on charges visit:

https://brainly.com/question/2373424

#SPJ8

The correct response would be: "She should place a positively charged rod near the left sphere."

What is Charges?

In physics, charges refer to the fundamental property of matter that gives rise to electric interactions. Charges can be positive or negative, and they are responsible for the phenomenon of electric force, which is the force that acts between charged objects.

By bringing a positively charged rod near the left sphere, it will induce a redistribution of charges in the conductive sphere. The positive charges in the left sphere will repel the positive charges in the rod, causing the electrons in the left sphere to move away from the rod and distribute themselves more evenly across the surface of the sphere, leaving the side facing the rod with a net positive charge.

Learn more about Charges from the given link

https://brainly.com/question/18102056

#SPJ1

Answer:

A. A motor

Explanation:

Answer:

LOL! couldnt be me either bestieeeee

Answer:

-_-

Explanation:

i dont know What was XD??

The parts of the electromagnetic are designated as follows, from to the lowest energy: infrared photons, X-rays, ultraviolet light, visible light, infrared ( ir, and radio waves.

With normal use, the typical microwave oven lasts around seven years, and significantly less with heavy use and bad maintenance. As they become more dependent on it to reheat snacks and leftovers or to defrost meals, a large family may discover that they need to replace their appliance every four to five years.

A convection microwave includes extra characteristics in addition to being able to carry out all the tasks that a standalone microwave can. Foods can be grilled, baked, roasted, browned, and even crisped in convection microwaves.

To know more about Microwave visit:

https://brainly.com/question/15708046

#SPJ4

Answer:

Radio waves can be modified by their amplitude or frequency in order to transmit sound or data.

Explanation:

Hope this helped!!!

Even though the charge on the first object is greater, the forces that the two objects exert on each other are equal

Here is the missing information.

An exhausted bicyclist pedal somewhat erraticaly when exercising on a static bicycle. The angular velocity of the wheels takes the equation ω(t)=at − bsin(ct) for t≥ 0, where t represents time (measured in seconds), a = 0.500 rad/s2 , b = 0.250 rad/s and c = 2.00 rad/s .

Answer:

0.793 rad

Explanation:

From the given question:

The angular velocity of the wheel is expressed by the equation:

\(\omega (t) =\dfrac{d\theta}{dt}\)

The angular velocity of the wheels takes the description of the equation ω(t)=at−bsin(ct)

SO;

\(\dfrac{d \theta}{dt} = at - b \ sin \ ct\)

dθ = at dt - (b sin ct) dt

Taking the integral of the above equation; we have:

\(\int \limits^{\theta}_{0} \ d \theta = \int \limits ^{t=2}_{0} at \ dt - (b \ sin \ ct) \dt\)

\([\theta] ^{\theta}_{0} = a \bigg [\dfrac{t^2}{2} \bigg]^2_0 - \bigg[ -\dfrac{b}{c} \ cos \ ct \bigg] ^2_0\)

where;

a = 0.500 rad/s2 ,

b = 0.250 rad/s and

c = 2.00 rad/s

\(\theta = (0.500 \ rad/s^2 ) \bigg [\dfrac{(2s)^2}{2} \bigg] - \bigg[ -\dfrac{0.250 \ rad/s}{2.00 \ rad/s} \ cos \ (2.00 \ rad/s )( 2.00 \ s) \bigg] - \bigg [ \dfrac{0.250 \ rad/s}{2.00 \ rad/s}\bigg ] cos 0^0\)

\(\mathbf{\theta = 0.793 \ rad}\)

Hence, the angular displacement after two seconds = 0.793 rad

Answers:

20m/s/s

Explanation:

we know,

a = v-u/t

= 30- 0/1.5

= 20m/s/s

Answer:

The blue one.

Explanation:

Im pretty sure its because the blue is hotter.

The correct statement about Newton’s second law is that acceleration depends on mass and the amount of force applied.

Newton’s second law of motion states that the acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass. Mathematically, this law is represented as F = ma, where F is force, m is mass, and a is acceleration. According to this law, the amount of force applied and the mass of the object affect its acceleration. Therefore, option C is the correct statement.

Newton's second law is one of the most fundamental laws of classical physics. According to this law, the acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass. The law is mathematically represented as F = ma, where F is force, m is mass, and a is acceleration. This means that the amount of force applied and the mass of the object affect its acceleration.The acceleration is directly proportional to the force applied. This means that the greater the force applied, the greater the acceleration of the object. For instance, a heavier object will need more force to be pushed to achieve the same acceleration as a lighter object. The acceleration is inversely proportional to the mass of the object. This means that the greater the mass of the object, the lower the acceleration it will achieve with the same force applied. For instance, a lighter object will accelerate faster than a heavier object with the same force applied. Therefore, the correct statement about Newton’s second law is that acceleration depends on mass and the amount of force applied.

To know more about Newton’s second law visit :-

https://brainly.com/question/15280051

#SPJ11

Answer:

It would be O 18

To calculate the forecast for May using a four-month moving average, we will take the average of the demand for the previous four months (February, March, April, and May) and use that as the forecast for May.

Four-month moving average = (February + March + April + May) / 4

= (42 + 48 + 46 + X) / 4,

The data provided is as follows:

November = 39

December = 36

January = 40

February = 42

March = 48

April = 46

To find the four-month moving average, we add up the demand for the past four months and divide by four:

Four-month moving average = (February + March + April + May) / 4

= (42 + 48 + 46 + X) / 4, where X is the demand for May (the forecast value we want to determine).

We don't have the actual demand for May, so we can't calculate the exact forecast. However, if we assume that the demand for May is the same as April (46), we can estimate the forecast:

Four-month moving average = (42 + 48 + 46 + 46) / 4

= 46.5

Therefore, the approximate forecast for May, using a four-month moving average, is 46.5.

Learn more about forecast here

https://brainly.com/question/29791620

#SPJ11

Given,

V1 = 6 ml

T1 = 250 k

V2 = 9 ml

To find T2

According to Charles's Law,

V1/T2 = V2/T2

or, T2 = T1 V2/ V1

          = 250×9/6

          = 375 K

Because it is very unreactive, helium is used to provide an inert shielding ecosystem for making fiber optics and semiconductors, and for arc welding. Helium is also used to stumble on leaks, together with automobile air-conditioning structures, and because it diffuses quickly it's far used to inflate automobile airbags after impact.

Learn more about Helium at https://brainly.com/question/26226232

#SPJ2

Answer:

honestly not sure what to do good luck though

To determine the temperature increase of each car, we can use the principle of conservation of energy. The total kinetic energy of the cars before the collision is converted into thermal energy (heat) after the collision.

The formula to calculate the temperature increase is:
ΔT = (ΔE) / (m * c)
Where:
ΔT is the temperature increase,
ΔE is the change in thermal energy (equal to the initial kinetic energy of the cars),
m is the mass of each car, and
c is the specific heat capacity of iron.
Since the specific heat capacity of iron is approximately 450 J/(kg·°C), and the mass of each car is not given in the question, we cannot determine the specific temperature increase without that information. Therefore, the answer cannot be expressed with the appropriate units without knowing the mass of the cars.

To know more about , kinetic energy, click here https://brainly.com/question/999862

#SPJ11

Answer:

My quiz said "by pushing for laws that helped improve working conditions and increase wages."

Explanation:

hopefully this helpes i dont really have an explanation i just got the question right on my quiz

Answer:

by pushing for laws that helped improve working conditions and increase wages. (got it right on usa test prep)

Explanation:

Given :

Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connected with wires as shown in the circuit given in figure. The current flowing in both the circuits is the same.

To Find :

Will the heat produced in both the cases be equal.

Solution :

Heat released is given by :

H = i²Rt

Here, R is resistance and is given by :

\(R = \dfrac{\rho L}{A}\)

So,

\(H = i^2\times \dfrac{\rho L}{A} t\\\\H = \dfrac{i^2\rho Lt}{A}\)

Now, in the question every thing is constant except for the length of the wire and from above equation heat is directly proportional to the length of the wire.

So, heat produced by Reem's wire is more than Nain one.

Hence, this is the required solution.

True, The sun is a relatively young star, near the beginning of its life. A star is a celestial object that creates light and heat.

They form from dense clouds of gas and dust in space known as nebulae. In general, stars are classified into three categories depending on their mass, composition, and luminosity.Stars in their early life stages are young and have not reached the later stages of their life yet.

They also have more energy and are hotter than stars that have reached later stages. The sun is a relatively young star, near the beginning of its life. It is classified as a G-type main-sequence star, which means it's a mid-sized star with a surface temperature of about 5,500 degrees Celsius.The sun, like all stars, formed from a cloud of gas and dust, and its energy comes from nuclear fusion reactions in its core. As it converts hydrogen into helium, it emits light and heat. It will continue to do so for billions of years to come.

Learn more about celestial Visit : brainly.com/question/30244024

#SPJ11

Answer:  metals, non metals and semi metals

Explanation:

The variety of electrons on this -five-c charge is 2.63× 10¹⁹ electrons.

An electron is a subatomic particle whose price is the bad simple rate. Electrons belong to the first technology of the leptonic particle circle of relatives and are usually considered essential debris because they don't have any regarded composition or substructure.

Electrons are the smallest particles that make up an atom and feature a bad charge. In neutral atoms, the variety of protons and electrons is the same. for example, a hydrogen atom has most effective one electron and one proton. on the other hand, a uranium atom has 92 protons and consequently 92 electrons.

Q =ne

-five = n × 1.6 × 10⁻¹⁹

range of electrons = 5/1.6 × 10⁻¹⁹

                                      = 2.sixty three  × 10¹⁹ electrons.

Learn more about electrons here:-https://brainly.com/question/860094

#SPJ4