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Roseanne heated a solution in a beaker as part of a laboratory experiment on energy transfer. After a while, she noticed the liquid solution began to circulate within the beaker. What process involving heat transfer did Roseanne observe inside the beaker?


I think it is convection hope I could help.

Related Questions

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Which of the following is not an example of kinetic energy? mechanical energy nuclear energy electrical energy thermal energy

It is only mechanical energy that is kinetic energy while the other choices are not kinetic energy. Nuclear, electrical and thermal are other types of energy. Hope this answers the question. Have a nice day. Feel free to ask more questions.

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What happens when the temperature of an object increases? A. The particles move closer together. B. The particles move faster. C. The number of particles increases. D. The particles stop moving.

I believe the correct answer from the choices listed above is option B. When the temperature of an object increases, the particles move faster since kinetic energy of the molecules increases. Hope this answers the question. Have a nice day.

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A snowmobile has an initial velocity of 3.0 m/s Part 1: If it accelerates at the rate of 0.5 m/s/s for 7.0 sec, what is the final vel.? Part 2: If it accelerates at the rate of -0.60m/s/s, how long will it take to reach a complete stop?

Answer:

Part a)

v_f = 6.5 m/s

Part b)

t = 5 seconds

Explanation:

Part a)

As we know that

v_f = v_i + at

here we know that

v_i = 3 m/s

a = 0.5 m/s^2

t = 7.0 s

so we will have

v_f = 3 + (0.5)(7.0)

v_f = 6.5 m/s

Part b)

if finally the snowmobile comes to rest

So here we can say that

v_f = 0

v_i = 3.0 m/s

a = -0.60 m/s^2

so now we have

v_f = v_i + at

0 = 3.0 - (0.60)t

t = 5 s

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Nuclear reactions result in tremendous amounts of a. uranium. b. energy. c. fission. d. mass.

I believe the correct answer from the choices listed above is option B. Nuclear reactions result in tremendous amounts of energy. nuclear reaction is considered to be the process in which two nuclear particles interact to produce two or more nuclear particles or ˠ-rays. Hope this answers the question.

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If a 375 mL sample of water was cooled from 37.5 C to 0 C how much heat was lost in joules?

Please, you have to apply the formula below:

Q=c∗m∗Δt

where Q is the energy lost,
 
c is the specific heat of water,
 
m is the mass of water involved,

so m=3.75 *10^-1 Kg
 
c=4,184 J/(Kg*°C)

delta t=37.5 °C

I hope my answer has come to your help. God bless and have a nice day ahead!

Posted in Physics

The heater in the thermostat control circuit in the cooling mode is active when the ____.

Here is the correct answer that would best complete the given statement above. The heater in the thermostat control circuit in the cooling mode is active when the heat anticipator in the thermostat control circuit is in the heating mode. Hope this is the answer that you are looking for. 

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1. How many correct experiments do we need to disprove a theory? How many do we need to prove a theory? Explain. 2. A guidebook describes the rate of climb of a mountain trail as 120 meters per kilometer. How can you express this as a number with no units?

1.  You can never prove a theory. All theories and laws and scientific knowledge in general is provisional. If your theory is inconsistent with an experiment (and you are sure the experiment is correct), your theory needs to be pitched or modified.

2. 
change the meters to kilometers; 

120 m/km = .12 km/km = .12 

or the kilometers to meters; 

120 m/km = 120 m/1000m = .12 

This sounds like its telling you how far you climb vertically (.12 km) for every 1 km that you walk along the slanted, winding trail. 

The unitless number ".12" is usefull because now you can think of the rate of climb in any units you want. So you rise vertcally .12 miles for every mile you walk the trail, or you rise .12 ft for every foot you walk the trail, etc.

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Where do plants get energy to live and grow?

From the sun, i think thats what it is. 

Posted in Physics

Will upvote!! True or False- The parts of a mixture keep their own properties when they are combined.

I believe the correct answer is false. The parts of a mixture do not keep their own properties when they are combined. When they are combined, they exhibit or behave with different properties since each atom is bonded which gives them unique properties. Hope this helps.

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Explain Why must a cooling system do work to transfer thermal energy?

Although internal energy will not spontaneously flow from a cold region to a hot region, it can be forced to do so by doing work on the system.Refrigerators and heat pumps are examples of heat engines which cause energy to be transferred from a cold area to a hot area. Usually this is done with the aid of a phase change, i.e., a refrigerant liquid is forced to evaporate and extract energy from the cold area. Then it is compressed and forced to condense in the hot area, dumping its heat of vaporization into the hot area. ARE YOU FROM K12?

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Which of the following parts of an organism is most likely to become fossilized? A.)tooth B.)skin C.)heart D.)Lung

The tooth because skin, the heart, and a lung are all soft tissue and are less likely to become fossilized. Whereas the tooth is a hardened material like bones. :)

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Which is an example of transforming potential energy to kinetic energy? Check all that apply. changing thermal energy to electrical energy changing chemical energy to thermal energy changing nuclear energy to radiant energy changing radiant energy to electrical energy changing mechanical energy to chemical energy

When we say potential energy, this is the energy at rest. And kinetic energy is the energy at motion. So, here are the examples of energy that is transforming from potential energy to kinetic energy: changing thermal energy to electrical energy, and changing radiant energy to electrical energy. Hope this answer helps.

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Which parts of an electric generator are connected? two brushes two slip rings the armature and axle the armature and commutator

I think the correct answer from the choices listed above is the last option. The parts of an electric generator that are connected are the armature and commutator.  An armature generally refers to one of the two principal electrical components of an electromechanical or electrical machine. Hope this helps. Have a nice day.

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If a substance containing charged ions and electrons can be compressed so that the particles have less space between them, the substance is a gas. plasma. solid. liquid.

Answer: Option (b) is the correct answer.

Explanation:

Plasma is a hot ionized gas that contains approximately equal number of both positive ions and negatively charged electrons.

Thus, we can conclude that if a substance containing charged ions and electrons can be compressed so that the particles have less space between them, the substance is a plasma.

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If two carts collide, what type of collision will conserve both momentum and kinetic energy? a. head on b. perfectly inelastic c. none d. perfectly elastic

The appropriate answer is d. perfectly elastic. When a perfectly elastic collision occurs both momentum and kinetic energy are preserved. Momentum is the mass of an object times its velocity while kinetic energy is the energy that a moving object has due to its motion. In an elastic collision kinetic energy would be converted to some other form of energy. 

Posted in Physics

Alai is comparing the physical property of two materials. He is hitting each with a hammer to observe what happens. What physical property of the materials is Alai most likely observing? solubility conductivity hardness odor

Answer: Alai is most likely observing the hardness of the materials.

Explanation: Hardness is defined as the property of a material to resist a change in its structure when applied to a external force.

Hard materials will not change their shape when they are hit with a hammer whereas soft materials will  change their shape when they are hit with a hammer.

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A satellite in space experiences direct sunlight and heats up. During periods when it receives not direct sunlight, what happens

It tries to maintain the normal temperature of the metals used.
There are two ways the Scientific and the Normal.( for a lack of better word)
Normal: The heat escapes into space.
Scientific: As the molecules of the element heat up and vibrate for long periods they lose heat so they return to their original temperature (at least try to)

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When would the temperature and thermal energy of an object differ?

The difference between temperature and thermal energy is that temperature measures the average kinetic speed of molecule and thermal energy is the total kinetic energy of all particles in a given substance.

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Which makes fast-moving water a greater force of erosion? A. greater heat capacity B. greater energy C. increased density D. greater oxidation

Answer:

B. Greater energy

Explanation:

Fast moving water is very energetic as its can displace very large rocks, boulders and make pebbles and sand out of them through the process r erosion. Fast moving water have kinetic energy, it opposes anything that come in its way. As river make its own channel by eroding plane. Many antecedent rivers have make their channel by cutting large mountains too.

Posted in Physics

Democritus thought that matter was made of tiny particles A. of earth, air, fire, and water. B. that could not be divided. C. that could be divided. D. that were all round and smooth.

Correct answer choice is :


B) That could not be divided.


Explanation:


Democritus was a Greek scholar who lived within 470-380 B.C. He elaborated the theory of the atom, Greek for permanent. Democritus thought that everything in the world was made up of atoms, which were tiny and durable. They assumed that matter was made up of very small particles. They named these particles atoms, which comes from an antique Greek word signifying permanent. These atoms were supposed to be absolutely indivisible and forever.

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