What is the first law of gravity??
Answer:
every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Explanation:
pls help ASAP i have already failed this test once i cant fail it again
Answer:
Petrochemicals are a set of chemical compounds that fuel a wide array of products across the globe. They are made of hydrocarbons that are separated and extracted from petroleum (crude oil) and natural gas and are at the core of multiple industries, including: Cosmetics. Electronics. Packaging.
Answer:
B. I think Gasoline, natural gas, and diesel fuel
I'm truly sorry if it's wrong :(
Explanation:
If the wavelength of a wave stays the same and the speed doubles, what happens to the frequency of the wave?
Explanation:
velocity = wavelength × frequency => v= f1 × λ => f1 = v/ λ
λ = stays the same
v = doubles
2v = f2 × λ
2v/λ = f2
now ,
f2/f1= 2vλ/ vλ = 2
f2 = 2f1
therefore frequency is doubled
a 60m long train moving on a straight
level track passes a pole in 5 seconds. find the
speed of the train and the time it will take to cross a
540m long bridge.
Explanation:
part 1.
s=60m
t=5s
v=s/t. =60/5 =12m/s
part 2
total s= 540+60. =600m
v=12m/s
t=s/v. =600/12 =50s
Somebody please....
A girl drops a penny off a bridge. The penny lands in the water after 1.2 s. What is the speed of the penny just before it hits the water? Please write out the steps cause I have no idea how to do this!!
*if you post links i will report u so don't*
Answer:
Wait what is the distance of the water from the br
The speed of the penny drops of a bridge just before it hits the water is 11.76 ms⁻¹.
Given,
Time, t = 1.2 s
The initial velocity (u), final velocity (v), acceleration (a), displacement (s), and time (t) of an object traveling with constant acceleration are related by the first equation of motion, often known as the first kinematic equation or the equation of motion with constant acceleration.
From the first equation of motion:
v = u + at
Since the initial velocity is zero. The final velocity is:
v = at
v = (9.8 ) × (1.2 s)
v = 11.76 ms⁻¹
Hence, the speed of the penny drops of a bridge just before it hits the water is 11.76 ms⁻¹.
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The Voltmeter reads 16 V. The ammeter reads 0.25 A. The resistance must be
Answer:
64 ohms =R
Explanation:
R is directly proportional to V
R is inversely proportional to I(Current
what determines an atom identity
a. electrons
b. protons
c. neutrons
d. atomic mass
Answer:
atomic mass
Explanation:
the identify of the atom is determined by the number of protons
Whats a recent new discovery made in physics ? please add a link to the study if you can !
Answer:
Heres the link!
Explanation:
https://www.bbc.co.uk/news/science-environment-56491033
Answer:
here's the link you asked for: https://www.nyas.org/ebriefings/the-physics-of-everything/ and here's the info inside the link: During the second quarter of 2016, the Academy hosted a series of evening panel discussions boldly titled "." With grant support from The John Templeton Foundation, the six panels addressed how physics is addressing grand questions and the potential limitations on what we may be able to learn using physics to address those questions.
The first session posed the question "" Three physicists explored the frontiers of cosmology and quantum physics. There may always be limits to our understanding in areas such as string theory, dark matter, and multiverses. But the panelists agreed that it is best to proceed as if explanations based in physics can be found.
The second session asked "" The panelists argued that philosophy has much to offer physics, in contrast to the assertions of some prominent physicists. In such areas as the role of observations in quantum mechanics and the experimental validation of theory, the panelists illustrated the power of a critical, interdisciplinary approach to understanding not only the facts but the significance of physics ideas.
Physics has achieved its success in part by selecting problems that can be addressed by reducing them to simple parts following simple laws. Less amenable subjects were discussed in the third session, "" Biology, ecology, and social phenomena such as cities are all not easily described with simple equations, but still show amazing regularities. The panelists, including two physicists, a philosopher, and a computer scientist, sketched their hopes for unifying principles that explain these regularities.
One complex phenomenon that has so far evaded physical analysis was the topic of the fourth session, "." Two of the panelists, a neuroscientist and a roboticist, did not even regard consciousness as a distinct phenomenon but rather as a byproduct of systems that model themselves. In contrast, a philosopher and a physicist felt that this behavioral description misses something essential about what consciousness "feels like." Both groups expressed hope for experimental tests of their views.
The fifth session addressed the question, "" Recent experimental observations of thousands of planets orbiting other stars bolster the expectation that ours is not the first civilization. The panelists explored how we might look for others and why we have not encountered any yet. One troubling possibility is that civilizations that achieve global scale inevitably encounter challenges such as climate change that they fail to overcome.
The sixth session was entitled "." Two physicists and a computer scientist discussed amazing developments at the intersection of quantum gravity (as manifested in black holes) and quantum information. Trying to reconcile these disparate observations has overturned the traditional view of black holes, with no clear resolution so far. At the same time, an abstract connection between gravitational models and quantum models in one fewer dimension is providing insight into both fields, including new methods for error correction in quantum computing as well as benchtop tests of black hole physics.
The wide ranging discussions of the six panels illustrate the power of physics to explain the universe as well as the vast frontiers of that universe that still remain to be explored.
Explanation:
hope this helped plz give brainliest and rating ^_^
Which is NOT something that all green plants have in common?
1.They make their own food.
2. They reproduce.
3 .They grow.
4 .They produce flowers.
Answer:
4
Explanation:
Not all plants can grow flowers. Only the ones thay have buds can.
Not all plants produce flowers. Hence, this is the characteristic which is not common in all plants.Therefore, the correct option is 4.
What are flowers?Flowers are the structures of plants. They are responsible for producing seeds that will grow into new plants. Flowers typically consist of a colorful or ornamental part called the corolla, which attracts pollinators such as bees and butterflies, and a reproductive part called the stamen and pistil, which contain the plant's male and female organs.
Not all green plants produce flowers. Flowering plants are a type of plant that belong to the group Angiosperms, but there are also non-flowering plants like ferns and mosses that do not produce flowers. Therefore, the correct option is 4.
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Particles q1, 92, and q3 are in a straight line.
Particles q1 = -5.00 x 10-6 0,92 = -5.00 x 10-6 C,
and q3 = -5.00 x 10-6 C. Particles qı and q2 are
separated by 0.500 m. Particles q2 and q3 are
separated by 0.500 m. What is net force on q3?
Answer:
1.12
Explanation:
it is correct on Acellus
The total force on charge q(3) is 1125 x [tex]10^{-3}[/tex] Newton
We have three charges in a straight line.
We have to find the force on charge q3 due to charge q1 and q2.
State Coulomb's law.The force between two point charges is directly proportional to the product of the magnitude of two point charges and inversely proportional to the square of the distance between them. Mathematically-
[tex]F = \frac{1}{4\pi\epsilon_{o}}{\frac{qQ}{r^{2} } } }[/tex]
We have -
[tex]q_{1} =q_{2} =q_{3} = -5 \times 10^{-6} C[/tex]
The distance between -
[tex]q_{1}\;and\;q_{2} = q_{2} \;and\;q{3}[/tex] = 0.5 m
Now, Force on charge q(3) due to charge q(1) -
F(1 → 3) = [tex]\frac{1}{4\pi\epsilon_{o}}{\frac{5\times 10^{-6} \times 5\times 10^{-6} }{1^{2} } } } = 9\times 10^{9} \times 25 \times 10^{-12} = 225\times 10^{-3}[/tex] N (repelling force)
Force on charge q(3) due to charge q(2) can be calculate similarly as -
F(2 → 3) = 900 x [tex]10^{-3}[/tex] N(repelling force)
Now, both the forces are in same direction, so we can add them algebraically -
[tex]F_{net}[/tex] = F(1 → 3) + F(2 → 3) = 1125 x [tex]10^{-3}[/tex] N
Hence, the total force on charge q(3) is 1125 x [tex]10^{-3}[/tex] Newton
Hence, the wavelength of light in nano meters is 0.0177 x nm.
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Help me with this Bell Ringer / Answer Only / Ez 30 Points /
identifying the forces among the four particles in the Helium nucleus atom and explain why the nucleus stays together.
(Write a paragraph)
Explanation:
the forces among the four particles in the helium nucleus atom are strong, weak, electromagnetic and gravity
describe the shape of a screw
Answer:
The shape of a screw is a cylindric shape that grows in diameter at the top. Along the cylindar portion, it has horizantal ridges that circulate around the screw.
Hope this helps, brainliest pls :D
Light passes with an angle of incidence of 29.0 degrees from air (n = 1.00) into water
(n = 1.33). What is the angle of refraction?
how do i do the equation and whats the answer?
Explanation:
Light passes from air into water at an angle of incidence of 42.3∘.42.3∘. Determine the angle of refraction in the water.
An asteroid has a mean radius equal to 17 times that of Earth. Using Kepler's 3rd law find its period. T^2=a^3
Answer:
If T^2 = a^3
T1^2 / T2^2 = a1^3 / a2^3
Or T2^2 = T1^2 * ( a2^3 / a1^3)
Given T1 = 1 yr and a2 / a1 = 17
Then T2^2 = 1 * 17^3
or T2 = 70 yrs
I’m think 3 or 1.. am I right?
Answer:
C-3 I beleive it is three!!!!
Explanation:
Hope this helps!
Have a grreat day!
-Hailey
Answer:
it is n2+3
Explanation:
define the natural fibre
Natural fibers or natural fibres are fibers that are produced by plants, animals, and geological processes. They can be used as a component of composite materials, where the orientation of fibers impacts the properties. Natural fibers can also be matted into sheets to make paper or felt.
A bullet from a policeman's handgun travels at 200 meters per second and has a mass of 0.02 kg.
What is the bullet's kinetic energy?
Answer:
K.E = 400
Explanation:
Given the following data;
Mass = 0.02kg
Velocity = 200m/s
To find the kinetic energy;
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.
Substituting into the formula, we have;
[tex] K.E = \frac{1}{2}*0.02*200^{2}[/tex]
[tex] K.E = \frac{1}{2}*0.02*40000 [/tex]
[tex] K.E = 0.02*20000 [/tex]
K.E = 400
How can the power of an object required to lift a mass up a height be increased ?
A .reduce the height
B .reduce the mass
C .increase the time
D .reduce the time
The amswer should be B. reduce the mass
Horticulture 120 pts (HURRY)
Auto-steer technology is dependent on the use of
tracking relayed from satellites to receivers and transmitters in the farm equipment.
Answer: GPS
Explanation:
I took the test 2021
Answer:
okkkkkkkkkkkkkkkkkkkk
who discovered electricity
Answer:
Benjamin Franklin
Explanation:
sorry if wrong.
I don't know who it is surely.
Which of the following quantities is inversely proportional to the gravitational pull between two objects?
(A) The sum of their masses
(B)The sum of their volumes
(C) The square of the distance that separates them
(D) The distance from their center to their surface
Answer:
C
Explanation:
Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces
I hope this helps a little bit
The correct Option is :
=》(C) The square of the distance that separates them
[tex]f \: \: \dfrac{1}{ \alpha } \: \: r {}^{2} [/tex]where,
f = gravitational force
r = distance between the objects
Please help, I’m being timed! I will give brainliest!!!!!!!
Answer:
The Answer is gonna be A. It will speed up
Explanation :if it has the same velocity it will only change if the weight is less
This is the Answer
I hope I helped
I hope you are having a great day :3:3:3:3:3:3
Answer:
B
Explanation:
Why would it speed up if it is the same velocity??
It would stay at teh same speed. It would only increase if it weighed less.
can we detect em waves with our eyes?
tru or false
Explanation:
TRUE
Your eyes detect electromagnetic waves that are roughly the size of a virus. Your brain interprets the various energies of visible light as different colors, ranging from red to violet. ... On the other end of the spectrum are gamma rays, with wavelengths billions of times smaller than those of visible light
When plane waves cross a boundary at a non-zero angle to the boundary, each wavefront experiences a change in ........... and ............ .
Answer:
When plane waves cross a boundary at a non-zero angle to the boundary, each wavefront experiences a change in direction and wavelength
Explanation:
Waves that cross the boundary from one medium to another, that have different densities at an angle to the boundary between the two medium is refracted (bent) in the second medium and experiences a change in direction and speed due to a change in the wavelength of the wave
A sound wave is called a longitudinal wave? why?Give reason
Answer:
A sound wave is called a longitudinal wave because compressions and rarefactions in the air produce it. The air particles vibrate parallel to the direction of propagation.
Electricity and magnetism are? Regulated by one force with positive and negative charges Two separate forces Both of the above
Answer:
two separate forces
Explanation:
Electricity and magnetism are two separate forces. However, they come together in a field called electromagnetism. Both types of forces are linked; a moving magnet may push electric charges and trigger electric current. Objects which have both positive and negative charges are mutually repulsive to each other, and those with opposite charges are mutually attractive.
Gold atoms find their "birth" inside of huge _________.
Explanation:
he is very keen on taking up and is the age
the pulley is a uniform disk with a mass of 0.75 kg and a radius of 6.5
on between the 5.8 kg mass and the horizontal surface is 0.25, and the
The system is released from rest. Use work-energy principles to deter
2.8 kg mass and (b) the pulley after the 5.8 kg mass has moved 2.2 m
Answer:
please find the answer in the attached images , in 2 parts, btw thanks for so many points. i hope my answers are correct.
A 50 KG girl on a swing is pushed with a net force of 200 N. What is the girl’s acceleration?
Answer:
a = 4 m/s2
Explanation:
Given: 200 N, 50 kg
To find: a
Formula: [tex]A = \frac{f}{m}[/tex]
Solution: To find a, divide the force by the weight
A = F ÷ m
= 200 ÷ 50
= 4 m/s²
Newtons are derived units, equal to 1 kg-m/s². In other words, a single Newton is equal to the force needed to accelerate one kilogram one meter per second squared.
What will happen to the force felt between two charged objects if the distance between them is 1/3rd of the original distance
Answer:
New force = 9(initial force)
Explanation:
The force between two charges is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]
Where
d is the original distance
Let d' is the new distance such that, r' = r/3
New force,
[tex]F'=\dfrac{kq_1q_2}{r'^2}\\\\F'=\dfrac{kq_1q_2}{(\dfrac{r}{3})^2}\\\\F'=9\times \dfrac{kq_1q_2}{r^2}\\\\F'=9F[/tex]
So, the new force becomes 9 times the initial force.
