is it possible that during the big bang the laws of physics changed?
Answers
Answer:
yes, so many answers to that like possibilities
Explanation:
i watch a movie
Related Questions
The North Star is located in the Big Dipper. True or False
Answers
Answer:
False
Explanation:
It is located in the little dipper whose stars are more faint.
Which statement best explains the relationship between the electric force between two charged objects and the distance between them? A. As the distance increases by a factor, the electric force increases by the square of that factor. B. As the distance increases by a factor, the electric force increases by twice that factor. C. As the distance increases by a factor, the electric force decreases by twice that factor. D. As the distance increases by a factor, the electric force decreases by the same factor. E. As the distance increases by a factor, the electric force decreases by the square of that factor.
Answers
Answer: I think it’s C but I’m not completely sure about it please correct me if I’m wrong
How are electric potential difference and electric potential energy related? Electric potential difference is the charge divided by the difference in electric potential energy. Electric potential energy is the charge divided by the electric potential difference. Electric potential difference is the difference in electric potential energy divided by the charge. Electric potential energy is the electric potential difference divided by the charge.
Answers
Answer:
C
Explanation:
Answer:
C. Electric potential difference is the difference in electric potential energy divided by the charge.
Explanation:
edgen correct
Please someone help me.
is the block of wood at rest or in motion?
refer to the figure below draw the forces acting on the block of wood use the gas as the origin of the forces.
thank you very much for answering this.
Answers
Answer:
1) The block of wood is at rest.
2) Weight and Normal Reaction (see attached diagram).
Explanation:
Assumptions
The block of wood is a particle (a body whose mass acts at a point, so its dimensions don't matter).There are no other external forces involved.Question 1
"At rest" or "resting" means that the object isn't moving.
Therefore, the block of wood is at rest.
Question 2
Forces that are acting on the block of wood:
Weight (W): Due to the particle's mass, m, and the acceleration due to gravity, g: W = mg(Weight always acts downwards).Normal Reaction (R or N): The reaction from a surface.
(Normal Reaction is always at 90° to the surface).
See attached diagram.
Explain how to identify a starting position
on a line.
Answers
Answer:
We can easily find out the beginning point of the line by using dot representation. When it comes to position vector, it expresses the exact position of certain object from the starting point of the coordinate system. The vector is a straight line that has a certain end which is fixed to its body
Answer:
Displacement is defined as the distance, in any direction, of an object relative to the position of another object. Physicists use the concept of a position vector as a graphical tool to visualize displacements. A position vector expresses the position of an object from the origin of a coordinate system
Explanation:
Examine the charge distribution shown a) What will the net force be on a third charge of q3 = -5.0x10-5C , placed at point Z? b) What will the total electric potential energy be if a third charge of q3 = -5.0x10-5C is placed at point Z?
Answers
Part A. We are asked to determine the force exerted on a charge placed on point Z. To do that we will use the fact that charges with the same sign will attract each other and charges with a different sign will repel each other. Therefore, we can construct the following free body diagram:
Since q3 and q2 are both negative they repel each other and since q1 is positive this means that q3 and q1 will attract each other.
To determine the magnitude of the forces we will use Coulomb's law:
\(F=k\frac{q_1q_2}{r^2}\)Where:
\(\begin{gathered} k=\text{ Coulomb's constant} \\ r=\text{ distance between the charges} \\ q_1,q_2=\text{ magnitude of the charges} \end{gathered}\)For the force between q1 and q3 we have:
\(F_1=k\frac{q_1q_3}{r_1^2}\)For the force between q3 and q2 we have:
\(F_2=k\frac{q_2q_3}{r_2^2}\)Now, the net force is the difference between F2 and F1 since the force act in different directions, therefore, we have:
\(F=F_2-F_1\)we have taken the left direction to be negative and the right direction to be positive. Now, we substitute Coulomb's law:
\(F=k\frac{q_2q_3}{r_2^2}-k\frac{q_1q_3}{r_1^2}\)We can take "kq3" as a common factor:
\(F=kq_3(\frac{q_2}{r_2^2}-\frac{q_1}{r_1^2})\)The distance from q1 to q3 is:
\(r_1=4m+3m=7m\)The distance from q2 and q3 is:
\(r_2=3m\)Now, we substitute the values:
\(F=(9\times10^9\frac{Nm^2}{C^2})(5\times10^{-5}C)(\frac{4\times10^{-5}C}{(3m)^2}-\frac{4\times10^{-5}C}{(7m)^2})\)Solving the operations:
Solving the operations:
\(F=1.63N\)Therefore, the net force is 1.63 Newtons to the right.
Part B. To calculate the electric potential energy we will use the following formula:
\(U=k\frac{q_1q_2}{r}\)To determine the total energy we add the energy for both pairs of charges, like this:
\(U=k\frac{q_1q_3}{r_1}+k\frac{q_2q_3}{r_2}\)We can take "kq3" as a common factor:
\(U=kq_3(\frac{q_1}{r_1}+\frac{q_2}{r_2})\)Now, we substitute the values:
\(U=(9\times10^9\frac{Nm^2}{C^2})(-5\times10^{-5}C)(\frac{4\times10^{-5}C}{7m}+\frac{-4\times10^{-5}C}{3m})\)Solving the operations we get
\(U=3.42J\)Therefore, the energy is 3.42 Joules.
what are the types of waves
Answers
i hope this helps :)
True or false? Insects are the only 'animals' that can survive by consuming (eating) inorganic salts that contain all the atoms essential for life. False Neither true nor false True Both true and faise Question 15 5 pts True or false? Like plants, bacteria (e. . . E. coli) and yeast (Bakers/Brewers) can survive by ingesting inorganic salts that contain all the atoms essential for life. False True Both true and false Neither true nor false
Answers
(14) The statement "Insects are the only 'animals' that can survive by consuming (eating) inorganic salts that contain all the atoms essential for life" is false .(15) The statement "Like plants, bacteria (e. . . E. coli) and yeast (Bakers/Brewers) can survive by ingesting inorganic salts that contain all the atoms essential for life" is true.
Insects are not the only animals that can survive by consuming inorganic salts containing essential atoms for life. There are other animals that can obtain essential nutrients and minerals from inorganic sources, such as certain types of bacteria and archaea that can derive energy from inorganic compounds through chemo synthesis.
Like plants, bacteria (such as E. coli) and yeast (used in baking or brewing) can survive by ingesting inorganic salts that contain all the essential atoms required for life. They can extract the necessary nutrients and energy from inorganic sources to sustain their biological processes.
The question should be:
(14)True or false? Insects are the only 'animals' that can survive by consuming (eating) inorganic salts that contain all the atoms essential for life.
(a)False
(b)Neither true nor false
(c)True
(d)Both true and false
(15)True or false? Like plants, bacteria (e. . . E. coli) and yeast (Bakers/Brewers) can survive by ingesting inorganic salts that contain all the atoms essential for life.
(a)False
(b)True
(c) Both true and false
(d)Neither true nor false
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1. compare the discharge of the rio grande at albuquerque and at otowi bridge (located upstream, near santa fe)
Answers
The Rio Grande is one of the largest river systems in the United States, running over 3,000 kilometers from the mountains of Colorado to the Gulf of Mexico. The river flows from north to south and passes through several states, including Colorado, New Mexico, and Texas.
A comparison of the discharge of the Rio Grande at Albuquerque and at Otowi Bridge (located upstream, near Santa Fe) is as follows: Albuquerque: It is the largest city in New Mexico, situated in the central part of the state. The Rio Grande flows through the city, where it is dammed to form a large lake known as Elephant Butte Reservoir. The discharge of the Rio Grande at Albuquerque is around 100 cubic feet per second (cfs) during normal conditions.
This means that the river has twice the volume of water at Otowi Bridge than at Albuquerque.During times of drought, the river's discharge can drop to dangerously low levels, affecting wildlife and human communities that rely on the river for water. The river's discharge can also increase during periods of heavy rainfall or snowmelt, leading to flooding in downstream communities.
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Which statement is true for the formation of tides on Earth?
The Sun and Moon are the same distance from Earth and have the same effect on the tides.
The Moon has the greatest effect on tides since it is closer to Earth than the Sun.
The Sun has the greatest effect on tides since it has a greater mass than the Moon.
The Moon has the least effect on tides since it has a smaller mass than the Sun.
Answers
Answer:
B
Explanation:
The moon effects the Earth's tides more than the sun.
The correct statement for the formation of tides on Earth is "The Moon has the greatest effect on tides since it is closer to Earth than the Sun."
Tides are caused by the gravitational pull of the Moon and Sun on Earth's oceans.
While the Sun has a greater mass than the Moon, the Moon is much closer to Earth and therefore has a greater effect on the tides.
The Moon's gravitational pull causes the oceans to bulge towards it, creating high tides on the side of Earth closest to the Moon and on the opposite side of Earth.
As Earth rotates, different areas experience high and low tides. The Sun also has an effect on the tides, but it is less significant than the Moon's effect.
In conclusion, the statement "The Moon has the greatest effect on tides since it is closer to Earth than the Sun" is true for the formation of tides on Earth.
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For the population of objects in the figure, suppose we measure another feature called Color with the following characteristics:
• In the population of elements with Size equal to "Small", the proportion of elements with Color equal to "Blue" is 0.5 and the proportionof elements with Color equal to "Red" is 0.5.
• In the population of elements with Size equal to "Medium", the proportion of elements with Color equal to "White" is 0.5 and the proportion of elements with Color equal to "Red" is 0.5.
• In the population of elements with Size equal to "Medium", the proportion of elements with Color equal to "White" is 1.
1. In the entire population, what is the distribution of Color?
2. What is the proportion of elements in the entire population with Color values equal to "Blue" and Size values equal to "Small"?
3. In the subpopulation with Size equal to "Medium", would it have been possible for the proportion of elements with Color equal to "Red" to be 0.75?
Answers
In the given information, we are provided with the characteristics of Color in different subpopulations based on Size. The first two points state that in the population with Size equal to "Small," the proportion of elements with Color equal to "Blue" is 0.5 and the proportion of elements with Color equal to "Red" is 0.5. Similarly, in the population with Size equal to "Medium," the proportion of elements with Color equal to "White" is 0.5 and the proportion of elements with Color equal to "Red" is 0.5. However, the third point specifies that in the same population with Size equal to "Medium," the proportion of elements with Color equal to "White" is 1.
From this information, we can conclude that in the entire population, the distribution of Color is as follows: 50% Blue, 25% Red, and 25% White. This means that in the entire population, half of the elements have the Color Blue, while the remaining half is divided equally between Red and White.
Furthermore, to determine the proportion of elements with Color equal to "Blue" and Size equal to "Small," we need to consider that the given information does not provide the proportion of elements with Color Blue in the population with Size equal to "Small." Therefore, we can only assume that the proportion of elements with Color equal to "Blue" and Size equal to "Small" is equal to the proportion of elements with Color equal to "Blue" in the entire population, which is 50%. Hence, the proportion of elements with Color values equal to "Blue" and Size values equal to "Small" is 25%.
Lastly, in the subpopulation with Size equal to "Medium," it would not have been possible for the proportion of elements with Color equal to "Red" to be 0.75.
This is because the given information states that the proportion of elements with Color equal to "Red" in the population with Size equal to "Medium" is 0.5. Therefore, the maximum proportion of elements with Color equal to "Red" in the subpopulation with Size equal to "Medium" can only be 0.5.
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A car can accelerate from rest to a speed of 28 m/s in 20 s. What is the average acceleration of the car
Answers
Formula for acceleration:
\(a=\dfrac{V^f-V^I}{t}\)
acceleration(measured in m/s^2) = Final velocity(measured in m/s) - Initial velocity(measured in m/s) / time(measured in seconds)
__________________________________________________________
Given:
\(V^I=0m/s\) (rest)
\(V^f=28m/s\)
\(t=20s\)
\(a=?\)
__________________________________________________________
Finding acceleration:
\(a=\dfrac{V^f-V^I}{t}\)
\(a=\dfrac{28-0}{20}\)
__________________________________________________________
Answer:
\(\boxed{a=1.4m/s^2}\)
A 10-kg piece of aluminum (which has a specific heat of 900 J/kg×°C) is warmed so that its temperature increases by 5.0 C°. How much heat was transferred into it?
Answers
To calculate the amount of heat transferred into the 10-kg piece of aluminum, we can use the formula:
Q = mcΔT
where Q is the amount of heat transferred, m is the mass of the aluminum (10 kg), c is the specific heat of aluminum (900 J/kg×°C), and ΔT is the change in temperature (5.0°C).
Substituting these values into the formula, we get:
Q = (10 kg) x (900 J/kg×°C) x (5.0°C)
Q = 45,000 J
Therefore, the amount of heat transferred into the 10-kg piece of aluminum is 45,000 J.
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Which planets are considered jovian? O Jupiter, Saturn, Uranus, Neptune O Mercury, Venus, Earth, Mars O Earth, Mars, Uranus, Neptune O None of the above O Mercury, Venus, Jupiter, Saturn
Answers
The jovian planets in our solar system include Jupiter, Saturn, Uranus, and Neptune. These gas giants are distinct from the terrestrial planets like Mercury, Venus, Earth, and Mars.
Jovian planets, namely Jupiter, Saturn, Uranus, and Neptune, are characterized by their composition and physical properties. They are primarily composed of gases and lack a solid surface. Jovian planets are much larger in size compared to the terrestrial planets.
They possess thick atmospheres with swirling cloud formations and dynamic weather systems. These gas giants also have a significant number of moons and are accompanied by planetary rings made up of dust and ice particles.
Jovian planets are located farther away from the Sun and have lower densities compared to the terrestrial planets. Their unique characteristics distinguish them from the rocky, inner planets like Mercury, Venus, Earth, and Mars.
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T/F : Staleness and burnout are not associated with overtraining.
Answers
False. Staleness and burnout are often associated with overtraining, which occurs when an individual exceeds their capacity to recover from intense physical training or activity.
Overtraining can lead to physical and psychological symptoms, including decreased performance, fatigue, irritability, and decreased motivation. It is important for individuals to listen to their bodies and take rest and recovery periods to prevent overtraining and associated symptoms.
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A straight stream of protons passes a given point in space at a rate of 2.5 x 109 protons/s. What magnetic field do they produce 1.5 m from the beam
Answers
Answer:
B = 5.3x10⁻¹⁷ T
Explanation:
The magnetic field can be calculated as follows:
\(B = \frac{\mu_{0}I}{2\pi R}\)
Where:
μ₀: is the magnetic permeability = 4πₓ10⁻⁷ H/m
I: is the current
R: is the distance between the magnetic field and the beam = 1.5 m
The current is:
\( I = 2.5 \cdot 10^{9} p/s*1.6 \cdot 10^{-19} C/p = 4.0 \cdot 10^{-10} A \)
Hence, the magnetic field is:
\(B = \frac{\mu_{0}I}{2\pi R} = \frac{4\pi \cdot 10^{-7} H/m*4.0 \cdot 10^{-10} A}{2\pi*1.5 m} = 5.3 \cdot 10^{-17} T\)
Therefore, the magnetic field is 5.3x10⁻¹⁷ T.
I hope it helps you!
The magnetic field will be "\(5.3\times 10^{-17} \ T\)".
Magnetic field:According to the question,
Magnetic permeability, \(\mu_0 = 4 \pi\times 10^{-7} \ H/m\)
Distance between magnetic field and beam, R = 1.5 m
The current (I) will be:
= \(2.5\times 10^9\times 1.6\times 10^{-19}\)
= \(4.0\times 10^{-10} \ A\)
hence,
The magnetic field (B) be:
= \(\frac{\mu_0 I}{2 \pi R}\)
By substituting the values,
= \(\frac{4 \pi\times 10^{-7}\times 4.0\times 10^{-10}}{2 \pi\times 1.5}\)
= \(5.3\times 10^{-17} \ T\)
Thus the response above is appropriate.
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Use each of the following terms in a separate
sentence: insulation, heat engine, and thermal
pollution.
Answers
The old farm house had been wrapped in insulation and sided.
refrigerator may be considered to be a heat engine operated in reverse.
The warmed water may become a thermal pollution problem in terms of the receiving body of water.
Mrs. James mixes tomatoes, bananas, and garden rocks together. She has made a:
Answers
natural salad.
Line-wise Answer-Mrs. James mixes tomatoes, bananas, and garden rocks together. She has made a natural salad.
Hope it helps you...
Benjemin
Convert 93.6 miles per hour. Convert this to kilometers per hour.
Answers
Answer:
150.6 km
Explanation:
One mile is about 1.61 km so multiply 93.6 by 1.6 which gives you above 150.6
need help Match the description to the correct part of the electromagnetic spectrum.
Answers
Waves produced by an object that radiates heat are infrared rays and radio waves have the longest wavelength.
What are electromagnetic waves?The oscillations between an electric field and a magnetic field produce waves known as electromagnetic waves or EM waves. In other words, magnetic and electric fields oscillate to form electromagnetic (EM) waves.
Waves produced by an object that radiates heat are infrared rays.Waves that have the longest wavelength and lowest frequency/energy are radio waves.Rays that occur naturally in sunlight; most are absorbed by the ozone layer; can cause cancer are ultraviolet rays.Have the shortest wavelength and highest energy; produced by stars and nuclear explosions are gamma rays.The part of the electromagnetic spectrum that can be detected by human eyes; allows us to see is the visible light spectrumThus, this is the description of the correct part of the electromagnetic waves.
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A brass rod is 25.0 cm long at a temperature of 20.0°C. The coefficient of linear expansion of brass is 19.0 × 10−6/°C. If the temperature changes to 25°C, then the increase in length of the brass rod is
Answers
The increase in length of the brass rod is 0.02375 cm (or 2.375 mm) when the temperature changes from 20°C to 25°C.
The increase in length of the brass rod can be calculated using the formula:
ΔL = αLΔT
Where ΔL is the change in length, α is the coefficient of linear expansion, L is the original length, and ΔT is the change in temperature.
Substituting the given values, we get:
ΔL = \((19.0 * 10^{-6}/C) (25.0 cm) * (25C - 20.0C)\)
ΔL = \(2.375 * 10^{-3} cm\)
Therefore, this change in length is due to the linear expansion of the brass rod with temperature, which is characterized by the coefficient of linear expansion. The higher the coefficient of linear expansion, the more the length of the rod will change with a change in temperature.
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What is the formula of frequency and spring constant?
Answers
The formula for frequency, denoted by the Greek letter nu (ν), is: ν = 1 / T
The formula for spring constant, denoted by the letter k, is: k = - (F / x)
Frequency and spring constant are two important concepts in physics that are related to the behavior of oscillating systems.
T is the period of oscillation, or the time it takes for one complete cycle of oscillation to occur.
F is the force applied to the spring, and x is the displacement of the spring from its equilibrium position. The spring constant is a measure of how difficult it is to stretch or compress the spring.
It's important to note that frequency and spring constant are inversely related, meaning that as one increases, the other decreases. For example, a spring with a larger spring constant will have a lower frequency of oscillation because it is harder to stretch or compress. Similarly, a system with a higher frequency of oscillation will have a smaller spring constant because it is easier to stretch or compress.
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Books in a library were counted one by one. There were a total of 57000 books in the library. How many significant digits are there in the result? Will the result change if the books are measured in the paacket of 10?
Answers
The total number of significant digits in the given number is five. If the books are measured in packets of 10, the number of significant digits reduces to two.
The given data is: Total number of books in the library = 57,000. We are to determine how many significant digits are there in the result? For this, let us define what are significant digits: Digits that are used to communicate meaning or accuracy of measurements are known as significant digits. In other words, the digits that carry meaning contributing to its measurement uncertainty are called significant digits. It is used to determine the accuracy of the results. In this question, the total number of books in the library is given as 57,000. As there are five non-zero digits in the given number, there are five significant digits in the result. Will the result change if the books are measured in the packet of 10? If the number of books is measured in the packet of 10, then there will be a change in the number of significant digits. When we express 57,000 in the packet of 10, we get: 57,000 = 5.7 × 10^4. Now, there are only two significant digits in the result (5 and 7), and hence the result changes.
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The molar mass of Ne atoms is 20g/mol. How many moles are there in 100g of neon?
A. 5
B. 0.2
C. 2000
D. 10
Answers
100 grams of neon is equivalent to 5 moles of neon atoms.
The molar mass of a substance is the mass of one mole of that substance. The concept of molar mass is used to convert between the mass of a substance and the number of moles of that substance. In this question, we are given the molar mass of neon atoms, and we are asked to determine the number of moles in 100 grams of neon.
To solve this problem, we need to use the relationship between the molar mass and the number of moles. The relationship is:
moles = mass / molar mass
where "mass" is the mass of the substance in grams, and "molar mass" is the molar mass of the substance in grams per mole.
Given the molar mass of neon is 20g/mol, we can substitute these values into the equation:
moles = 100g / 20g/mol
Solving for moles we get:
moles = 5 mol
Therefore, 100 grams of neon is equivalent to 5 moles of neon atoms.
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Inelastic collisions do not conserve kinetic energy. Does
this violate the Law of Conservation of Energy?
Answers
Answer:
No. Because undefined amounts of energy are also released in deformation of the objects, heat released, etc.
in one or two sentences, describe the difference between a qualitative and quantitative statistical analysis.
Answers
Quantitative statistical analysis involves the use of numerical data to measure and analyze patterns and relationships, while qualitative statistical analysis involves the examination of non-numerical data to identify themes, patterns, and insights.
Qualitative research methods include gathering and interpreting non-numerical data. The following are some sources of qualitative data:
Interviews
Focus groups
Documents
Personal accounts or papers
Cultural records
Observation
In the course of a qualitative study, the researcher may conduct interviews or focus groups to collect data that is not available in existing documents or records. To allow freedom for varied or unexpected answers, interviews and focus groups may be unstructured or semi-structured.
An unstructured or semi-structured format allows the researcher to pose open-ended questions and follow where the responses lead. The responses provide a comprehensive perspective on each individual’s experiences, which are then compared with those of other participants in the study.
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the force vs. time graphs for two collisions are shown. which collision has the largest impulse?
Answers
Momentum is a product of the mass and velocity of particles in motion while impulse is the rate of change of the momentum of particles/objects when a force acts on the object.
The impulse of the collision in system A is twice the impulse of the collision in system B
Impulse is given as J = F.dt
In case of impulse 1,
it is F(1-0.5) = 4* 0.5 = 2 Ns
In case of impulse 2,
it is = 2(2.5 - 1.5) = 2Ns
We saw that, both the impulses are calculated to be 2Ns.
Therefore, both the impulses in the graph are same.
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why do we accelerate forward when we run?
Answers
It depends on what direction you are running in, if it's forward, you'll have to keep to accelerating forward to keep running.
If you stop accelerating forward, you wouldn't be able to move forward.
an object of 98 N weight is dropped from 10 m height and it hit ground with a speed of 12 m/s find air friction
Answers
vf²=vi²+2ad
12²=0+2.a.10
a = 7.2 m/s²
W = m.g
m = W/g = 98/9.8 = 10 kg
∑F=m.a
W-fr=m.a
fr(air friction)=W - m.a
fr = 98 - 10 x 7.2
fr = 98 - 72
fr = 26 N
a car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 28 ft/s2. what is the distance (in ft) traveled before the car comes to a stop? (round your answer to one decimal place.)
Answers
The distance traveled before the car comes to a stop is approximately 75.7 ft (rounded to one decimal place).
Explanation:
What is deceleration?Deceleration is the opposite of acceleration, and it refers to the rate at which an object slows down or decreases its velocity. Mathematically, deceleration is the negative acceleration. When an object is decelerating, it is experiencing a net force in the opposite direction of its velocity, causing it to slow down.
a car, traveling, and constant deceleration. To find the distance traveled before the car comes to a stop, we can use the following steps:
Step1. Convert the initial velocity (50 mi/h) to ft/s:
(50 mi/h) * (5280 ft/mi) * (1 h/3600 s) = 73.3 ft/s
Step2. Use the formula vf^2 = vi^2 + 2ad to find the distance (d), where vf is the final velocity (0 ft/s), vi is the initial velocity (73.3 ft/s), and a is the constant deceleration (-28 ft/s^2):
0 = (73.3 ft/s)^2 + 2(-28 ft/s^2)(d)
Step3. Solve for the distance (d):
d = (73.3 ft/s)^2 / (2 * 28 ft/s^2) = 75.7 ft
So, the distance traveled before the car comes to a stop is approximately 75.7 ft (rounded to one decimal place).
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