When oxygen reacts with sodium, the electrons move from the sodium atoms to the oxygen atoms which is denoted as option B.
What is Ionic bonding?This is referred to as electrovalent bonding and usually occurs between a metal and non metal.
The metal in this scenario is Sodium which loses electron to the non metal which is oxygen to become positively charged.
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find the solution to the system of equations down below
x+y+z=-1
x-y+z=-1
x+y-z=3
A) (-2,4,-3)
B) (1/2,0,1/2)
C) (1,0,-2)
D)3/2,3/2,0)
C.
1,0,-2
you solve by substitution
x=1
y=0
z= -2
The Port Authority is thinking about dredging the harbor to make it deeper for large ships. Before they do this, they hire a team of environmental scientists and engineers to study the impact of this project. Which statement best explains why this study is important?
Out of the following given choices;
A) It is always difficult to get a project like this approved. This study will help them convince the local community to support the project.
B) If they do not perform the study, and there is a problem during the dredging project, the media could make them look bad.
C)The study will weigh the benefits against the negative impacts so an informed decision can be made.
D)The study will demonstrate the local government's concern for the community's safety.
The answer is; C
Dredging can have a negative impact on the marine environment. Destruction of this ecosystem could have reverberating effects that affect the communities that rely on this ecosystem for livelihoods, such as fishermen. An environmental and feasibility study will help weigh the benefits and demerits of the project and allow for an informed decision to be made.
Answer:
I believe the answer Is C
Explanation:
I got it right on my test
do you think companies should be required to disclose ingredients in their chemicals if there are environmental concerns? Explain why or why not ? Use at least 3 pieces of evidence
Answer:
Yes, chemical companies should be required to disclose ingredients in their chemicals, if there are environmental concerns.
A chemical engineer must understand the field of environmental laws for theses reasons.
1. The chemical engineers must perform affirmative duties, otherwise the chemical engineers and their firms may be held civilly or criminally liable.
2. The chemical company must communicate with environmental law professionals to know about environmental laws and regulations.
3. The chemical company must understand environmental laws and regulations to allow the chemical engineers to lobby for more effective laws and regulations in the future.
During the first 5 seconds of a rocket launch, the momentum of the rocket increased by 10,000 kg m/s. What was the impulse applied to the rocket during this time?
Answer:
10,000 kg m/s
Explanation:
The impulse exerted on an object is equal to the change in momentum of the object itself:
[tex]I=F \Delta t = \Delta p[/tex]
where
I is the impulse
F is the force applied
[tex]\Delta t[/tex] is the time during which the force has been applied
[tex]\Delta p[/tex] is the change in momentum
In this problem, we are already given the change in momentum of the rocket: since the rocket starts from rest, its change in momentum is equal to its momentum after 5 seconds,
[tex]\Delta p = 10,000 kg m/s[/tex]
and so, the impulse is equal to this value.
Final answer:
The impulse applied to the rocket during the first 5 seconds of its launch, which resulted in a momentum increase of 10,000 kg m/s, is equal to 10,000 kg m/s, as impulse is directly equivalent to the change in momentum.
Explanation:
The question involves the concept of impulse in physics, which relates to the change in momentum of an object when a force is applied over a period of time. In the scenario provided, the rocket's momentum increased by 10,000 kg m/s over the first 5 seconds of the launch. By definition, the impulse applied to the rocket is equal to the change in momentum, which in this case is also 10,000 kg m/s. Since impulse (J) is equal to the product of the force (F) and the time interval (δ) during which the force is applied, we can express the formula as J = Fδt. Because the momentum change is given for a specified time interval (the first 5 seconds), the impulse can be directly calculated without needing to determine the specific force values at each moment during that period.
Many military submarines are powered by on-board nuclear reactors. This type of energy source is favored because A. They can be converted into nuclear weapons at a moment's notice for use in wartime B. They can be easily replenished even when the submarine is submerged in deep waters C. They supply a lot of energy but do not take up a lot of space D. They are 100% efficient and do not produce any form of waste
The answer is; C
Nuclear reactors are small and lightweight (ratio of size to power generated) and provide energy reliably compared to other sources. They can carry their own weight by many folds ration. This is why they are also muted as the ideal source of energy in space exploration.
A suitcase had a width of 55 cm. Which unit conversion fraction should you use to find the width in inches?
A. 1 cm/2.54 in
B. 1 in/2.54 cm
C. 2.54 cm/1 in
D. 1 in/1 cm
The answer is B.
When you multiply 55 cm by 1in/2.54 cm, the unit cm cancels leaving only in.
55 cm is thus 21.654 in.
Answer:
B. [tex]\frac{1 in}{2.54 cm}[/tex]
Explanation:
Two teams are playing tug of war. The team on the right side is pulling with a force of 4332 N. The team on the left is pulling with a force of 4251 N. What direction will the rope move and why?
18PTS
The rope will pull to the right side. This will happen because the force of the right team is higher (4332 N) than the team on the left (4251 N). And if they need it the extra force would be 81 to the right.
What is similar for elements located next to one another anywhere on the periodic table?
a. chemical characteristics
b. physical state
c. mass
d. reactivity with oxygen
the answer is mass AND CAN BE SEEN IF YOU STUDY PERIODIC TABLE
Answer:
c. mass
Explanation:
Chemical elements placed in a tabular form according to their atomic number is known as periodic table.
The elements located next to one another in a periodic table have similar mass. In a period, the mass number of adjacent element varies by very few atomic mass. For example, Potassium and calcium are placed adjacent to each other. Potassium has atomic mass: 39.10 u and calcium has 40.08 u. Similarly, Vanadium has atomic mass 50.94 u and Chromium has atomic mas 52.00 u lie adjacent to each other.
Gina has brown eyes. Her mother also has brown eyes, but her father has blue eyes. Most of the people in Gina's town have brown eyes. Gina most likely inherited brown eyes from _______.
Her mom's dominant brown eye genes.
Answer:
her mother
Explanation:
If an atom has two electrons outside of its nucleus, what number of protons and neutrons must be contained in the nucleus to result in a neutral atom
Answer: 2 protons and 2 neutrons.
Explanation: this means that it contains 2 negatively charged elections and 2 positively charged protons which cancels each other to make the atom electrically neutral.
How does the law of conservation of energy apply to the transformation of various forms of energy? Explain with examples.
Its meaning that energy cant be created or destroyed it can be transformed or transferred to one form to the other.
water is stored to height with potential energy the water flows and is its potential energy becomes kinetic energy
Answer:
Explanation:
Law of conservation of energy states that energy can neither be created nor destroyed but it can be transformed from one form to another. This law suggests that energy is transformed from one form to another but not created neither is it destroyed. Examples of the forms of energy include mechanical energy, sound energy, nuclear energy, thermal energy, chemical energy and radiant energy
For example, chemical energy is transformed into electrical energy in an electrochemical cell. Here, chemicals are used to generate electricity through a spontaneous redox reaction.
Also, mechanical energy is transformed into sound energy in a guitar. Here, the fingers slides through the strings (mechanical energy) to produce sound (sound energy).
Energy is also transformed from chemical energy into thermal energy. Exothermic reactions for instance causes chemical energy to be transformed into thermal energy. Examples of such reactions include combustion reaction and neutralization reaction.
From the above, it can be deduced that energy is indeed transformed from one form into another form.
NOTE: There are other examples involving the transformation of energy from one form to another
What is the centripetal acceleration of a small Laboratory Centrifuge in which the tip of the test tube is moving at 19.0 meters per second in a circle with a radius of 10.0 cm
Answer:
3610 m/s^2
Explanation:
The centripetal acceleration of the tip of the test tube is given by:
[tex]a=\frac{v^2}{r}[/tex]
where
v = 19.0 m/s is the velocity of the tip
r = 10.0 cm = 0.1 m is the radius of the circular trajectory of the tip
Substituting the numbers into the formula, we find
[tex]a=\frac{(19.0 m/s)^2}{0.1 m}=3610 m/s^2[/tex]
A 50- kilogram student stands on the surface of the earth. what is the magnitude of the gravitational force of the eart
Answer:
490 N
Explanation:
The magnitude of the gravitational force acting on an object on the surface of the Earth is given by:
[tex]F=mg[/tex]
where
m is the mass of the object
g = 9.8 m/s^2 is the acceleration due to gravity
In this problem, we have a student with mass m=50 kg, so the force of gravity in this case is
[tex]F=(50 kg)(9.8 m/s^2)=490 N[/tex]
The graph below shows the downloads of two songs over time. Which term describes the slope of the graph of song 2 between minute 14 and minute 15?
A. Negative
B. Zero
C. It is impossible to calculate
D. Positive
Answer:
B. Zero
Explanation:
Here the number of downloads between minute 14 and minute 15 is 3000. The number does not increase or decrease so the slope is zero.
The slope of line between two points (x₁, y₁) and (x₂, y₂) is given by
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Here,
[tex]m=\frac{30-30}{15-14}\\\Rightarrow m=\frac{0}{1}=0[/tex]
The slope of a function is given by the differential of the function.
During a race, a dragster is 200m from the finish line when something goes wrong and it stops accelerating. It travels at a constant velocity of 45 m/s for 3 seconds to try to finish the race. How far from the finish line is the dragster after 3 seconds?
Answer:
135 m
Explanation:
Speed = 45 m/s, time = 3 second
The formula for the distance is given by
Distance = speed x time = 45 x 3 = 135 m
What is evidence that the earth rotates on its axis?
How long does it take earth to rotate on its axis?
The South Pole is the other point where Earth's axis of rotation intersects its surface, in Antarctica. Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes, and 4 seconds with respect to the stars (see below).
Answer:
is 365 days. Because that will equal a year and when the sun goes around the earth one whole time it will be in a year.
Explanation:
i just did a teat, and im smart
A 500n person stands in an elevator that is moving downward at a constant speed. The force that the floor exerts on the person must be
Answer:
Explanation:
Acceleration of the person is same as the acceleration of the elevator
So here when elevator is moving at uniform velocity so we can say that acceleration of the elevator will be zero
so net force on the person must be zero as per Newton's 2nd law
[tex]F_{net} = ma[/tex]
so here force on the person is given as
[tex]F_n - mg = ma[/tex]
here we have
[tex]a = 0[/tex]
[tex]F_n = mg [/tex]
as we know that
[tex]mg = 500 N[/tex]
[tex]F_n = 500 N[/tex]
so the floor will exert 500 N force on man
Which tool to study space is the LEAST expensive? A) satellite B) space probe C) ground-based telescope D) human space exploration
Answer:
C ground -based telescope
Explanation:
Sandra moves 14 m in 2 minutes. What is Sandra’s average velocity (in m/s)?
Yes but I'm not getting any answer that is listed. What section are you in? Is the motion something I'm unaware of?
Givens
d = 14 m
t = 2 * 60 = 120 seconds
Solution
d = r*t
14 m = r * 120 seconds
r = 14 / 120
r = 0.117 m/s
That m must mean something I'm not seeing.
Why is it important to break down a long-term physical fitness goals into short-term physical fitness goals?
In order to maintain motivation, so that you don’t quit later on
A force of 1 newton will cause a mass of 1 kg to have an acceleration of 1 m/s^2. If a force of 5 newtons is applied to a mass of 5 kg, what will be its acceleration?
A.) 1 m/s^2
B.) 25 m/s^2
C.) 5 m/s^2
D.) 0.20 m/s^2
For any force and any mass, the acceleration is always
(the strength of the force) divided by (the mass) .
If a force of 5 newtons is applied to a mass of 5 kg, the acceleration will be
(5 Newtons) / (5 kg) = 1 m/s²
Final answer:
When a force of 5 newtons is applied to a mass of 5 kg, the acceleration is A.) 1 m/s², as per Newton's second law. This is obtained using the formula a = F/m.
Explanation:
The question is asking us to calculate the acceleration of a mass when a certain force is applied to it. According to Newton's second law of motion, the force applied to an object (F) is equal to the mass of the object (m) multiplied by the acceleration of the object (a), which can be expressed with the equation F = m * a.
Using this equation, if a force of 5 newtons is applied to a mass of 5 kg, the acceleration (a) can be calculated as follows: a = F/m = 5 N / 5 kg. Therefore, the acceleration would be 1 m/s², which corresponds to option A.) 1 m/s²
Increase in a body of water's temperature caused by adding warmer water is called ______. A. Thermal pollution c. Convection b. Specific heat d. Thermal warming Please select the best answer from the choices provided A B C D
Increasing the water temperature by adding hot water is called thermal heating, so the correct answer is d)
Answer: Thermal pollution
Explanation:
Thermal pollution is defined as rise in the temperature of the water body in which hot water is added. It degrades the quality of water due to any process which changes the ambient temperature of water.
This is mainly caused due to water used as coolant in the power plants which is released into the nearby water bodies.
Thus, increase in the temperature of water body due to addition of warmer water is known as thermal pollution.
The force on an object is given by the equation F = ma. In this equation, F is the force, m is the mass, and a is the acceleration. Which answer shows this equation solved for mass?
A. m = Fa
B. m = m/F
C. m = a/F
D. m = F/a
I cannot eliminate B by any method but to say that you cannot manufacture an extra m in an equation. So B is wrong.
The original equation is F = m * aif you want m by itself, you must divide both sides of the equation by aF/a = m*a/a Do the divisionF/a = m the "a"s cancel.So D turns out to be the answer.C divides only once side by F. It is an unbalanced operation
A does some sort of mathematical slight of hand. Good for magicians, bad for physics students. I don't know how A is justified. It's just wrong.
D <<< Answer
In order to determine mass, you would need to isolate m, in other words keep it alone (m =). However, it can be quite tricky at first glance to do this. Simply divide A by both sides to isolate the m.
F = Ma
M needs to be isolated.
Divide A by both sides to isolate M.
F/a = m
M = F/a
Answer:
D. m= F/a
Linus builds an electrical circuit with a battery and with wires that carry the current. As the battery weakens, the current also weakens. How does this affect the magnetic field around the wires?
A. The field gets stronger.
B. The field gets weaker.
C. The field changes direction.
D. The field disappears completely.
Answer: The correct answer is option (B).
Explanation:
The current carrying wire produces the magnetic field around it. More the current in the wire, stronger will be the magnetic strength around the wire. The magnetic field is stronger near this wire.
The direction of the magnetic field depends on the direction of the current.
In the given problem, Linus builds an electrical circuit with a battery and with wires that carry the current.The strength of the magnetic field depends on the amount of current flowing in the wire. As the battery weakens, the current also weakens.
Therefore, the magnetic field around the wires is weaker.
The magnetic field getting weaker is the correct answer when Linus builds an electrical circuit with a battery and with wires that carry the current. The correct answer is (B).
The strength of the magnetic field around the wires is directly proportional to the current flowing through the wires. As the battery weakens and the current decreases, the magnetic field strength around the wires also decreases.
Conversely, if the current increases, the magnetic field strength increases. This relationship is described by Ampere's law and the right-hand rule, which state that the magnetic field is directly proportional to the current.
Therefore, The correct answer is (B). The magnetic field getting weaker is the correct answer.
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Since prehistoric times what has been the correlation between atmospheric carbon dioxide level and global temperature
Carbon dioxide is a green house gas. It absorbs the radiated temperature from earth and keep that hot condition in the atmosphere. Thus, an increase in carbon dioxide increases the global temperature.
What is global warming?Global warming is the phenomenon of warming up of earth's surface caused by the industrial gases evolution and some human activities. Global warming is serious issue facing all over the world because its consequences are risks to the ecosystems.
The major cause of global warming is the increased level of green house gases in the atmosphere. Gases such as carbon dioxide, methane, oxides of nitrogen and sulphur etc. are called green house gases capable of intensely absorbing the temperature.
Burning of fossil fuels release carbon dioxide and hazardous hydrocarbons radiates heat energy into the earth's surface and make it warmer. Increased level of these gases results in global warming.
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The correlation between atmospheric CO2 levels and global temperature is a key aspect of Earth's climate system, and understanding this relationship is crucial for predicting and mitigating the effects of future climate change.
The correlation between atmospheric carbon dioxide (CO2) levels and global temperature has been well-documented since prehistoric times through the study of ice cores, sediment layers, and other geological records.
These studies have shown that there is a strong positive correlation between the two: as CO2 levels increase, global temperatures tend to rise, and vice versa.
The mechanism behind this correlation is the greenhouse effect. Carbon dioxide is a greenhouse gas, which means it has the ability to trap heat in the Earth's atmosphere.
Ice core samples from Antarctica, for example, have provided a detailed record of atmospheric CO2 concentrations and temperature changes over the past 800,000 years.
These samples show that during glacial periods, when the Earth was much colder, CO2 levels were lower, typically around 180-200 parts per million (ppm). In contrast, during interglacial periods, when the Earth was warmer, CO2 levels were higher, around 280-300 ppm.
A 0.500-kilogram cart traveling to the right on a horizontal, frictionless surface at 2.20 meters per second collides head on with a 0.800-kilogram cart moving to the left at 1.10 meters per second. What is the magnitude ofthe total momentum of the two-cart system after the collision?
Consider the motion towards right as positive and motion towards left as negative.
m₁ = mass of the cart moving to right = 0.500 kg
v₁ = initial velocity before collision of the cart moving towards right = 2.2 m/s
m₂ = mass of cart moving to left = 0.800 kg
v₂ = initial velocity before collision of the cart moving towards left = - 1.1 m/s
initial momentum of the system of carts before the collision is given as
P₁ = m₁ v₁ + m₂ v₂
P₁ = (0.500) (2.2) + (0.800) (- 1.1)
P₁ = 0.22 kg m/s
P₂ = momentum of system of carts after collision
As per conservation of momentum,
Momentum of system of carts after collision = Momentum of system of carts before collision
P₂ = P₁
P₂ = 0.22 kg m/s
The final momentum of the system before the collision is 1.02 kg-m/s.
Given data:
The mass of first cart is, m = 0.500 kg.
The initial velocity of first cart before collision is, u = 2.20 m/s.
The mass of another cart is, m' =0.800 kg.
The initial velocity of second cart before collision is, u' = -1.10 m/s. (Negative sign shows the opposite direction)
Use the conservation of linear momentum, which says that momentum of a system before collision is equal to the momentum of the system after the collision.
Total momentum before collision = Total momentum after collision
[tex]P_{i} = P_{f}\\\\mu+m'u' = P_{f}\\\\P_{f}=(0.500 \times 2.20)+(0.800 \times -0.100)\\\\P_{f}=1.02 \;\rm kg-m/s[/tex]
Thus, we can conclude that the final momentum of the system before the collision is 1.02 kg-m/s.
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Beth exerts 14 N of force to propel a 4.5 kg bowling ball down the lane. Describe how the ball will travel
It will have a certain kinetic energy at the beginning, but it will be lost by resistant work done by friction. Thus, itsmotion wil be uniformly decelerating.
The ball will accelerate at a rate of 3.11 m/s² and the ball will travel an accelerated motion.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. The Newton is the SI unit of force.
Given parameters:
Mass of the ball: m = 4.5 kg.
Force exerted on it: F = 14 N.
From Newton's second law of motion: it can be written that:
Applied force = mass of the object × acceleration of the object
acceleration = force/mass
= 14 N/4.5 kg
= 3.11 m/s².
Hence, the ball will accelerate at a rate of 3.11 m/s² and the ball will travel an accelerated motion.
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Arsine, ash3 is a highly toxic compound used in the electronics industry for the production of semiconductors. its vapor pressure is 35 torr at – 111.95°c and 253 torr at – 83.6°c. using these data calculate
Answer: a. 17.7 KJ/Mol
b. T=210K
Explanation:
Arsine, ash3 is a highly toxic compound used in the electronics industry for the production of semiconductors. its vapor pressure is 35 torr at – 111.95°c and 253 torr at – 83.6°c. using these data calculate.
the question isnt completely originally, but we could look at the likely derivation from the questions
(a) the standard enthalpy of vaporization
using the clausius clapeyron equation
In (PT1vap / PT2vap) = delta H (vap) / R ( (1/T1) - (1/T2) )
In (35Torr/253Torr) = delta H (vap) / 8.3145 ( (1/189.55) - (1/161.2) )
Therefore, Delta H (vap) = 17.7 KJ/Mol
b. Also the boiling point
What is the normal boiling point of arsine?
At the boiling point Pvap = atmospheric pressure = 1 atm=760 torr
substitution into the equation as stated in question 1
ln(760/253)=17700/8.314(1/189.55-1/T)
T=210K
The Clausius-Clapeyron equation is used to calculate unknown factors of the vapor pressure of arsenic. The equation is resolved using the provided pressure and temperature measurements. The result yields the enthalpy of vaporization for Arsine, a compound commonly used in the electronics industry for its ability to donate extra electrons to semiconductor conduction bands.
Explanation:To calculate unknowns using the provided data about the vapor pressure of arsenic, you can use the Clausius-Clapeyron equation, which is a logarithmic form of ideal gas law. The equation is ln(P2/P1) = -ΔHvap/R (1/T2 - 1/T1), where P1 and P2 are the known pressures, T1 and T2 are the absolute temperatures associated with these pressures, and ΔHvap is the enthalpy of vaporization we are trying to find. We just convert the given temperatures from Celsius to Kelvin by adding 273.15 and subtract them in the equation above. After solving it, the result gives you the enthalpy of vaporization. Note that Arsenides, like Arsine (AsH3), often exhibit oxidation states of either 3+ or 3- and are used in the electronics industry as they can donate any extra electrons to the semiconductor's conduction band, thus assisting in charge conduction.
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The collision of the deep impact probe with the nucleus of comet tempel 1 in 2005 revealed the nucleus as a rubble pile held together by
Answer
correct Answer is gravitation
Explanation
In 2005, collision of deep impact probe with the nucleus of comet tempel 1 was carried out. In this probe the length of Tempel 1's nucleus was about 5km long. In this probe it was revealed that the nucleus behave as a rubble pile which is held together by gravitation.
In this probe speed of Tempel 1 which is moving towards the nucleus was 10km/s. In this probe series of images was recorded and cloud of debris was analyzed,It was discovered that comet is made up of a primordial chunk of solar system material. It was observed that Tempel 1's has tiny grains of silicates, iron compounds, complex hydrocarbons, and clay and carbonates thought to require liquid water to form it was more appropriate for a cosmic souffle, as the nucleus is apparently porous and fluffy.
Answer:
Self Gravity
Explanation:
Tempel 1 is a periodic Jupiter-family comet discovered in 1867 by Wilhelm Tempel which is where it got its name from.It takes 5.5 years for it to complete an orbit of the Sun.
After the probe of the collision which took place in 2005, it was discovered that the comet was held together only by self-gravity rather than by structural bonds between the cometary particles themselves.
20 points, just need a basic understanding. You are on a mystery planet, what you know is that from a height of 10.0 meters, a dropped ball takes 0.88 seconds to hit the ground.
a. List givens
b. Calculate g
c. Determine the final velocity of the ball before striking the ground.
(since you asked for basic understanding only, I am not including actual calculations. Please let me know in the comments section if you wish to verify your solution(s))
For (b): Use the formula for distance (s) made during an accelerated motion:
[tex]s = \frac{1}{2}at^2+ v_0t+s_0= \frac{1}{2}at^2= \frac{1}{2}gt^2[/tex]
with v_0 and s_0 being the initial velocity and distance, both 0 in this case, and with "a" denoting the acceleration, in this case solely due to gravitational acceleration so: "g."
You are given the distance made, namely 10 m, and the duration t (0.88s) and so using the formula above you can solve for g.
For (c), to determine the final velocity at time 0.88s use the formula for the instantaneous velocity of an accelerated motion
(velocity at time t) = (acceleration) x (time)
again, with acceleration due to gravity, i.e., a = g and with g as determined under (b).
If my calculation is correct, this mystery planet could be the Jupiter.