Answer:
Mass is an substance which occupies space
Explanation:
Answer: a coherent, typically large body of matter with no definite shape.
Explanation:
Which part of the diagram represents the proton? A) A B) B C) C D) D
Answer:
c
did it on usa test prep
Got stuck on question 3 need help please
Which SI units are combined to describe force
Answer:
the newton (N)
the pascal (Pa)
Explanation:
Combinations of base and derived units may be used to express other derived units. For example, the SI unit of force is the newton (N), the SI unit of pressure is the pascal (Pa)—and the pascal can be defined as one newton per square metre (N/m2).
Imagine you are an astronomer who recently discovered a new planet orbiting a distant star. Which set of characteristics would you use to classify this planet as an inner or terrestrial planet? Check all that apply.
Answer:
A: dense and solid
E: located near a star
Explanation:
Answer:
A: dense and solid
E: located near a star
Explanation:
If your body is wet what is the lowest electrical voltage can be fatal?
Answer:
The lowest electrical voltage would be 100 volts.
Answer:
15 volts would be fatal
Please Help!!!! What is the momentum of a 0.01 kg toy car moving at 5.0 m/s? (2 points) 500 kgm/s 50 kgm/s 0.5 kgm/s 0.05 kgm/s
Answer: 0.05 kgm/s
Explanation:
what is science and how does it work?
In freefall, heavier objects fall with a greater acceleration than lighter objects.
Answer:
That is not true all objects fall at the same speed excepts things like feathers or paper.
Answer: false
Explanation: apex
which scenario would be classified as a conceptual model
The scenario that would be classified as a conceptual model is A student thinks of bouncing balls as representing gas molecules.
What is a Conceptual Model?
A system is portrayed in a conceptual model. It consists of ideas that aid in knowing, comprehending, or simulating the subject the model portrays.
A variety must be stable for it to be a true explanation. When sugar is completely dissolved in water, it can stand without the sugar dissolving again for an unlimited period of time. In addition, the sugar will stay in the water if the sugar-water solution is filtered.
This is due to how tiny the liquefied particles are in a solution—they typically have a diameter of less than 1 nm. Depending on the type of nature that has been dissolved, solute particles might be particles, ions, or molecules.
Hence, option A is a scenario of a conceptual model
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Which scenario would be classified as a conceptual model?
A. A student thinks of bouncing balls as representing gas molecules.
B. Marshmallows and toothpicks are used to show the composition
of a water molecule.
C. A map and a map scale are used to represent a larger area of land.
D. A weather map shows different temperatures over most of the
United States.
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How can the motion of an object that is already moving change?
How can the motion of an object thatnis NOT moving change?
Answer:
"They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object"
"When a force acts on an object that is stationary or not moving, the force will cause the object to move, provided there are no other forces preventing that movement."
The answer to both questions is the same answer:
That can only happen if force acts on the object.
A penny is dropped from the top of a building 290 m high. Ignoring air resistance, if
the penny falls straight down, with what speed would it hit the ground?
Answer:
Vf = 75.4 m/s
Explanation:
In order to find the final velocity of the penny when it would hit the ground, we will use the equation of motion. In this particular case the third equation of motion can be used. The third equation of motion is written as follows:
2gh = Vf² - Vi²
where,
Vf = Final Velocity of the penny when it would hit the ground = ?
Vi = Initial Velocity of the penny = 0 m/s (Since, the penny starts from rest)
g = acceleration due to gravity = 9.8 m/s²
h = height of building = 290 m
Therefore,
2(9.8 m/s²)(290 m) = Vf² - (0 m/s)²
Vf = √(5684 m²/s²)
Vf = 75.4 m/s
find the resultant velocity of the motorboat traveling east at 10.00 m/s, if it encounters a current traveling north at 8.00 m/s.
Answer:12.80
Explanation:
It just is
Can a scientific ‘law’ change?
Answer:
Nope
Explanation:
Because take for example Newtons law
Which part of an atom is mostly empty space?
Answer:
The electron cloud is mostly empty space
Which statement is true?
Question 15 options:
Gravity is the force of resistance to a change in position. The greater the distance between two objects, the greater this force will be.
Gravity is a force that keeps objects moving in space. The less the object weighs, the further out in space gravity will pull the object.
Gravity is the force of attraction between two objects with mass and is dependent on the distance between these objects.
Gravity is the force that repels two objects that have opposite charges. It is dependent upon the charges of the objects.
Answer:
last one
Explanation:
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Why do you think false sciences are so widespread?
Answer:
The Internet (social media to be precise)
Explanation:
False science are purported scientific conclusions drawn without any scientific data or procedures followed to arrive at such conclusions. These purported conclusions would have been irrelevant or not widespread without the internet or social media but the easy accessibility to social media globally has made "everyone" to be a scientist or even a publisher without scientific steps.
Some innocent individuals also help share (on the internet) these false science because of the inability to differentiate between the real scientific process and the ones done without any/some due scientific processes hence assisting in promoting these false science unknowingly. If there were no internet, these false sciences would not be this widespread as information will not travel this fast.
You are on a rollercoaster going around a curve. Your speed is a constant 40 miles per hour. Are you accelerating?
A student will study german at last 3 years
Answer:
i don't understand
Explanation:
Why is a control group important?
A. It changes all the time, allowing us to see if the experimental group stays the same.
B. It is used to see if the experimental group causes a change.
Answer:
A. It changes all the time, allowing us to see if the experimental group stays the same.
control group mean the thing the stay the same during the Experiment.
I hope this help
I hope this is correct
Answer:
The correct answer is:
It is used to see if the experimental group causes a change.
Explanation:
I got this right on my Edpuzzle
Hope this helps : )
Tell me everything you have learned about the scientific method
Tell me
Answer:
observe question hypothesize test your theory analyze your data and report your results.
Explanation:
you have to do it in that order.
What is the power of an electric toothbrush if it can do 750 joules of work in 75 seconds?
Power = (work done) / (time to do the work)
Power = (750 joules) / (75 seconds)
Power = 10 joules/second
Power = 10 watts
iartz clock is more approp
time, why
1.
Group-C
Describe the importance of measurement in our daily life.
2.
Express newton and pascal in terms of fundamental units.
3.
How is the volume of an irregular solid measured? Explain.
Express watt and joule in terms of fundamental units.
Express the following numbers in the scientific notation.
i) 2000085000 ii) 0.000825 iii) 2000.82
Convert the following scientific notations into the general form.
i) 3 108
ii) 1.5 x 10-5 iii) 2.57 x 10-7
Convert the following:
i) 54 km into cm
ii) 2 mm² into m?
The volume of water in a measuring cylinder is 50 ml. When a piece of stone is in
in the cylinder, the volume of water increases to 87.3 ml. Calculate the volum
stone.
Group-D
[Ans: 37.3
Q3. the volume of an irregular solid can be measured by immersing it in water in a container that is calibrated or that has markings.you can see it on how the level of the water goes up.
Question 5 of 10
Which option is a potential environmental benefit of adopting a new
technology?
A. Increased research and development time
B. Preservation of habitat
C. Improved medical outcomes
D. Increased customer satisfaction
SUBMIT
Answer:
preservation of habitat
Explanation:
i just took the test
What is the environmental advantage of technology?
Renewable energy has enabled us to capture this naturally occurring energy and convert it into electricity or useful heat through devices such as solar panels, wind and water turbines, which reflects a highly positive impact of technology on the environment.
What are the impact of technology on environment?
The environmental impact of technology does not end with the raw materials and where they have come from.
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Physical Science Pre-Test 2020-2021 Question: 1-10 The distance between Earth and the Moon was determined by measuring the time it took for light waves from Earth to travel to the Moon and back. Why was it not possible to use sound waves for this experiment Sound waves must move through a substance Sound waves would change frequency on the return to Earth Sound waves move too slowly for the technique to be accurate Sound waves move more slowly in Earth's atmosphere than in space
Answer:
Option A - Sound waves must move through a substance
Explanation:
Unlike light waves, sound waves must travel through a medium/substance for such a medium to vibrate and then produce sound.
As a matter of fact sound can't travel through empty space.
Thus, looking at the options given, the correct one is:
Sound waves must move through a substance which is Option A
Need help on on number 2
Answer:
3 m/s
For every 1 second it moves 3 positions. Hope that helps!
Explanation:For every 1 second it moves 3 positions. Hope that helps!
tell me if it's right
22. Which unit of measure never is used in the International System of
Units?
inches
milliliters
grams
centimeters
Answer:
Inches
Explanation:
An inch is a unit of measurement in the Imperial system of measurement. Everything else is used in the International System of Units.
The unit of measure never is used in the International System of Units is inches. The correct option is A.
What is International System of Units?The International System of Units, abbreviated SI in all languages and sometimes pleonastically as the SI system, is the modern version of the metric system and the world's most widely used measurement system.
The International System of Units (SI), also known as the French Système International d'Unités, is a decimal international system of weights and measures derived from and expanding on the metric system of units.
The 11th General Conference on Weights and Measures adopted it in 1960, and it is abbreviated SI in all languages.
The International System of Units (SI) is a measurement system based on seven basic units: the metre (length), kilogram (mass), second (time), ampere (electric current), kelvin (temperature), mole (quantity), and candela. These base units can be combined with one another.
Thus, the correct option is A.
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7.
You run from your house to a friend's house that is 3 miles away in 30 minutes. You then
immediately walk home, taking 1 hour on your return trip.
Your House
Friend's House
West East
v=d/t
--
v=6mi = 7
-3 miles
a. What was the average speed (in mi/hr) for the entire trip? ,07
b. What was the average velocity (in mi/hr) for the entire trip?
Answer:
a. The average speed is 4 mi/hr
b. The average velocity is 0 mi/hr
Explanation:
a. The average speed is given by the following formula;
[tex]Average \ speed = \dfrac{Total \ Distance}{Total \ Time}[/tex]
The given information are;
The time it took for one friend to run to his friend's house = 30 minutes
The distance between the two houses = 3 miles
The time it took for the friend to walk home = 1 hour
Therefore, the distance the friend ran going to his friend's house = 3 miles and the distance the friend walked going back his house = 3 miles
The total distance travelled = 3 + 3 = 6 miles
The total time taken = 1 hour + 30 minutes = 1 hour 30 minutes = 1.5 hours
Therefore;
[tex]The \ average \ speed = \dfrac{Total \ Distance}{Total \ Time} = \dfrac{6 \ miles }{1.5 \ Hours} = 4 \ miles \ per \ hour[/tex]
The average speed for the entire trip = 4 mi/hr
b. The average velocity is the total change in position divided by the total time taken to make the change or total displacement divided by the total time for the displacement
Mathematically, average velocity is given as follows;
[tex]The \ average \ velocity = \dfrac{Final \ location - Initial \ location}{Time \ taken \ for \ the \ change \ in \ location}[/tex]
[tex]The \ average \ velocity = \dfrac{Total \ displacement}{Time \ taken \ for \ the \ change \ in \ location}[/tex]
[tex]The \ average \ velocity = \dfrac{Total \ change \ in \ location}{Time \ taken \ for \ the \ change \ in \ location}[/tex]
Given that the friend changed his location to his friend's house, a distance of 3 miles he we have;
Initial change in location of the friend = 3 miles
After which the friend then relocates back to his house (and we know that it is the same journey but in opposite direction, he we have;
Final change in location of the friend = -3 miles
We are given that he ran to his friend's house and walked back home in a total time of 1 hour + 30 minutes = 1.5 hours, therefore, we have;
[tex]The \ average \ velocity = \dfrac{Sum \ total \ of \ change \ in \ location}{Time \ taken \ for \ the \ change \ in \ location} = \dfrac{3 + (-3) }{1.5}[/tex]
[tex]The \ average \ velocity = \dfrac{3 \ miles + (-3) \ miles }{1.5} = \dfrac{0 \ miles }{1.5} = 0 \ mi/hr[/tex]
The average velocity = 0 mi/hr.
In the equation E = mc2, E stands for
Answer: energy=mc^2 is the answer
Answer:
E represents units of energy
Explanation:
where are the physics in football
Answer:
The branch of physics that is most relevant to football is mechanics, the study of motion and its causes.
Explanation:
When the ball leaves the punter's foot, it is moving with a given velocity (speed plus angle of direction) depending upon the force with which he kicks the ball. The ball moves in two directions, horizontally and vertically. Because the ball was launched at an angle, the velocity is divided into two pieces: a horizontal component and a vertical component.
what kind of electromagnetic radiation are being collected by the large bincular telescope
Answer:
Orbiting observatories have been launched to observe gamma rays (Compton Gamma Ray Observatory and Fermi Gamma-ray Space Telescope), X-rays (Chandra X-ray Observatory and XMM-Newton), ultraviolet radiation (International Ultraviolet Explorer and Far Ultraviolet Spectroscopic Explore
