When using a screw to hang a picture, it is important to understand its function. The best description of a screw is option B - "A screw allows you to use less force because a screw acts like an inclined plane."
Screws are simple machines that have an inclined plane wrapped around a cylinder. This inclined plane is known as the thread. As the screw is turned, the thread pulls the screw into the material it is being screwed into, allowing it to hold on tightly.
Because of this design, screws are able to reduce the amount of force needed to hold an object in place. This is because the force applied to the screw is spread out over a larger area, making it easier to turn the screw and insert it into the material.
In conclusion, when using a screw to hang a picture or any other object, remember that it is an inclined plane wrapped around a cylinder, designed to reduce the amount of force needed to hold an object in place.
Answer: The answer is B! <3
Explanation:
When Blake puts a screw into his wall, it is a good description of an inclined plane. The threads of a screw act like an inclined plane to increase the distance over which you exert the input force. As the threads of the screw turn, they exert an output force on the wood, pulling the screw into the wood. So the answer is B. I hope this helped! :)
Match these items with their appropriate test.
1. earth viewed from space minerals
2. commanded first ship to sail around earth core
3. 7,900 miles mantle
4. hills, valleys, rivers, plains Magellan
5. layer below crust diameter at poles
6. at earth's center landforms
7. about 3,000 types a large sphere
Answer:
1. Earth viewed from space - Remote Sensing Test
2. Commanded first ship to sail around Earth - History Test
3. 7,900 miles mantle - Geology Test
4. Hills, valleys, rivers, plains - Geography Test
5. Layer below crust diameter at poles - Geophysics Test
6. At Earth's center landforms - Geophysics Test
7. About 3,000 types a large sphere - Astronomy Test
What type of heat transfer is demonstrated in Part 1?
How long did it take for the butter to melt off of the plastic fork? The metal fork?
How do explain the difference in time between the two forks?
What type of heat transfer is demonstrated in Part 2?
What happened when the warm water bottle was placed over the cold water bottle? Why?
What happened when the cold water bottle was placed over the warm water bottle? Why?
Answer:
32 hours
Explanation:nc
Besides having an emf, what is necessary for an electric current to perform useful work?
Answer:
To produce an electric current, three things are needed: a supply of electric charges (electrons) which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges.
Explanation:
The process by which hot and cold air are transferred in the atmosphere is
A. radiation B. insulation C. convection D. conduction
Answer:
C. convection
Explanation:
this is the transfer of heat through liquid or gas (heat moving through air)
A student is looking at a model of a neutral atom. The model shows that the atom has 19 subatomic particles in the nucleus. Ten of those subatomic particles do not have a charge.
Which statement about the model of the atom is true?
Answer:
The atom has 9 electrons
Explanation:
I don't see a list of possible choices, but as for what I can guess this is the correct answer. An atom with the same number of electrons as protons will be neutral, as stated in the problem. If this isn't what you are looking for. some other possible answers are the atomic weight will be 19, the atom has 10 neutrons, the atom has 9 protons, and the atom is a fluorine atom.
An atom generally consists of three important subatomic particles. They are protons, neutrons and electrons. Here the given atom has 19 subatomic particles, 10 of them are chargeless. So the atom is Fluorine.
What are subatomic particles?The particles which are smaller in size than an atom are defined as the subatomic particles. The positively charged subatomic particles are called the protons whereas the negatively charged particles are called the electrons. The neutrons does not have a charge.
The number of protons or electrons in an atom is the atomic number. Here the atomic number of Fluorine is 9, so it has 9 protons and electrons. The atomic mass of fluorine is 19.
The number of neutrons in Fluorine is given as:
No: of neutrons = Mass number - Atomic number
19 - 9 = 10
Thus the given atomic model is of Fluorine.
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A student lifts a book from a desk.
How does the book’s energy change?
A. gains kinetic energy
B. gravitational potential energy increases
C. potential energy decreases
D. potential energy converted to kinetic energy
The capacity to perform work is defined as the energy. This energy can be stored in many forms. When a student lifts a book from a desk the potential energy is converted to kinetic energy. The correct option is D.
What is potential energy?The energy stored by an object or the system by virtue of its position or arrangement of the parts is defined as the potential energy. An objects potential energy depends on its physical properties and the position of a system.
The energy possessed by an object because of its motion is called the kinetic energy. The simple activities like walking, running, throwing and falling involves kinetic energy. The kinetic energy of an object depends on the mass and speed.
Here when we lift a book which is at rest in the table, it possess potential energy and when it is lifted from the table it has acquired motion and so it has kinetic energy.
Thus the correct option is D.
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Electrical resistance is a measure of resistance to the flow of _?____
pleasee help
Answer:
Electrical resistance is a measure of resistance to the flow of electric current.
I Hope This Helps!
The process by which hot and cold air are transferred in the atmosphere is
A radiation. B insulation. C convection. D conduction.
D. conduction
option d is the correct answer
PLEASE ANSWER QUICKLY!!!!! Which of the following is NOT a function of your integumentary system?
A) Protecting against infection
B) Synthesizing vitamin D
C) Maintaining Fluid Balance
D) Stabilizing blood pressure
Answer: Must be a trick question.
Explanation: All of these are a function of the integumentary system.
Lab Report
Ocean Currents
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U2_ Lab_OceanCurrents_Alice_Jones.doc).
Introduction
What was the purpose of the experiment?
Type your answer here:
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Type your answer here:
Write the procedure you followed for the second part of the experiment. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how temperature and salinity affect the flow of water. Write an evidence-based claim.
Type your answer here:
Draw a diagram (develop a model) that shows what happens when warm water mixes with cold water in the ocean. Use your model to explain how this causes ocean currents.
Type your answer here:
Ocean currents are large-scale movements of water within the ocean, driven by a combination of factors such as wind, temperature, salinity, and the Earth's rotation.
What conclusions can be drawn about how salinity and temperature affect water flow?As water becomes colder, it becomes denser and sinks, while warmer water rises to the surface. Similarly, as the salinity of water increases, its density increases, and it sinks, while less salty water rises to the surface. These density differences create circulation patterns, such as ocean currents and deep water circulation, which can have a significant impact on the distribution of heat, nutrients, and other important factors in the ocean environment.
An evidence-based claim that can be drawn from this information is that changes in temperature and salinity can have significant effects on the flow of water in the ocean. For example, if temperatures in a particular region of the ocean were to increase, it could potentially cause the water to become less dense and rise to the surface, which could disrupt ocean currents and affect the distribution of nutrients and other important factors. Similarly, changes in salinity, such as those caused by freshwater influx from rivers or melting ice, could also affect the density of ocean water and impact circulation patterns.
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