A student puts a beaker of boiling water where it touches a block of ice.
Which two statements are true?
A. Thermal energy will move from the boiling water to the ice.
B. Thermal energy will move from the air to the ice.
O c. Thermal energy will move from the air to the boiling water.
D. Thermal energy will move from the ice to the air.
O​

Answer:

Equilibrium is reached when demand equals supply.

Explanation:

Demand is the amount that consumers want and can buy of a certain product or service in a specific period of time and at a certain price. On the other hand, the supply is the amount that producers want and can sell of a certain product or service in a specific period of time and at a certain price.

In market equilibrium, the quantity demanded of the product or service equals the quantity supplied, so the price also equals. In other words, when market equilibrium is reached, demand and supply are the same, with their corresponding equilibrium price and quantity.

Two situations can occur:

Equilibrium is reached when demand equals supply.

Answer:

When a simple pendulum makes 10 oscillation in 20 seconds, the time taken for each osillation

=20/10

= 2seconds

hence, as the time period is calculated to be 10secondd, the frequency of oscillation

=1/T

=1/2

= 0.5 here's

Answer:

A change in the size of the population may bring about changes in the culture. For example, food brought to this country by immigrant groups have become common in many American kitchens. Population increases and decreases affect the economy. For example, by increasing the demand for goods and services, a growing population may increase employment and stimulate the economy. An increase in the general population also means that there are more people occupying the same amount of space, which creates more crowded conditions. In addition, the larger population brings increased demand for energy, food, housing, schools, stores, and transportation. People also bring about changes simply by moving from one place to another. Migrations of people within a country can cause social changes, such as the loss of regional distinction within the country. Social and cultural changes also result from changes in the average age of a population. When fewer people are having babies, for example, there is less need for schools, recreation centers, and other services geared toward children.

Explanation:

Population changes stimulate social change in a variety of ways, including direct and indirect changes in food habits and the educational system, migration patterns, and people's overall mental and physical health.

Population growth is a negative factor for the environment because rural areas are converting to urban areas and more people are migrating to cities. Due to this rapid population growth, a food shortage will occur, the cost of living will increase in the advanced cities, the demand will increase but not the supply, and this will lead to mental pressure on the generation to keep a place to live and food to eat and in this way the social change will happen.

Hence, population changes stimulate social change in a variety of ways, including direct and indirect changes in food habits and the educational system, migration patterns, and people's overall mental and physical health.

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Answer:

??? I don't get it, please explain. What is your question????

Explanation:

Answer:

6.743 x 10² mm

Explanation:

Answer:

D) 42.87 m/s

Explanation:

First, find the time it takes him to land.  Given in the y direction:

Δy = 60 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

60 m = (0 m/s) t + ½ (9.8 m/s²) t²

t = 3.5 s

Next, find the speed needed to travel the horizontal distance in that time.  Given in the x direction:

Δx = 60 m

a = 0 m/s²

t = 3.5 s

Find: v₀

Δy = v₀ t + ½ at²

150 m = v₀ (3.5 s) + ½ (0 m/s²) (3.5 s)²

v₀ = 42.87 m/s

Explanation:

An IC engines means an Internal Combustion engine. Here, the combustion takes place in side a chamber or a cylinder internally, hence it is known as internal combustion engine.

Combustion is the process where oxygen reacts with the fuel and it burns to produce a large amount of force and heat. In each revolution of the crank, the engine creates a power stroke when the piston goes from the bottom dead center to the top dead center.

During each power stroke, the energy released forces the piston down and the crankshaft is rotated.

Answer:

Control Variable

Explanation:

A control variable is a variable that is held constant throughout the cause of an experiment, in order to test accurately the relationship between the dependent and the independent variables. The control variable, which is amount of water needed by the plants in this case, has the property of affecting the growth of the daisies, hence if it is not held constant, the result of the experiment might not be accurately attributed to the light source alone.

Therefore, to say with certainty that the difference seen in both categories of plants was from the difference in lighting alone, other variables (amount of water, type of soil, temperature etc.) has to be held constant

Answer:

1). Displacement = 24 m

2). Distance = 28 m

Explanation:

We will use the concept that distance is a scalar quantity and displacement is a vector quantity.

1). Displacement of the car between 0 s and 24 s

  Displacement = distance between origin (0, 0) and a point on x - axis (24, 0)

                          = 24 - 0

                          = 24 meters

2). Distance traveled by the car = Distance traveled by the car on the ramp

    = Distance traveled on the tracks (AB + BC + CD)

    AB = [tex]\sqrt{6^2+8^2}[/tex]

          = [tex]\sqrt{36+64}[/tex]

          = [tex]\sqrt{100}[/tex]

          = 10 m

    BC = 16 - 8

          = 8 m

    CD = [tex]\sqrt{8^2+6^2}[/tex]

          = 10 m

     Therefore, distance traveled by the car = 10 + 8 + 10

                                                                        = 28 m

Answer:

1). Displacement = -12 m

2). Distance = 12 m

Explanation:

Answer:

t = 5.56 s

Explanation:

In order to calculate the time interval taken by the mountain biker to come to a stop, we will use third equation of motion and first find the deceleration:

2as = Vf² - Vi²

where,

a = deceleration = ?

s = distance = 15 m

Vf = Final Velocity = 0 m/s

Vi = Initial Velocity = 5.4 m/s

Therefore,

2a(15 m) = (0 m/s²) - (5.4 m/s)²

a = - 0.972 m/s²

Now, we use 1st equation of motion:

Vf = Vi + at

therefore,

0 m/s = 5.4 m/s + (-0.972 m/s²)(t)

t = (5.4 m/s)/(0.972 m/s²)

t = 5.56 s

The time taken should be t = 5.56 s

here we used the third equation of motion

But first we determine the deceleration.

We know that

2as = Vf² - Vi²

here,

a = deceleration = ?

s = distance = 15 m

Vf = Final Velocity = 0 m/s

Vi = Initial Velocity = 5.4 m/s

So,

2a(15 m) = (0 m/s²) - (5.4 m/s)²

a = - 0.972 m/s²

Now, we use 1st equation of motion:

So,

Vf = Vi + at

0 m/s = 5.4 m/s + (-0.972 m/s²)(t)

t = (5.4 m/s)/(0.972 m/s²)

t = 5.56 s

Hence, The time taken should be t = 5.56 s

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Answer:

Si un objeto se mueve en relación a un marco de referencia (por ejemplo, si una profesora se mueve a la derecha con respecto al pizarrón, o un pasajero se mueve hacia la parte trasera de un avión), entonces la posición del objeto cambia. A este cambio en la posición se le conoce como desplazamiento. La palabra desplazamiento implica que un objeto se movió, o se desplazó.

Explanation:

El desplazamiento se define como el cambio en la posición de un objeto. Se puede definir de manera matemática con la siguiente ecuación:

\text{desplazamiento}=\Delta x=x_f-x_0desplazamiento=Δx=x  

f

​  

−x  

0

​  

start text, d, e, s, p, l, a, z, a, m, i, e, n, t, o, end text, equals, delta, x, equals, x, start subscript, f, end subscript, minus, x, start subscript, 0, end subscript

x_fx  

f

​  

x, start subscript, f, end subscript se refiere al valor de la posición final.

x_0x  

0

​  

x, start subscript, 0, end subscript se refiere al valor de la posición inicial.

\Delta xΔxdelta, x es el símbolo que se usa para representar el desplazamiento.

Debemos ser cuidados al usar la palabra distancia, ya que hay dos maneras de usar el término en física. Podemos hablar acerca de la distancia entre dos puntos, o podemos hablar de la distancia recorrida por un objeto.

La distancia se define como la magnitud o el tamaño del desplazamiento entre dos posiciones. Observa que la distancia entre dos posiciones no es la misma que la distancia recorrida entre ellas.

Es importante darse cuenta que la distancia recorrida no tiene que ser igual a la magnitud del desplazamiento (es decir, la distancia entre dos puntos). De manera específica, si un objeto cambia de dirección en su trayecto, la distancia total recorrida será mayor que la magnitud del desplazamiento entre esos dos puntos. Ve los ejemplos resueltos a continuación.

Answer:

yes

hope this will help you

Answer:

40 laps

Explanation:

400/10

40

PLS MARK ME AS THE BRAINLIEST

Answer:

Bernoulli

Explanation:

Hello! I took the k12 science quiz!  I hope you get an A!

Have a blessed day! :)

Bernoulli was the scientist who gave the idea that "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."

It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one,

Bernoulli was the scientist who gave the idea that "gases are formed from tiny particles so small you can't see them. The particles are spread out into a certain area and move when people walk through them."

The kinetic molecular theory of gases is stated via Bernoulli's principle. The hypothesis states that gas particles are tiny and separated from one another. But when things travel through them, they change from their position as a result of fluid dynamics.

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Answer:

A

The atomic mass tells us how many protons and electrons an atom has.

The answer is A.

Answer:

14. V=8

15. V=40

Explanation:

simplifying:

14. 4 32/8

V=8

15. 20 1000/50

V=40

Answer: The water and sun.  

   Please hit that brainlist button and hoped it helped you out.

Answer:

Explanation:

Adding heat can cause ice (a solid) to melt to form water (a liquid). Removing heat causes water (a liquid) to freeze to form ice (a solid). When water changes to a solid or a gas, we say it changes to a different state of matter. Even though the water's physical form changes, its molecules stay the same.

Answer: I do believe the answer is D if not then sorry and let others know in the comment section

The doll experiment did not suggest the African Americans felt more secure and positive because of school segregation. The correct option is D.

School segregation in the United States is the segregation of students based on their colors and caste. An institution can be predominantly owned by the black and only black students can study into it.

The Americans who are black belonged to the African continent. They felt more safety and secure by studying into this segregated school.

Thus, the correct option is D.

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Its a Conduction NO FOR REAL ITS A

Answer:

c, convection

Explanation:

edge 2020

Explanation:

VECTORS DEF: A vector is a quantity that has both magnitude and direction.

Answer:

the ball travels 0.85 miles per second

Explanation:

Answer:

0.85

Explanation:

Answer:

go on Quizlet they mosly have answers for civics

Explanation:

Answer:

57.1 m/s

Explanation:

Speed = Distance/Time

Speed = 800/14

Speed = 57.1 m/s (3sf)

Answer:

2.4 m/s

Explanation:

Momentum is conserved.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(0.08 kg)(0.5 m/s) + (0.05 kg)(0 m/s) = (0.08 kg)(-0.1 m/s) + (0.05 kg) v

0.04 kg m/s = -0.08 kg m/s + (0.05 kg) v

0.12 kg m/s = (0.05 kg) v

v = 2.4 m/s

Answer:

well, a chemical change will have to have something about its physically feature to be changed and it cannot be undone, say you burned wood, thats a chemical change as you cannot unburn it or remove the markings of the burn

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