Water
Wood
Neon gas
Arrange the substances in the table from the MOST to the LEAST ordered particle arrangement
A)
wood, water, neon gas
B)
wood, neon gas, water
water, wood, neon gas
D
water, neon gas, wood
Answer:
I think the correct answer from the choices listed above is option A. The correct arrangement of the substances according to the most to the least ordered particle arrangement should be wood, water and neon gas. Wood should be the first since it is solid which has the most ordered structure as compared to the liquid and a gas. The neon gas is the last since as a gas it has the least ordered structure.
Answer:
A) wood, water, neon gas
Explanation:
wood, water, neon gas.
The particles of solids have an arrangement that is highly ordered and regular. Liquids have an arrangement that is less ordered, and the particle arrangement in gases is the least ordered and regular of the three states of matter.
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Ruben lifts a 125 Newton box up to the top of a shelf 2 meters high. How
much work (in Joules) did Ruben do?
Answer:
work = mgh = 125 × 2 = 250 joulesTo Mr. H's disgust, a .450 kg black crow is raiding the recently-filled bird feeder. As Mr.
H runs out the back door with his broom in an effort to scare the crow away, it pushes
off the .670-kg feeder with a takeoff speed of 1.5 m/s. Determine the speed at which the
feeder initially recoils backwards.
The correct answer is 2.51 m/s.
The principle of conservation of momentum states that an isolated system's total momentum will remain unchanged in the absence of an external force. In other words, momentum cannot be created or destroyed but can only be changed by the action of forces as they are described by Newton's laws of motion.
Momentum is the product of an item's mass and its speed, and it is also equivalent to the entire amount of force needed to bring an object to rest.
From the conservation of momentum,
[tex]m_1 u_1 + m_2 u_2 = ( m_1 + m_2 ) v[/tex]
Substitute the values, to get the required speed,
[ ( 0.45 ) ( 0 )] + [ ( 0.67 )([tex]u_2[/tex])] = ( 0.45 + 0.67 ) ( 1.5 )
[tex]u_2[/tex] = 2.51 m/s
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Please help me I swear will mark you brainiest
Answer:
C
Explanation:
please mark as brainliest
Please find the average of the following numbers
9,10,100,50,20
Answer:
Average: 22.142857142857
Average =
Sum
Count
=
155
7
= 22.142857142857
Sum 155
Count 7
Median 23
Geometric Mean 16.412764443111
Largest 38
Smallest 2
Range 36
Answer:
15.4
Explanation:
For an observer who stays in one spot when the source of a sound is moving,
the sound wave's:
OA. amplitude increases.
B. amplitude decreases.
OC. frequency changes.
OD. speed increases.
Answer:
Explanation:
The correct option of the given question will be option © that is frequency changes.
According to the Doppler Effect, when source is moving towards the observer then the frequency increases and when the source is moving away from the observer then the frequency decreases, but the magnitude of the amplitude in both the cases will remain same. Whereas the speed of sound waves will remain constant as it was earlier. According to this effect, when there is a relative motion between the source and the observer then there will be the change in the frequency.
So, the correct answer will be that the frequency changes.
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What are the 5 basic types of reactions?
Answer:
The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion
Explanation:
The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories
What is an effect of La Nina?
A.) Alaskan fish populations increase
B.) Flordia
C.) Fish populations off the coast of Peru decrease
D.) South American becomes dire than normal
Answer: D
Answer:
D.) South American becomes dire than normal
Explanation:
La Niña effect can be regarded as an effect that has impacts on the global climate, this effect bring about disruption in normal weather patterns, as a result of this intense storms as well as drought is experienced. The effect could be intense by worsening of above temperature. It bring an increases the probability of having a rainfall below normal. As a result of this
South American becomes dire than normal.
what is the speed of a car that travels a distance of 60 meters in a time of 10 seconds
Answer:
6m/s
Explanation:
A=d÷t
A=60÷10
6
you read in an astronomy book that our milky way galaxy consists of about 200 billion stars. how do you suppose this number was determined?
By utilising a galaxy model that accurately explains all of the data that has been collected thus far.
Is each star in a different galaxy a sun?In other words, while every star is a star, not every star is a Sun. Since the Sun is bigger than most stars, it is also more brighter. In our galaxy alone, there are billions of Suns, and as was already established, many of the stars we can see are Suns. However, a lot of what you see while gazing up into space is not a star.
The sizes of stars range from neutron stars, which can be about 12 miles (20 kilometres) across, to supergiants, which have a diameter that is 1,000 times larger than the sun. The brightness of a star is influenced by its size. Particularly, brightness and radius are related.
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A car weighs 3600 kg is traveling at 21. 0 m/s. The driver doesn?t notice a red light and rear-ends another car at rest. Both cars stick together and move with a speed of 9. 0 m/s. What is the mass of the car that was at rest?.
Answer:
[tex]4800\; {\rm kg}[/tex].
Explanation:
When an object of mass [tex]m[/tex] travels at a velocity of [tex]v[/tex], the momentum [tex]p[/tex] of that object would be [tex]p = m\, v[/tex].
Momentum is conserved immediately after the collision. Hence, the momentum that the [tex]3600\; {\rm kg}[/tex] vehicle lost in the collision would be equal to the momentum that the other vehicle has gained.
Momentum that the [tex]3600\; {\rm kg}[/tex] vehicle lost:
[tex]\begin{aligned}(\text{momentum change}) &= (\text{new momentum}) - (\text{original momentum}) \\ &= m\, v(\text{new}) - m\, v(\text{old}) \\ &= m\, (v(\text{new}) - v(\text{old})) \\ &= 3600\; {\rm kg} \, (9.0\; {\rm m\cdot s^{-1}} - 21.0\; {\rm m\cdot s^{-1}}) \\ &= (-43200)\; {\rm kg \cdot m \cdot s^{-1}}\end{aligned}[/tex].
The vehicle that was originally at rest would have gained that [tex]43200\; {\rm kg \cdot m\cdot s^{-1}}[/tex] of momentum. The momentum of that vehicle was [tex]0\; {\rm kg \cdot m \cdot s^{-1}}[/tex] before the collision since that vehicle was initially not moving. After gaining the [tex]43200\; {\rm kg \cdot m\cdot s^{-1}}\![/tex] of momentum, the new momentum of that vehicle would be [tex]p = 43200\; {\rm kg \cdot m\cdot s^{-1}}\!\![/tex].
Rearrange the equation [tex]p = m\, v[/tex] to obtain an expression for mass: [tex]m = (p / v)[/tex]. It is given that the velocity of this vehicle is [tex]v = 9.0\; {\rm m\cdot s^{-1}}[/tex] after the collision. Substitute both momentum [tex]p[/tex] and velocity [tex]v[/tex] into the equation [tex]m = (p / v)\![/tex] to find mass [tex]m\![/tex]:
[tex]\begin{aligned} p &= \frac{m}{v} \\ &= \frac{43200\; {\rm kg \cdot m \cdot s^{-1}}}{9.0\; {\rm m\cdot s^{-1}}} \\ &= 4800\; {\rm kg} \end{aligned}[/tex].
In other words, the mass of the vehicle that was originally not moving would be [tex]4800\; {\rm kg}[/tex].
rearrange Vf=Vi+at, rearrange for t
Answer:
[tex] \sf t = \dfrac{V_f - V_i}{a} [/tex]
Explanation:
[tex] \rm V_f = V_i + at \\ \rm V_f - V_i = at \\ \rm at = V_f - V_i \\ \rm t = \dfrac{V_f - V_i}{a} [/tex]
If an airplane accelerates at a constant rate of 3.0 m/s^2 starting with a velocity of 21 m/s, then what will its displacement be after 40s?
The displacement at a constant acceleration of 3.0[tex]m/s^{2}[/tex] is 526.5m.
Distance, which is a scalar quantity, describes "how much ground an object has covered" while moving. The term "how far out of place an object is" relates to displacement, a vector number that describes the total change in position of the object.
For constant acceleration, displacement is:
[tex]d = (\frac{1}{2} ) (\frac{v_{f}^{2} - v_{i} ^{2} }{a} )[/tex]
[tex]d = \frac{60^{2}-21^{2} }{2*3}[/tex]
[tex]d = \frac{3600-441}{6}[/tex]
[tex]d = \frac{3159}{6}[/tex]
d = 526.5m
Therefore, the displacement at a constant acceleration of 3.0[tex]m/s^{2}[/tex] is 526.5m.
The complete question is: An airplane accelerates with a constant rate of 3.0m/s^2 starting at a velocity of 21m/s. If the final velocity is 60m/s what is the displacement during this period?
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Using the rule-of-1 approach, what is the proportional change in centripetal acceleration, ac, for an object in a circular path when the tangential velocity is doubled? 2ac (doubles) 2 A sub c, (doubles) ac2 (halves) the fraction with numerator A sub c and denominator 2, (halves) ac4 (quarters) the fraction with numerator A sub c and denominator 4, (quarters) 4ac (quadruples)
Answer:
4ac (quadruples)
Explanation:
The general formula for centripetal acceleration is given as follows:
[tex]a_{c} = \frac{v^2}{r}\\\\[/tex] -------------- equation (1)
where,
ac = centripetal acceleration
v = tangential speed
r = radius of circular path
Now, if we double tangential speed, v' = 2v, then the acceleration will become:
[tex]a_{c}' = \frac{(2v)^2}{r}\\\\a_{c}' = \frac{4v^2}{r}[/tex]
using equation (1):
[tex]a_{c}' = 4a_{c}[/tex]
therefore, the correct answer is:
4ac (quadruples)
What is the gravitational potential energy of a wrecking ball that is hung 20 meters above the ground if it has a mass of 200 kg?
Answer:
The gravitational potential energy of the ball is 39,200 J
Explanation:
Gravitational Potential Energy
It is the energy stored in an object because of its vertical position or height in a gravitational field.
It can be calculated with the equation:
U=m.g.h
Where m is the mass of the object, h is the height with respect to a fixed reference, and g is the acceleration of gravity or [tex]9.8 m/s^2[/tex].
The wrecking ball is hung at a height of h=20 m and has a mass of m=200 Kg. Substituting in the formula:
U=200*9.8*20
U = 39,200 J
The gravitational potential energy of the ball is 39,200 J
26 POINTS!! will give brailest! can anyone help me? if you can't well, Merry Christmas!
Have an amazing day you are an amazing person:)
can you please answer theese two qeastion
The first one is C!
I hope the answer helped! please mark brainliest and vote 5 stars! >:)
Because most particles fired at metal foil passed straight through, rutherford concluded that.
Because most particles fired at metal foil passed straight through, Rutherford concluded that only a small area of an atom is positively charged called the nucleus.
Rutherford's atomic model states that the atom is a small-sized particle that is composed of other fundamental objects i.e. electrons, protons, and neutrons.
In the core of an atom, there is an extremely dense, tiny-sized object called the nucleus which is positively charged.
Moreover, the nucleus is the central point containing all the mass of an atom around which negatively charged particles revolve in circular paths called electrons.
To put it simply, this model suggests that when electrons interacted with atoms in gold metal foil, only a few changed their path after colliding with the massive dense nucleus.
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does anyone know any sites that you can use for physics for like homework
Answer:
the app your on now is great and can ask anything
pls solve this numerical.
Answer:
You should write the vectors in their proper sequence: i , j, k
If the vectors are perpendicular their dot product must be zero:
1) A dot B is obviously zero since A and B have no common terms in i , j , k
2) looks like A = 2 i - 4 j + 3 k and B = i + 2 j + 2 k
A dot B = (2 * 1) + (-4 * 2) + (3 * 2) = 0
Note that the dot product produces a scalar with no direction (vector components)
Only i dot i, j dot j, and k dot k have components i dot j = zero, etc.
The si unit of mass is the Newton. True or false.
explain how a fire alarm work
Answer:
Smoke alarms detect fires by sensing small particles in the air using a couple of different kinds of technologies. Once they detect those particles above a certain threshold, they signal the alarm to sound so that you and your family can get to safety and call 911. Smoke alarms save lives.
Justin is a triathlete it takes him 28 minutes to finish the 1500 meter swim. 1.75 hours for the 40 milometer biking portion and 70 minutes for the 10 kilometer run. what is Justin's average speed for the triathlon?
Justin's average speed for the triathlon is 15.23km/h
Average speed is the total distance covered in total time taken.
(given) 28 minutes to finish the 1500 meter swim
1.75 hours for the 40 kilometer biking portion
70 minutes for the 10 kilometer run
total distance covered = 1500m + 40 km+ 10 km
= 51500m = 51.500km
(1km = 1000m)
total time taken = 28mint + 1.75hr + 70 mint
= 203mint
time in hours = 203/60 hr
(1hour = 60 mint)
average speed = total distance covered / time taken
= 51.5 x 203/60
= 15.23km/h
Justin's average speed for the triathlon is 15.23km/h
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A player hits a ball with a bat. The action is the force of the bat against the ball.
What is the reaction to this force?
Answer: Newton's third law of motion states that for every action, there is an equal and opposite reaction. When a player hits a ball with a bat, the force the player exerted on the ball through the bat gave the ball a push force in the forward direction.
Explanation:
During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.06 s, how high above the point where it hits the bat does it rise? Assume when it hits the ground it hits at exactly the level of the bat. The acceleration of gravity is 9.8 m/s 2 .
The height of the point where it hits the ball is 20.171 m.
When a batter hits a ball high in a baseball game,
Time till the ball remains in the air, t = 4.06 seconds.
The acceleration of gravity, g = 9.8 m/s².
The vertex value of time is half of the time, the ball remains in the air
i.e. [tex]\frac{4.06}{2}[/tex] = 2.03 s
Final velocity (v) at the maximum height will be 0
So, According to the First Equation of Motion:
v - u = gt
u = - gt
u = -9.8 × 2.03
u = -19.894 m/s
Now, by using the Second Equation of Motion:
v² - u² = 2gh
Since v = 0
[tex]h = \frac{u^{2} }{2g}[/tex]
h = [tex]\frac{19.894^{2} }{2 * 9.81}[/tex]
h = 20.171 m
The ball will rise 20.171 meter high.
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how many laws are named after sir issac newton
Answer:
Three Laws
Newton's Three Laws of Motion. Sir Isaac Newton: The Universal Law of Gravitation. Sir Isaac Newton and the Unification of Physics & Astronomy.
Explanation:
Which characteristic of water quality provides the most information regarding the health of a water system? *
A clarity
B temperature
C concentration of heavy metals
D presence of indicator species
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In order to move a bag of dog food across a 10 meter room, you apply 20 newton’s of force. How much work was done?
A. 2 joules
B. 10 joules
C. 30 joules
D. 200 joules
The answer is 200 joules.
Answer:
Its answer is 200joule.
Explanation:
Hope it's helpful for you
a student is rotating an object on a row that is 4.5 M long if we increase the length of the Rope so that the student rotates and uniform circular motion with the mass rotating 9.0 M away from the center of the rotation 2x farther what will be the effect of the tangential velocity for the athlete if we keep the time for one Revolution the same
Answer:
is there any options
Explanation:
4) What amount of energy is radiated by the sun per second
Answer:
"The sun releases energy at a mass–energy conversion rate of 4.26 million metric tons per second, which produces the equivalent of 384.6 septillion watts (3.846×1026 W)."
Explanation:
This might help you, also this is searched.