Answer:
Dynamic exercises
Explanation:
which illustration represents the arrangement of particles in a gas
Answer:
You didn't provide a picture of the illustration so unfortunately nobody can help you :(
An object has a mass of 450g. What is the gravitational force of the object by earth?
Answer:
4.41N or 4.5N (check explanation)
Explanation:
450g = 0.45kg
F = ma
Using 10m/s² = 10(0.45) = 4.5N
Using 9.8m/s² = 9.8(0.45) = 4.41N
in both a dry cell and a wet cell battery, what causes the production of an electrical current.
a. chemical reaction

b.a step down substation transformer
c. magnets
d. generators at a power plant
Answer:
a. chemical reaction
Explanation:
In both a dry and wet cell battery, electric currents are produced through chemical reactions.
Both cells are together called electrochemical cells.
In these cells, chemical reactions produce an electric current. They are devices that converts chemical energy into electrical energyThe reactions here are spontaneous redox reactions. This causes the current to flow on their own in the circuit.A jogger runs 6km north, 5km east, then another 4km north. Her average speed is 8 km/h. How long will it take her to complete her run?
Answer:
t = 1.875 hours
Explanation:
Speed
The speed is the rate at which an object moves. If the speed is constant, then the formula to calculate it is:
\(\displaystyle v=\frac{d}{t}\)
Where d is the distance traveled in time t.
The jogger runs 6 Km plus 5 Km plus 4 Km north for a total of 15 Km.
It's given her average speed is 8 Km/h. We can calculate the time take to complete the run by solving the above formula for t:
\(\displaystyle t=\frac{d}{v}\)
\(\displaystyle t=\frac{15\ Km}{8\ Km/h}\)
t = 1.875 hours
a beam of monochromatic light travels through flint glass, crown glass, lucite, and water. the speed of light beam is slowest in
Answer:
The answer is flint glass.
AKS 8a - Phenomena-Based Question: Use the data and the graph to make a claim as to which person represents each letter on the graph. In your discussion, be sure to:
explain how the data matches each line on the graph
describe, compare, and contrast the rates of speed and change in position for each person based on the documents
explain what the slope of each line helps determine
Person
Action
Distance Travelled
Time
Dad
Drives home from the grocery store
1 mile
10 minutes
Aiden
Rides his bike to a friend’s house
0.75 miles
10 minutes
Mom
Waits at the doctor’s office
0 miles
10 minutes
Alexis
Walks to her mailbox down the long driveway
0.25 miles
10 minutes
Answer: what’s the answer
Explanation:
Which type of research would be most appropriate for a research looking to see how drinking coffee impacts college students' grade point averages (GPAs)?
A type of research which would be most appropriate for a research looking to see how drinking coffee impacts college students' grade point averages (GPAs) is a survey.
What is a research method?In Science, a research method can be defined as the scientific methods or techniques that are adopted by a researcher for the collection and analysis of data.
What are the types of research method?Generally speaking, there are different types of research method that are used for the collection of data and these include the following:
Focus groups.Mixed methodsExperiments.ObservationSecondary data analysis.Interviews.Surveys.In Science, a survey simply refers to a type of research method that uses various data collection methods such as questionnaires and interviews, which favors it in revealing correlations between two data variables such as the relationship between coffee and college students' grade point averages (GPAs).
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An RL circuit has L=5 H and R = 22.
a) How long would it take, following the removal of the battery, for the magnetic energy to decay to 13% of its maximum value?
b) What is the voltage across the inductor at that instant?
a) , it would take approximately 0.4638 seconds for the magnetic energy to decay to 13% of its maximum value.. b) the voltage across the inductor at the instant when the magnetic energy has decayed to 13% of its maximum value is 6.4 times the initial current in the circuit.
An RL circuit consists of a resistor (R) and an inductor (L) connected in series. When a battery is connected to the circuit, the inductor stores magnetic energy, which creates a magnetic field. When the battery is removed, the magnetic energy in the inductor begins to decay, and the magnetic field collapses, inducing a voltage across the inductor.
a) The time constant (τ) of an RL circuit is given by the formula:
τ = L/R
where L is the inductance in henries, and R is the resistance in ohms. The time constant represents the time required for the magnetic energy to decay to approximately 36.8% of its maximum value.
In this case, L = 5 H and R = 22 ohms. Therefore, the time constant of the circuit is:
τ = L/R = 5 H / 22 ohms = 0.2273 seconds
To calculate the time required for the magnetic energy to decay to 13% of its maximum value, we can use the formula:
t = -ln(0.13) * τ
where ln is the natural logarithm. Plugging in the values, we get:
t = -ln(0.13) * 0.2273 seconds
t = 0.533 seconds
Therefore, it would take approximately 0.533 seconds for the magnetic energy in the inductor to decay to 13% of its maximum value.
b) To find the voltage across the inductor at that instant, we can use the formula:
V = L * di/dt
where V is the voltage across the inductor, L is the inductance, and di/dt is the rate of change of the current in the circuit.
At the instant when the magnetic energy in the inductor has decayed to 13% of its maximum value, the current in the circuit is given by:
I = I0 * e^(-t/τ)
where I0 is the initial current, and e is the mathematical constant approximately equal to 2.71828. Plugging in the values, we get:
I = I0 * e^(-0.533/0.2273)
I = 0.292 * I0
Therefore, the rate of change of current (di/dt) at that instant is given by:
di/dt = I / τ = (0.292 * I0) / 0.2273
Now, we can calculate the voltage across the inductor:
V = L * di/dt = 5 H * (0.292 * I0 / 0.2273)
V = 6.4 * I0 volts
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Elle is playing with a ball in a bus that moves in a straight line with constant velocity. What can you say about the motion of the ball in the moving bus if Elle throws the ball vertically upwards?
Two students are applying a force on a desk on the same side causing it to move to the right what were the forces acting on it?
Answer:
contact force because they were pushing it and it moved
Why is it harder to build a supersonic ship than a supersonic airplane
Answer:
sound velocity is greater in water,and it is harder to move through.thank you.Explain why the coin is able to float on top of the water in this glass
Explanation:
Becuse the coin has a Lesser Density than water.
The final velocity of a truck is 74.0ft/s. If it accelerates at a range of 3.00ft/s^2 from an initial velocity of 5.00ft/s, how long will it take for it to attain its final velocity?
The final velocity of a truck is 74.0 ft/s, if it accelerates at a range of 3.00 ft/\(s^2\) from an initial velocity of 5.00 ft/s, then it will take the truck 23.67 seconds to attain its final velocity of 74.0 ft/s.
What is the calculation for the final velocity?v = u + at
Here, v =the final velocity, u =the initial velocity, a =the acceleration, and t =the time taken.
Substituting the given values, one can get,
74.0 ft/s = 5.00 ft/s + 3.00 ft/\(s^2\) × t
Solving for t, one gets,
t = (74.0 ft/s - 5.00 ft/s) / (3.00 ft/\(s^2\)) = 23.67 s (that is 23.67 seconds is needed to attain final velocity of 74.0 ft/s)
Hence, a truck needs 23.67 seconds time to attain its final velocity of 74.0 ft/s and this is the final velocity.
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Determine the energy released per kilogram of fuel used.
Given MeV per reaction, calculate energy in joules per kilogram of reactants.
Consider 1 mile of tritium plus 1 mole of deuterium to be a mole of "reactions" ( total molar mass = 5 grams)
The energy released per kilogram of fuel used is 3.39 * 1014 J/Kg
Why is the energy released in a reaction?Energy is released in a reaction because of the breaking of bonds are well as formation of bonds.
The quantity of energy released in reactions differs according to the reaction type involved.
The energy released in nuclear reactions are far larger than that released in chemical reactions due to the release of nuclear energy from the nucleus.
The energy, E released in nuclear reactions is given by the formula below:
Energy per kilogram of reactants (in joules) = Energy per mole of reactants (in joules) / Total molar mass of reactants (in kg)
Energy per kilogram of reactants (in joules) = \(1.60218 x 10^-^1^3 joules\) / 5 grams
Energy per kilogram of reactants (in joules) = 3.39 * 1014 J/Kg
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The energy released per kilogram of fuel used is 5.632 × 10^-14 J/kg.
5 grammes, 0.005 kilogrammes, of reactants are provided.
Since 1 mile of tritium and 1 mile of deuterium are equal to 1 mole of "reactions," the sum of the "reactions" in 0.005 kilogrammes of reactants may be computed as follows:
Total moles of "reactions" in 0.005 kg of reactants = (0.005 kg / 5 g/mol)
= 0.001 mole.
The MeV per reaction must now be multiplied by the total number of "reactions" in order to get the total energy released by the "reactions."
Next, the energy must be converted from MeV to Joules.
MeV to Joules conversion factor is 1.6 10-13 J/MeV.
Total energy released = (MeV per reaction) x (number of reactions) x (conversion factor)
Total energy released = (17.6 MeV/reaction) x (0.001 mole) x (1.6 × 10^-13 J/MeV)
Total energy released = 2.816 × 10^-16 J
The total energy released by the "reactions" is 2.816 × 10^-16 J.
To determine the energy released per kilogram of fuel used, we need to divide the total energy by the mass of fuel used.
Total energy released per kilogram of fuel used = (total energy released) / (mass of fuel used)
Total energy released per kilogram of fuel used = (2.816 × 10^-16 J) / (0.005 kg)
Total energy released per kilogram of fuel used = 5.632 × 10^-14 J/kg
Therefore, the energy released per kilogram of fuel used is 5.632 × 10^-14 J/kg.
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HELP ME OUT PLEASE!!
What is the correct definition of a light-year?
O the amount of time it takes light to get to the nearest star
O the distance light travels in a day
O the distance light travels in a year
The correct definition of a light year is the distance light travels in a year.
What is light year ?Light year is one of the largest unit of length or distance. One light year is equivalent to the distance or length traveled by light in one year.
One light year = velocity of light × one year.
= 3×\(10^{8}\) m/s × 365 days.
=3×\(10^{8}\) m/s × (365 × 24 × 60 × 60 ×60) s.
= 3×\(10^{8}\) m/s × (365 × 86400) s.
= 9.461×\(10^{15}\) m.
So, the distance covered by light in one year, that is, 9.461×\(10^{15}\) m is equal to one light year.
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someone help me with this exercise ?
1. if a body with a mass of 350kg is subjected to a fare of 90n what will be its mass
?
Mass remains mass no matter what you do to it.
An oscillating LC circuit consisting of a 1.0 nF capacitor and a 3.0 mH coil has a maximum voltage of 3.0 V. What are (a) the maximum charge on the capacitor, (b) the maximum current through the circuit, and (c) the maximum energy stored in the magnetic field of the coil
Answer:
\(E=4.5*10^-^9J\)
Explanation:
From the question we are told that:
Capacitor \(C=1.0nf\)
Induction \(I=3.0mH\)
Voltage \(V=3.0\)
Generally the equation for Max charge on Capacitor is mathematically given by
\(Q_{max}=C*V\)
\(Q_{max}=1*10^{-9}*3\)
\(Q_{max}=3*10^{-9}C\)
Generally the equation for Energy in magnetic field of the coil is mathematically given by
Since
Energy stored in capacitor = Energy in magnetic field of the coil
Therefore
\(E = (1/2)* C * V^2\)
\(E= 0.5 * 1*10^{-9} *3^2\)
\(E=4.5*10^-^9J\)
Standing on a skateboard and shoot a paintball gun at your friend
Answer:
ok
Explanation:
Answer:
shooting
Explanation:
i hope you're joking
A
consists of a period of non-strenuous activity that slowly
prepares the body for more vigorous exercise.
The period of non-strenuous activity that slowly prepares the body for more vigorous exercise is called a warm-up. A warm-up is an essential part of any exercise routine as it helps to prepare the body physically and mentally for more intense physical activity.
Explain non-strengthening activity that gradually prepares the body for more strenuous exercise?
During a warm-up, the body's muscles, heart, and lungs gradually increase their activity levels, and the body's temperature begins to rise. This gradual increase in activity and temperature helps to reduce the risk of injury and improves performance during more intense exercise.
A typical warm-up can last between 5 to 15 minutes, depending on the intensity of the upcoming exercise. Some common warm-up activities include light aerobic exercises like jogging or cycling, dynamic stretching, and mobility exercises.
It is important to note that a warm-up should not be too strenuous activity , as this can cause fatigue and decrease performance during the main workout. Instead, it should be a gentle and gradual increase in activity level to prepare the body for the upcoming exercise.
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What are the reasons Flat Earther's use to prove their claim?
Answer:
The ground we walk on is flat, not round. Gravity doesn't exist. Objects don't fall down, the flat earth(disk) goes up with a force called dark energy. There is a 45 ft tall ice wall to prevent people from falling off the Earth.
Explanation:
The electrical power of a circuit can be calculated by the equation P = V × I. The table below shows the different voltages that can be supplied to the circuit. If current stays the same, which voltage will most likely result in the smallest electrical power?
A B C D
100V 25V 5V 30V
A
B
C
D
Answer: C. 5V
Explanation:
Since P = VI, power is directly proportional to voltage
If current is constant, then the lower the voltage, the lower the power. The lowest voltage shown is 5 Volts.
Parachute Drop
parachute
1
parachute released,
speed increasing
downward
box
N
parachute opened,
constant speed
downward
Choose the word to best complete each sentence.
1
Point 1: Gravitational force is greater than
air resistance force.
Point 2: Gravitational force is (Select)
air resistance force
Answer:
greater than.
Explanation:
if gravitational force less than air resistance then force is upwards and not bringing the object downwards.if gravitational force greater then the force is downwards and bringing object down. That's exactly what's happening here.if gravitational force is equal : Terminal velocity is reached where the force due to air resistance equals the force due to gravity. There is no net force and therefore no further acceleration.
The electronic structure of a neon atom shown in Figure 2 is not correct.
Explain what is wrong with the the electronic structure
at first there is 10 electron in neon . 2 electron present at k shell and 8 present l shell . there is no rules of atomic structure . becomes it being wrong.
The wrong with the electronic structure of Neon is that the innermost shell i.e. K shell has two electrons while the valence shell i.e. L shell has 8 electrons.
What do you mean by Electrons?Electrons may be defined as particles that are negatively charged and revolves around the nucleus of each atom in the free state.
Neon is an atom that possesses the atomic number 10. It consists of 10 electrons that are revolving around the nucleus.
Therefore, it is well described above.
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If the system is in equilibrium, calculate the tension in string QR with the aid of a diagram.
177181929303040111111
What would make oppositely charged objects attract each other more?
o increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
O decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively charged object
O increasing the distance between the positively charged object and the negatively charged object
O maintaining the distance between the positively charged object and the negatively charged object
Answer:
a: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Explanation:
The oppositely charged objects attract each other more is option a. It increased the positive charge and the negative charge.
The Attraction of the oppositely charged:At the time when the oppositely charged objects are attracted to each other more so here the positive charge should be increased with respect to the positive charge object and the negative charge is increased with respect to the negative charge object
Hence, the first option is correct.
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Question 3 (2 points)
Of the following exercise stimuli, ordered from the lightest to the heaviest, select the
intensity that has been shown to significantly improve affect for most people (albeit
perhaps for a relatively short period of time)
a 10-minute walk at a self-selected intensity
a 20-minute session of a cycle ergometer at 60% VO2max
a 30-minute treadmill run at 75% VO2max
a 60-minute session of aerobics at 75% VO2max
multiple 30 second intervals at 150% VO2max
A 20-minute cycle ergometer exercise at 60% VO2max has been demonstrated to dramatically improve impact for the majority of persons.
Intensity and an example are what?the property of being strongly felt or having a powerful impact: The explosion was so loud that it could be heard from five kilometres distant. Measures of luminosity. [C or U] the strength of being something that may be measured, such as sunlight, sound, etc.
The measurement of intensity:A measure that is produced from a randomised measure is known as an intensity measure in probability theory. Since the randomised measure of a set's expected value is the intensity measure, which is a non-random measure, it equates to the average volume that the random measure assigns.
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What constant acceleration in si units must a car have to go from zero to 60 mph in 10s. what fraction of g is this? How far has the car traveled when it reaches 60 mph?
24. What are the three factors Gore says are causing a collision between our civilization and the Earth? Explain each one.
Gore argues that the combination of population growth, a globalized economy, and technological impact is driving our civilization towards a collision with the Earth, jeopardizing the well-being of future generations.
1. Population Growth: Gore argues that the rapid growth of the global population is straining the Earth's resources and ecosystems. As the population increases, so does the demand for food, water, energy, and other resources, leading to overconsumption and environmental degradation. This places a significant burden on the planet's capacity to sustain life and maintain a healthy balance.
2. Globalized Economy: The expansion of the globalized economy has resulted in increased production, consumption, and trade on a massive scale. While this has brought economic benefits and improved living standards for many, it has also contributed to environmental problems. The pursuit of economic growth often prioritizes short-term profits over long-term sustainability, leading to resource depletion, pollution, and climate change.
3. Technological Impact: Advances in technology have brought numerous benefits to society, but they have also come with unintended consequences. Industrial processes, transportation systems, and energy production have increasingly relied on fossil fuels, leading to greenhouse gas emissions and climate change. Additionally, technological advancements have accelerated the extraction and exploitation of natural resources, further straining the planet's ecosystems.
He advocates for sustainable solutions that prioritize environmental conservation, renewable energy, and responsible resource management to mitigate these challenges.
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How does energy change from kinetic to potential?
Answer:
A: An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).
Explanation:
The following images show five planets in our solar system. rank these planets from left to right based on their average surface (or cloud-top) temperature, from highest to lowest. (not to scale.)
The order of the average surface temperature of the given planets as Mercury, Earth, Mars, Jupiter, and Neptune based on their distance from the sun.
What is the solar system?The Solar System can be described as the gravitationally bound system of the Sun and the plants are the objects that orbit it. The solar system is formed 4.6 billion years ago from the gravitational collapse of a giant interstellar cloud.
Most of the mass of the solar system is contained in the Sun and the remaining mass is in the planet Jupiter. The four inner planets Mercury, Venus, Earth, and Mars are terrestrial planets, made primarily of rock and metal.
The two largest planets Jupiter and Saturn, are gas giants, made mainly of hydrogen and helium. The next two, Uranus and Neptune, are ice giants, made of volatile substances with hydrogen and helium, such as ammonia, water, and methane.
The average surface temperature of Mercury is 333°F (167°C), Earth 59°F (15°C), Mars -85°F (-65°C), Jupiter -166°F (-110°C), and Neptune -330°F (-200°C)
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