Answer:
In June 1783, Lavoisier reacted oxygen with inflammable air, obtaining "water in a very pure state." He correctly concluded that water was not an element.
Explanation:
As the fire left behind ashes of a substance it indicated that it is not an element as element cannot be decomposed in to simpler substances.
What is an element?It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.
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Describe the difference between uniform and non-uniform motion.
please put examples
Answer:
this is only there definition
Explanation:
☺️
A car begins from rest and accelerates at a rate of +3.0 m/s^2 for 5.0 seconds.
a. Determine the car's final speed.
b. Calculate the car's average speed during its trip
Answer:
a)15m/s
b)7.5m/s
Explanation:
a)use the formula for acceleration
b)calculate distance then calculate speed
A penny is made of the element zinc plated with the element copper; a nickel is made of a mixture of the elements nickel and copper. Some isotopes of various elements are listed below by their atomic number and mass number. Use the periodic table on p. 131 to identify which atoms you would expect to find in the penny, which you would expect to find in the nickel, which you would expect to find in both, and which you would expect to find in neither coin.
Answer: We need the referenced table to discern which isotopes are likely to be found. But there is still an interesting piece of information.
Explanation:
An interesting story behind the US penny. It has been around since 1787 and consisted of primarily a copper, or copper-plated coin. In 1982 the design was changed, due to the high price of copper. A zinc core was copper plated to have the same appearance, but less expensive composition. If one of these pennies is slightly filed to expose the zinc, it can be placed in a strong acid that will react with and dissolve the zinc core. Fun, but a waste of money.
Answer:
in the penny Cooper(Cu),un the nickel nickel(Ni),in both Cooper(Cu)
Explanation:
the apparent backward motion of a planet along the celestial sphere is called:
Answer:
retrograde
Explanation:
here's a pic of a slug
Newton's 3rd law is.
C. Force = Mass x Acceleration
B. An object in motion will stay in motion unless acted upon
A. For every action there is a reaction
state any two factors affecting pressure in liquids
Answer:
Density of liquid (ρ)
Depth of liquid (h)
Acceleration due to gravity (g)
Explanation: Pressure within a liquid depends only on the density of the liquid, the acceleration due to gravity, and the depth within the liquid.
Answer:
depth
height
acceleration due to gravity
Which of the following wavelengths of light from distant stars and other objects are
observable from the ground? (More than one may be observable)
(a) Ultraviolet (400 to 1 nm wavelength)
(b) Gamma-ray wavelength (0.001 nm and shorter wavelength)
(c) Visible (Optical) (700 to 400 nm wavelength)
(d) X-ray wavelength (1 to 0.001 nm wavelength)
(e) Near-infrared (10 ffm to 0.7 ffm wavelength)
(f) Long-wavelength radio (100 km to 10 m wavelength)
(g) Far- and mid-infrared (about 100 to 10 ffm wavelength)
(h) Intermediate-wavelength radio (10 m to 1 cm wavelength)
(i) Microwave radio (1 cm to about 100 ffm wavelength)
Answer:
its C
Explanation:
its (C)
PLEASE HELP ASAP(NO LINKS)
Answer:
I think the anwser is (C)
Explanation:
The table contains the planets in our solar system in order of their average distance from the Sun and their corresponding diameters. The first step in creating a model of the solar system is to scale these large diameters into smaller, more manageable numbers. Eventually, we’ll represent these numbers using circles drawn on paper. MercuryVenusEarthMarsJupiterSaturnUranusNeptune Diameter (km)487912,10412,7566792142,984120,53651,11849,528 Scaled Diameter (cm) 3.51.9 The ratio between Earth’s actual diameter and its scaled diameter can be used to find the scaled diameter of the other planets. Earth’s diameter of 12,756 kilometers is scaled to 3.5 centimeters as shown in the table. Now let’s find the scaled diameter of Mars as an example. Using the calculations shown, Mars’s diameter of 6,792 would be scaled to 1.9 centimeters. d × 12,756 = 6,792 × 3.5 d = 1.9 cm Use this same process to complete the table with the scaled diameters of the other planets. Round each answer to the tenths place. If you need additional math help, visit the Proportions section of the Math Review.
The scaled diameters of the missing planets are listed below:
Mercury 1.4 cm
Venus 3.3 cm
Mars 1.9 cm
Jupiter 39.2 cm
Saturn 33.1 cm
Uranus 14.0 cm
Neptune 13.6 cm
How to determine the scaled diameters of a planet
In this question we must use conversion factor to calculate the scaled diameters by means of the following direct relationship:
d = k · D (1)
Where:
D - Real diameter, in kilometers.d - Scaled diameter, in centimeters.k - Conversion factor, in centimeters per kilometer.The conversion factor is found by using the real and scaled diameter of the Earth:
k = 3.5 cm/12,756 km
k = 7/25512 cm/km
Then, we determine the scaled diameters of the rest of planets:
Mercury 1.4 cm
Venus 3.3 cm
Mars 1.9 cm
Jupiter 39.2 cm
Saturn 33.1 cm
Uranus 14.0 cm
Neptune 13.6 cm
Remark
The statement reports a table with numerous mistakes, the correct table is shown below:
Planet Diameter (km) Scaled Diameter (cm)
Mercury 4,879
Venus 12,104
Earth 12,756 3.5
Mars 6,792
Jupiter 142,984
Saturn 120,536
Uranus 51,118
Neptune 49,528
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Rebecca enjoys taking photos. Her father suggests that she study physical science to help improve her photography. How is physical science related to photography?
who is the target group of referred to or described in the text about gabu?
what do we mean by accretion in the context of planet formation?
WHAT FITNESS INJERIES ARE AMOUNG THE EASIEST TO AVIOD
Answer:
eye ,mouth,and,ears face
Answer:
knee, elbow, and wrist
Explanation:
What is the acceleration of a car that increases its velocity from 0 to 100 kilometers per hour in 10 seconds?
Answer:
0.00278 km/sec2 or 36,000 km/hr2 .
Explanation:
Information travels at 120 metres per second in neurones. Calculate the time it would take for the information to travel 2.3 m along a neurone. Give your answer in milliseconds.
Answer:
5 remainder 5
Explanation:
divide 120 by 2.3
To calculate the time it would take for information to travel a certain distance along a neuron, you can use the formula: Time = Distance / Speed.
Given that the information travels at 120 meters per second and the distance is 2.3 meters:
Time = 2.3 m / 120 m/s
Time ≈ 0.019167 seconds
To convert seconds to milliseconds, multiply by 1000:
Time in milliseconds ≈ 0.019167 s * 1000 ms/s ≈ 19.167 ms
So, it would take approximately 19.167 milliseconds for the information to travel 2.3 meters along a neuron.
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Which statement about a Ferris wheel is true?
a The input force is applied to the axle.
b The input force is less than the output force.
с The output distance is shorter than the input
distance.
Answer:the imput force is applied to the axle
Explanation:
why is the CMB in the microwave spectrum?
Answer:
The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang or the time when the universe began. As the theory goes, when the universe was born it underwent rapid inflation and expansion. ... Which means its radiation is most visible in the microwave part of the electromagnetic spectrum.
Explanation:
Hope this helps.
Consider two future observatories in space. Observatory X consists of a single 50-meter telescope. Observatory Y is an interferometer consisting of five 10-meter telescopes, spread out over a region 100 meters across. Which observatory can detect dimmer stars, and which one can see more detail in its images
The size and aperture of the telescopes determine its ability to gather light
and reveal details.
A) Observatory X can detect dimmer stars and Observatory Y reveals more
details.
Reasons:
The benefits of using several small telescopes included the production
high resolution images of bright objects such as binary stars that reveal
more details similar to a telescope with a very large aperture, with a
process known as interferometry, through which a star's diameter can be
determined.
The benefit of a large telescope is its ability to gather light from a source,
thereby making possible to detect a dim light source, such as dimmer
stars.
Therefore;
The single large telescope in observatory X can detect dimmer stars while
the interferometer consisting of five 10-meter telescopes, spread out over a
region 100 meters across can see more detail in its images.
The correct option is; A) Observatory X can detect dimmer stars and
Observatory Y reveals more details.
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Question options:
A) Observatory X can detect dimmer stars and Observatory Y reveals more
details.
B) Observatory Y can detect dimmer stars and Observatory X reveals more
details.
C) Observatory X both detect dimmer stars and reveals more details
D) Observatory Y both detect dimmer stars and reveals more details
how is the moon different during a new moon phase than during a lunar eclipse?
Answer:
because one the moon just resets and the other is a whole other thing
A ___________ will help you plan the rest of your life around this fitness priority. A. coach B. fitness goal C. fitness evaluation D. weekly plan
Answer:
B. fitness goal I believe. please like this, I need points. ty!
Explanation:
my friend and me are struggling help ussss
Explanation:
according to my sensation : its distance traveled is 24km and time is 6 days.
therefore, the speed is = 24km/6day = 4km/day.( first option)
hope this helps you.
What is the final velocity of a ball thrown downward at 10 m/s after 2 seconds?
We have that the final velocity of a ball thrown downward at 10 m/s after 2 seconds is
V=29.6m/s
From the question we are told
What is the final velocity of a ball thrown downward at 10 m/s after 2 seconds?
Where
a ball thrown downward at 10 m/safter 2 secondsGenerally the Newton's equation for Motion is mathematically given as
[tex]V=U+at\\\\V=U+gt\\\\V=10+9.8*2\\\\V=29.6m/s[/tex]
Therefore
the final velocity of a ball thrown downward at 10 m/s after 2 seconds is
V=29.6m/s
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How much time does it take the cheetah to travel 500 meters, if its average speed is 70 meters per second?
l=500m
speed=70m/s
t=?
t=500/70=7.14s
What is the force of a 13kg ball that has been dropped and has fallen for 1 second?
Answer:
127.4 newtons
Explanation:
Assuming g = 9.8:
F = ma = 13(9.8) = 127.4 N
The force of a 13 Kilogram ball that has been dropped and has fallen for 1 second, then the force offered by the ball would be 127.53 Newtons.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem we have to find the force of a 13-kilogram ball that has been dropped and has fallen for 1 second,
The force of the dropped ball = mass of the ball × acceleration due to gravity
The force of the dropped ball = 13 × 9.81
= 127.53 Newtons
Thus , the force of a 13kg ball that has been dropped and has fallen for 1 second would be 127.53 Newtons.
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The force between two point-charges of 0.040 C and 0.060 C separated by certain distance is 2.2 x 10^5 N. what is the distance between the charges?
A. 2.5m
B. 5m
C. 10m
D. 20m
Answer:
im in hardvard dont cheat and get good grades and become a graduate
it is c
Explanation:
Answer:
10m
Explanation:
how do the coils impact the strength of the magnetic fieldhow do the coils impact the strength of the magnetic field
46:13
Which of the scientists responsible for cell theory would be the most likely to write a book titled Cells Come from
Cells?
COM
Hooke
Schleiden
Virchow
Schwann
Save and Exit
Next
Submit
Mark this and return
Answer:
Virchow
Explanation:
Rudolf Virchow
Answer:
It is Rudolf Virchow! Hope this help and if I could get brainliest that would be much appreciated.
Explanation:
What are the characteristics of metals? *
Answer:
Good conducters of heat and electricity. High melting points. high density. malleable. Ductile.
Explanation:
Why aren't pads or helmets necessary in flag football?
Answer:
because it is not nesscery
Explanation:
A box of Thanksgiving presents slides across a waxy floor at 20m/s. It comes to a stop in 4 seconds. What distance did the box travel across the floor?
Answer:
V = d/t = 20
20=d/4 so d = 80