PHYSICS HIGH SCHOOL

What does the term “basic unit of matter” refer to?Select one of the options below as your answer:a. Atoms
b. Elements
c. Molecules

Answers

Answer 1
Answer: Atom is themost basic unit of matter. They are the general term used to describe pieces ofmatter. But a different kind of atom makes up an element.  A combination of atom of different elements createsa molecule. For example, you have water; it has a chemical formula of H2O. If youseparate H from O, you have two atoms. Two atoms for hydrogen and one atom foroxygen. However, they are of different elements. And when you combine them toform H2O, you create a molecule. The answer is A.

Related Questions

An isometry preservesorientationdistancedirection
There are three main types of clouds. the high cirrus clouds, the layered stratus clouds, and what third type of puffy clouds?
It takes 56.5 kilojoules of energy to raise the temperature of 150 milliliters of water from 5°C to 95°C. If youuse an electric water heater that is 60% efficient, how many kilojoules of electrical energy will the heater actually use by the time the water reaches its final temperature?
The material in which a wave travels is called ____.a. a mediumc. airb. waterd. opaque
Radio waves travel at the speed of light, which is 3.00 u 108 m/s. How many kilometers will radio messages travel in exactly one year?

(PLEASE HELP) Identify the following as electromagnetic (E) or mechanical (M) waves.sound waves

water waves

radio waves

ultraviolet waves

waves in a wheat field

Answers

Answer;

Mechanical waves;

  • sound waves
  • waves in a wheat field
  • water waves

Electromagnetic waves

  • Radio waves
  • Ultraviolet

Explanation;

  • A wave is a transmission of a disturbance from one place, the source to another.
  • Waves can be classified as mechanical waves or electromagnetic waves depending on the requirement of a material medium.
  • Mechanical waves are those waves that require a material medium for transmission, they include, sound waves, water waves, etc. The transmission of these waves is by vibration of particles in the medium.
  • Electromagnetic waves are those waves that do not require a material medium for transmission.They include, radio waves, microwaves, and all the waves in the electromagnetic spectrum.
sound waves (m)

water waves (m)

radio waves (e)

ultraviolet (e)

waves in a wheat field (m)

A physical change occurs when a material changes shape or size but the composition of the material does not change. True or False?

Answers

It is true that a physical change occurs when a material changes shape or size, but the composition of the material does not change. The correct answer is True. 

What is the purpose of sensory adaptation

Answers

Sensory adaptation is when the sensory receptors change and adapt to different stimuli. For example in a darkened room your pupils enlarge allowing more of the available light in. This is why you can see a little better in the dark after you get used to it.
Sensory adaptation is a phenomenon in which sensory neurons change their level of sensitivity to a constant stimulus over time. This adaptation allows people to adapt to their environments while balancing the need to receive new sensory input. Neurons involved with smell, hearing, taste, touch, and sight can all exhibit this phenomenon.

If vx = 0.40 meters/second and vy = 3.00 meters/second, what is the value of θ?

Answers

θ  is the angle whose tangent is  3/0.4 = arctan (7.5) = 82.4°

(That's the angle above the horizontal.  If that doesn't match
the  θ  in your diagram, too bad !  For some strange reason,
I wasn't able to see your diagram.)

Arun places a beaker of water on a hotplate and turns the hotplate on. The temperature in the room is 25 ºC. After the water heats to 75 ºC, she adds pieces of ice to the beaker. Which mode of transfer of heat energy occurs in the water during this experiment? Justify your answer

Answers

Answer:

Thermal convection

Explanation:

When ice cubes are placed in water, ice cubes start melting. This is because water transfers its heat to ice cubes until the temperature becomes equal and the process is called "thermal Convection".

Thermal convection is the mode of transfer of heat energy that will occur when ice cubes will be added to the hot water and at the end of the experiment when both are at the same temperature, no ice cube will left.

Hence, the correct answer is "thermal convection".

Natalia is walking to an apartment at 0.5 m/s. She walks 40 m to her door. How long did Natalia walk?

Answers

Answer:

80 seconds

Explanation:

40/.5 is equal to 40*2 which is 80 or in another way 1 second is 2 seconds is 1 m
Other Questions
Many physical quantities are connected by inverse square laws, that is, by power functions of the form f(x)=kx^(-2). In particular, the illumination of an object by a light source is inversely proportional to the square of the distance from the source. Suppose that after dark you are in a room with just one lamp and you are trying to read a book. The light is too dim and so you move halfway to the lamp. How much brighter is the light?
Would a tiger be a consumer or producer?
calculate the area that will experience a force of 6000N from liquid exerting pressure of 300Pa. 1kPa=1000Pa​
Calculate the potential energy of an object with a mass of 15 kg while sitting on a shelf that his 20 m high