You are freezing juice to make your own popsicles. Describe what happens on a molecular level as the juice freezes. Be sure to us e appropriate science vocabulary in your response.

Answer: false

Explanation:

the more active you are, the more calories you are burning. consuming less calories is not ideal, you need to eat more since you are burning more than normal.

Answer:False

Explanation:The more active you are, the more calories you burn. Calories are a form of energy and you need to regain that energy by eating more calories

Answer:

A. In a closed system, the potential energy at the bottom is equal to the kinetic energy at the top.

Explanation:

According to the law of conservation of energy, energy is neither created nor destroyed but transformed from one form to another.

Based on the premise of the law of conservation of energy, both kinetic energy and potential energy are equal at the top and bottom in the system.

This way energy is conserved.

Answer:

A

Explanation:

Answer:

I beleive B because its on land and the tecnotic plates are moving opposite directions pulling the ground into a tear like hole

Explanation:

what happen when you take two sides of something and pull opposite directions right it tears the same will happen to the groung.

Answer:

A light bulb has a resistance inside of it, when current flows through the resistance, the electrons interact with the electrons and particles inside the resistance. Those interactions leave energy in the resistance in the form of heat, so as the current flows through the resistance, the temperature of the resistance increases until the point it starts to become bright and starts radiating light (this happens really fast, that's why the light bulbs light up almost immediately)

When she puts the slider at position A, she reconnects a circuit. Now, for that circuit a current can flow, and pass through the resistance in the light bulb, this resistance heats up, and starts radiating light.

When she returns to position B, the circuit is not connected anymore. This means that the current flow stops, then there is no more current flowing through the resistance, then the resistance beggings to cool down, and stops radiating light.

Answer:

A

Explanation: The hotter things get the more thermal energy they have

Also don't ever take pictures like this again

Answer:A

Explanation:

1  kg of boiling water is hot enough to melt a block of ice more quickly

Answer:

k  = 51.09 N/m

Explanation:

Given,

mass, m₁ = 0.3 Kg

length of spring, x₁ = 0.27 m

Mass, m₂ = 2.80 Kg

Length of spring, x₂ = 0.750

We know that

Restoring force, F = k x

Gravitation force, F = m g

Now,

m₁ g = k x₁ ......(1)

And

m₂ g = k x₂   .......(2)

where k is spring constant

Subtracting equation (2)- (1)

(m₂-m₁)g = k(x₂-x₁)

(2.8-0.3) x 9.81 = k (0.75 - 0.27)

24.525 = k x 0.48

k  = 51.09 N/m

Hence, spring constant is 51.09 N/m.

Answer:

32.32857

Explanation:

Searched on the web

Answer:

a

Explanation:

because your trying to decide

The measuring of how light reflects off of mirrors made from different materials falls under the field of optics. Therefore, option (C) is correct.

Optics can be described as the branch of physics that studies the behavior, and properties of light and its interactions with matter and the construction of instruments that detect it. Optics can be described as the behavior of visible, ultraviolet, and infrared light because the light is electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.

The most general is geometric optics which treats light as a collection of rays that travel in straight lines and bend as they pass through or reflect from surfaces.

Physical optics can be described as a more comprehensive model of light, which involves wave effects such as interference and diffraction and that cannot be considered in geometric optics.

Learn more about optics, here:

https://brainly.com/question/14703021

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Answer:

The velocity of the merry-go-round after the boy hops on the merry-go-round is 1.5 m/s

Explanation:

The rotational inertia of the merry-go-round = 600 kg·m²

The radius of the merry-go-round = 3.0 m

The mass of the boy = 20 kg

The speed with which the boy approaches the merry-go-round = 5.0 m/s

[tex]F_T \cdot r = I \cdot \alpha = m \cdot r^2 \cdot \alpha[/tex]

Where;

[tex]F_T[/tex] = The tangential force

I =  The rotational inertia

m = The mass

α = The angular acceleration

r = The radius of the merry-go-round

For the merry go round, we have;

[tex]I_m \cdot \alpha_m = I_m \cdot \dfrac{v_m}{r \cdot t}[/tex]

[tex]I_m[/tex] = The rotational inertia of the merry-go-round

[tex]\alpha _m[/tex] = The angular acceleration of the merry-go-round

[tex]v _m[/tex] = The linear velocity of the merry-go-round

t = The time of motion

For the boy, we have;

[tex]I_b \cdot \alpha_b = m_b \cdot r^2 \cdot \dfrac{v_b}{r \cdot t}[/tex]

Where;

[tex]I_b[/tex] = The rotational inertia of the boy

[tex]\alpha _b[/tex] = The angular acceleration of the boy

[tex]v _b[/tex] = The linear velocity of the boy

t = The time of motion

When the boy jumps on the merry-go-round, we have;

[tex]I_m \cdot \dfrac{v_m}{r \cdot t} = m_b \cdot r^2 \cdot \dfrac{v_b}{r \cdot t}[/tex]

Which gives;

[tex]v_m = \dfrac{m_b \cdot r^2 \cdot \dfrac{v_b}{r \cdot t} \cdot r \cdot t}{I_m} = \dfrac{m_b \cdot r^2 \cdot v_b}{I_m}[/tex]

From which we have;

[tex]v_m = \dfrac{20 \times 3^2 \times 5}{600} = 1.5[/tex]

The velocity of the merry-go-round, [tex]v_m[/tex], after the boy hops on the merry-go-round = 1.5 m/s.

Answer:

idrk im jus here for the points[tex]\lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n[/tex]∈ω≠≠

Explanation:

Answer:

acceleration of 3ms2

Explanation:

we can calculate the net force on the bowling ball from the above equation. Therefore, 30N of force is required to accelerate the bowling ball down the alleyway at a rate of 3ms2

Answer:

i dont think its possible without a picture

Explanation:

Answer:

The answer is 7.5 M/s

Explanation:

The acceleration is not given so you should divide the mass by the force to acheive your answer :)

Answer:

sodium chloride

Explanation:

α prєcípítαtíσn rєαctíσn rєfєrs tσ thє fσrmαtíσn σf αn ínsσluвlє sαlt whєn twσ sσlutíσns cσntαíníng sσluвlє sαlts αrє cσmвínєd. thє ínsσluвlє sαlt thαt fαlls σut σf sσlutíσn ís knσwn αs thє prєcípítαtє, hєncє thє rєαctíσn's nαmє. prєcípítαtíσn rєαctíσns cαn hєlp dєtєrmínє thє prєsєncє σf vαríσus íσns ín sσlutíσn.

A precipitation reaction is a chemical reaction in which two soluble salts (ionic compounds) in an aqueous solution (solution with water as the solvent) yield insoluble, solid salt, a precipitate, as one of the products. It is generally a double replacement reaction, in which there are two ionic compounds, and their ions switch (AB+CD yield AC+BD).

Example:

[tex]\mathbb{\green{Pb(NO_{3} )_{2} +2KI  ⇒2KNO_{3} +PbI_{2}}}[/tex]

N.B. The (s) indicates a solid (or precipitate), whereas (aq) means that the compound is dissolved in an aqueous (water-containing) solution.

Answer:

:)

Explanation:

Answer:

Q = 1086.75 [J]

Explanation:

We must use the following equation of thermal energy, which relates the specific heat to the mass and to the change in temperature.

[tex]Q=m*C_{p}*(T_{final}-T_{initial})\\[/tex]

Where:

m = mass = 15.75 [g]

Cp = specific heat = 0.46 [J/g*C]

Tfinal = final temperature = 175 [°C]

Tinitial = initial temperature = 25 [°C]

Now replacing:

[tex]Q=15.75*0.46*(175-25)\\\\Q= 1086.75[J]\\[/tex]

Answer:

2,336,000

800,000 × 0.08 = 64,000

800,000 + (64,000×24)

Answer:

Air condenses and rises up

[tex]E_c = \dfrac{mv^2}{2}[/tex]

[tex]E_c = \dfrac{25\cdot (5^2)}{2}[/tex]

[tex]E_c = 312.5 \text{ J}[/tex]

Answer:

I am pretty sure that it is one

Answer:

Explanation: is 1

Answer:

the momentum is 50 kg m/s

Explanation:

The computation of the momentum is shown below;

As we know that

Momentum = mass × velocity

where

mass = 5 kg

And, the velocity is 10 m/s

So, the momentum is

= 5 × 10

= 50 kg m/s

Hence, the momentum is 50 kg m/s

Answer:

W= m*g

5.4=9.8*m

mass = 0.55

Explanation:

KE = mv2 b. Suppose Karl uses a different puck with. = (85.0 kg)(8.5 m/s) half the mass ... How will. = 3.1X103 J the kinetic energy and work differ from KE; + PE; = KE; + PE those in ... If the puck has half the mass, it still .

Answer:

3431.875 J or 3.432 kJ

Explanation:

Kinetic energy can be found using the equation m/2*v^2.

We know m and v and we can plug in those values to get the answer.

95/2 times 8.5^2 = 3431.875 J or 3.432 kJ.

Explanation:

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Answer:

option c

Explanation:

6420/55

116.7

approximately 117

Answer:

145854.24J

Explanation:

Given parameters:

Specific heat capacity of water = 4.184J/g°C

Mass of the water  = 700g

Initial temperature  = 25.6°C

Final temperature = 75.4°C

Unknown:

Thermal energy  = ?

Solution:

To solve this problem, we use the expression below;

 H  = m x c x Ф

H is quantity of heat

m is the mass

c is the specific heat capacity

Ф is the temperature change

  H  = 700 x 4.184 x (75.4 - 25.6)  = 145854.24J