Answer:
A catalyst is a chemical substance that affects the rate of a chemical reaction by altering the activation energy required for the reaction to proceed. This process is called catalysis. A catalyst is not consumed by the reaction and it may participate in multiple reactions at a time.
Explanation:
a
1. How would you describe the area in which you live? Use terms such as desert, prairie, or
coastal. Even if you live in a city, in which type of environment was the city built?
I need help ASAP
Answer:
forest rual area
Explanation:
because thats where i live
Final answer:
The desert environment of the Great Basin Desert where I live impacts the city's architecture, economy, and conservation efforts. Unique flora and fauna, along with minimal water resources, shape the community's way of life and urban planning. Geographic features like nearby mountains further influence the city's development and residents' daily activities.
Explanation:
The area in which I live is a desert, specifically the northern tip of the Great Basin Desert. The natural setting of a city can vastly influence its history, design, layout, and way of life. For instance, the dry and semiarid climate of this area has led to a fragile ecosystem. Three examples of how the environment has shaped my city include the architecture, which is designed with materials suitable for hot and dry conditions; the city's economy, which is likely to be based on industries that can thrive in such a climate, such as tourism; and conservation efforts, which are significant due to concern for the fragile ecosystem and endangered species in the region.
This desert environment means we have a unique set of flora and fauna adapted to the dry conditions. Construction materials tend to reflect the limited resources available, leaning more into minimalist designs that can maintain cooler indoor temperatures. The economy is also shaped by the environment, as agricultural practices and water usage have to be carefully managed, and recreational activities often revolve around the unique landscape, such as hiking in desert parks.
The surrounding landscape is characterized by low rainfall and limited water sources, which also impacts urban planning regarding water usage and storage. Additionally, geographic features such as nearby mountains can influence weather patterns and therefore impact city planning and daily life.
1. A 2 C charge moving at 15 m/s enters into a magnetic field of strength 8
T. What is the maximum force experienced by this charge? *
Answer:
Maximum force on the charge is 240 N
Explanation:
We have given charge q = 2C
Speed of the charge v = 15 m/sec
Magnetic field B = 8 T
It is known that magnetic force on the moving charge is given by
[tex]F=qvBsin\Theta[/tex]
Maximum force will be equal to
[tex]F=qvB[/tex]
[tex]F=2\times 15\times 8=240N[/tex]
Therefore maximum force on the charge is 240 N
Final answer:
The maximum force experienced by a 2 C charge moving at 15 m/s in an 8 T magnetic field is 240 N, assuming the charge moves perpendicular to the magnetic field.
Explanation:
The maximum force experienced by a 2 C charge moving at 15 m/s in a magnetic field of 8 T can be calculated using the formula F = qvB sin θ, where q is the charge, v is the velocity, B is the magnetic field strength, and θ is the angle between the velocity and the magnetic field. Assuming the maximum force occurs when the charge moves perpendicular to the magnetic field (θ = 90 degrees), the sine of 90 degrees is 1, simplifying our calculation to F = qvB. Thus, the maximum force is F = (2 C)(15 m/s)(8 T) = 240 N.
Is the Air Force better than the Navy?
Answer:
I think that's more of an opinion
An spring has a period of 4 seconds. What is its frequency?
Answer:
2Hz
Explanation:
Hope this helps
Planets move around the sun in elliptical orbits.
A. true
B. false
Answer:All planets move in elliptical orbits, with the sun at one focus. This is one of Kepler's laws. The elliptical shape of the orbit is a result of the inverse square force of gravity. The eccentricity of the ellipse is greatly exaggerated here.
so it is true
Explanation:
Answer:
True
Explanation:
You can't actually see the orbits or paths of the planets revolving around the sun.
One way to create static electricity is to ____________.
A.turn off an electric circuit
B.run an electric current through an object
C.rub two things together
D.use an electric generator
Answer:
C. Rub two things together.
Explanation:
Rubbing two things together causes friction which forms energy and there you have it, static electricity. Take a fuzzy sweater and rub it against another fuzzy sweater and then touch it. The energy stored will release in the form of shock.
Lightning is an example of static discharge.
True Or False
Answer:
true
Explanation:
Answer: true
Explanation:
Infer whether a circuit breaker should be connected in parallel to the circuit that it is protecting.
The circuit breaker should be connected in series to the circuit that it is protecting it.
The circuit breaker is a device that helps to protect the circuit. In case of emergency the circuit breaker cuts off any live wiring in the circuit. This process will only be possible if the circuit is connected in series to the circuit.
In series circuit connection, current flowing in the circuit is the same. When the circuit breaker cuts off, all the current flowing in the circuit breaks.
Thus, the circuit breaker should be connected in series to the circuit that it is protecting it.
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What does the law of conservation of momentum
Answer:
the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
Explanation:
A 500kg elevator is raised to a height of 10 m in 10 seconds. Calculate the power of the motor.
490 W
49,000 W
4900 W
490,000 W
Answer:
Correct answer: Third statement P = 4900 W
Explanation:
Given:
m = 500 kg the mass of the elevator
h = 10 m reached height after t = 10 seconds
P = ? power of the motor
The formula for the calculating power of the motor is:
P = W / t
since work is a measure of change in this case of potential energy then it is:
W = ΔEp = Ep - 0 = Ep
In this case we must take g = 9.81 m/s²
Ep = m g h = 500 · 9.81 · 10 = 49,050 W ≈ 49,000 W
Ep ≈ 49,000 W
P = Ep / t = 49,000 / 10 = 4,900 W
P =4,900 W
God is with you!!!
Fill in the blank. When the northern hemisphere experiences autumn, the southern hemisphere experiences __________.
A. spring
B. summer
C. autumn
D. winter
4. How does temperature affect the density of a material?
Answer:
Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. ... Hot water is less dense and will float on room-temperature water. Cold water is more dense and will sink in room-temperature water.
Explanation:
Temperature influences a material's density by altering its particles' arrangement; generally, substances expand and become less dense at higher temperatures.
Temperature affects the density of a material due to changes in its molecular structure and particle motion. When a material is heated, its particles gain energy and move more vigorously, causing them to expand and increase the volume they occupy. If the mass remains constant while the volume increases, the density decreases.
This phenomenon is observed in most substances, especially gases and liquids. In contrast, some materials exhibit unusual behavior. For instance, water reaches its maximum density at approximately 4 degrees Celsius before expanding as it freezes into ice. This behavior is essential for aquatic life during winter as it prevents lakes and rivers from freezing entirely, maintaining a liquid layer on the surface. Overall, temperature-induced changes in particle arrangement and motion play a significant role in altering a material's density, impacting various natural processes and industrial applications.
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The amount of electric energy consumed by a 60.0-watt lightbulb for 1.00 minute could lift a
10.0-newton object to a maximum vertical height of
A) 6.00 m B) 36.7 m C) 360. m D) 600. M
Answer:
Explanation:
Given that,
Amount of energy consumed by a 60W light bulb for 1 minutes
P = 60 W
t = 1 mins = 60seconds
This energy can be used to lift a body that weight 10N
W = 10N
This shows that the electrical energy is converted to potential energy
Let calculate the electrical energy
Power is the rate of doing work
Power = Work / time
Therefore, work = power × time
Work = 60 × 60
Work = 3600 J
Potential energy can be calculated using
P.E = mgh
Where, weight is
W = mg
Then, P.E = W•h
P.E = 10•h
Then,
Potential energy, = Electrical energy
P.E = Work
10•h = 3600
Divide both sides by 10
h = 3600 / 10
h = 360m
So, the object will be lifted to a height of 360m
Answer:
360. m
Explanation:
two astronauts are playing catch in space. One of them misses a throw. Describe the motion of the ball after the astronaut missed the catch
Answer:
the ball floats away far out into the space and it goes at a fast motion because no friction can stop it if it's doesn't bump into anything
Select the correct answer from each drop-down menu.
Pictures that we receive from space are of the
because it takes time for
to reach Earth.
Reset
Next
Answer: the other guy does not know anything about science! he is incorrect, the answers are past for the first blank and light for the second blank. depending on what planet in space you take pictures on, and how far away they are, and their orbit, it is past and light. because it takes time for light to reach earth depending on the planet's orbit, and how far away it is.
so the correct answers are: past, and light.
What is the difference between speed and velocity ?
A) velocity describes speed with direction.
B) there is no difference.
C)Velocity describes direction with position.
D)Velocity is used in space, while speed is used on earth.
velocity describes speed with direction.
The difference between speed and velocity is that velocity describes the speed with direction. Hence, option A is correct.
What is the difference between Speed and Velocity?Despite their similarities, speed and velocity have quite different meanings, just as distance and displacement do. Speed, which is a scalar quantity, is the "speed at which an object is moving." The rate at which an object travels a distance can be thought of as its speed.
A fast-moving object travels at a high speed and completes a significant distance in a brief period. This is in contrast to an object traveling slowly, which travels a relatively short distance in the same length of time. Zero speed refers to an object that is not moving at all.
One side velocity is vector and speed is scalar other side.
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A magnet and a metal paper clip have the strongest magnetic attraction when the distance between them is _____________.
A
16 centimeters
B
12 centimeters
C
8 centimeters
D
4 centimeters
Answer: D
4cm
Explanation:
Any magnet is strongest for attracting other objects at close range. However, the strongest point of attraction depends on the magnetic pole position which is at a point inside the magnet.
2. Two charges are attracted to each other with a force of eight units. If the charge of one of the two
doubles and the distance between the two objects remains the same, what will be the new force of
attraction between the two objects? Explain your answer.
Answer:
16
Explanation:
The formula for the force of attraction between two charges is [tex]\frac{k\cdot q_1q_2}{r^2}[/tex], where k is a constant, [tex]q_1[/tex] is the first charge, and [tex]q_2[/tex] is the second charge. As you can see, if the radius or distance increases by 2, the force decreases by 4 because it grows exponentially. However, if the charge of one of the particles increases by 2, the force between the two also increases by 2. Therefore, the new force will be 8*2=16. Hope this helps!
The new force of attraction between the two objects is;
F_new = 2F
The formula for force of attraction between two objects is;
F = kq1•q2/r²
Where;
k is coulombs constant
q1 is charge of first object
q2 is charge of second object
r is distance between both objects
Now we are told that the charge of one of the two object doubles and the distance between them remains the same.
This means q1 is now 2q1.
Thus;
F_new = k(2q1) × q2/r²
>> F_new = 2(kq1•q2/r²)
Thus, new force of attraction between both objects will be twice the initial force of attraction which is 2F.
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As a substance condenses, its temperature does not change. How does the potential energy of the molecules of the substance change as a result of the heat release? What type of energy must decrease in order for the temperature to decrease
Answer:
Potential energy decreases because temperature is measured by the how fast molecules move. The more kinetic energy in the molecules, the less potential energy
A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). A straight blue line runs with an upward slope from 0 seconds 3 meters to 4 seconds 15 meters.
The starting position of this object is
m.
The object is traveling at a velocity of
m/s.
Final answer:
The question involves analyzing a position vs. time graph to determine the object's starting position at 3 meters and its velocity, which is calculated as 3 m/s based on the slope of the line.
Explanation:
The question pertains to analyzing a position vs. time graph of an object in motion to determine its starting position, velocity, and other characteristics of its motion. Given the description of a graph where a straight blue line runs with an upward slope from 0 seconds at 3 meters to 4 seconds at 15 meters, we can infer several key details about the object's movement.
The starting position of this object is 3 meters. This is inferred from the graph's indication that at 0 seconds, the object is at 3 meters.
The object is traveling at a velocity calculated from the slope of the line on the position vs. time graph. The velocity can be found using the formula velocity = (final position - initial position) / (final time - initial time). Substituting the given values, velocity = (15 meters - 3 meters) / (4 seconds - 0 seconds) = 12 meters / 4 seconds = 3 m/s.
This scenario highlights the concepts of initial position, velocity, and the relationship between slope on a position vs. time graph and the velocity of an object in motion.
the instantaneous speed at 2 seconds is **0 m/s** since the position remains constant, and the average speed over the entire trip is **1 m/s** based on the information provided by the position-time graph.
To determine the instantaneous speed at 2 seconds and the average speed over the entire trip from the given position-time graph with three straight segments, we can analyze the information provided. Here's how we can approach this:
1. **Instantaneous Speed at 2 Seconds**:
- Since the graph provides position values at specific time points, we can find the instantaneous speed at 2 seconds by looking at the slope of the graph at that point.
- At 2 seconds, the position is not explicitly given. We can infer it based on the straight segments. The position remains constant at 12 meters from 4 seconds to 6 seconds.
- Therefore, at 2 seconds, the position is 12 meters. To find the instantaneous speed, we need to calculate the slope of the line connecting the points at 2 seconds and a nearby point, which is 4 seconds.
- The change in position is 12 meters - 12 meters = 0 meters (since the position remains constant), and the change in time is 4 seconds - 2 seconds = 2 seconds.
- As a result, the instantaneous speed at 2 seconds is 0 meters per 2 seconds = **0 m/s**.
2. **Average Speed over the Entire Trip**:
- The average speed over the entire trip can be calculated by dividing the total distance traveled by the total time taken.
- The object travels from 0 meters to 12 meters (12 meters) and then back to 0 meters (12 meters total distance). The total time taken is 12 seconds (0 to 12 seconds).
- Therefore, the average speed over the entire trip is 12 meters / 12 seconds = **1 m/s**.
In summary, the instantaneous speed at 2 seconds is **0 m/s** since the position remains constant, and the average speed over the entire trip is **1 m/s** based on the information provided by the position-time graph.
The probable question maybe:
A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). The line runs in 3 straight segments from 0 seconds 0 meters to 4 seconds 12 meters to 6 seconds 12 meters to 12 seconds 0 meters.
Use the graph to determine the instantaneous speed at 2 seconds.
m/s
What is the average speed over the entire trip?
Which of the following statements must be true about this prism's critical angle for the violet light shown below?
A. The critical angle is exactly 47º.
B. The critical angle is greater than 47°.
C. The critical angle is less than 47°.
D. This question cannot be answered without knowing how light of other colors would behave.
Answer: C. The critical angle is less than 47°.
Explanation:
The critical angle is the angle such that the refracted beam is parallel to the surface of the prism, so we will have total internal refraction
This comes from the snell law:
n1*sen(a1) = n2*sen(a2)
where n1 is bigger than n2.
Then:
sen(a1) = (n2/n1)*sin(a2)
n2/n1 is smaller than 1, so the right side only can go up to (n2/n1)*1 (when a2 = 90°)
sen(a1) = n2/n1
this equation defines our critical angle.
If we use an angle bigger than the critical angle, we still have a total internal reflection, so we will no see a refracted beam.
In the image, we can see that the angle between the beam and the normal to the surface of the prism is 47°, and we also can see that we have a refracted beam, this means that 47° must be smaller than the critical angle.
So the correct option is C.
Answer:
B. The critical angle is greater than 47°.
Explanation:
Explanation: Light is reflected back into a prism whenever the angle of incidence is greater than the critical angle. When the angle of incidence is less than the critical angle, the light refracts as it exits the prism. In this case, the violet light is refracted as it exits the prism, so the critical angle must be greater than 47°. Also, you can conclude that all other colors of visible light will be refracted as it exits the prism. Shorter wavelengths (at the violet end of the spectrum) are the "first" to be reflected. If violet light is not reflected, then no visible light will be reflected.
Can you change how much power you use while exercising?
Answer:Most treadmills and stationary bikes use electricity, but what if you could produce electricity while exercising? With a pedal-power generator, you can! And you can use the electricity immediately to power a television, computer, stereo or other electronics — or store it in batteries to use it later.
Explanation:
A dog whistle is designed to produce a sound with a frequency beyond that which can be heard by humans (between 20,000 Hz and 27,000 Hz). If a particular whistle produces a sound with a frequency of 25,000 Hz, what is the sound’s speed? Assume the wavelength of this sound wave in air is 0.013m. *
4 points
325 m/s
250 m/s
113 m/s
467 m/s
Answer:
Speed of the sound in air is 325 m/s
Explanation:
As we know that the frequency of the sound is given as
[tex]f = 25000 Hz[/tex]
wavelength of the sound is given as
[tex]\lambda = 0.013 m[/tex]
now we have
[tex]v = \lambda f[/tex]
so we have
[tex]v = (0.013)(25000)[/tex]
[tex]v = 325 m/s[/tex]
Final answer:
The speed of the sound produced by a dog whistle with a frequency of 25,000 Hz and a wavelength of 0.013m is 325 m/s.
Explanation:
The speed of a sound wave can be calculated using the relationship speed = frequency times wavelength. Given a whistle that produces a sound with a frequency of 25,000 Hz and a wavelength of 0.013m, we can find the speed of this sound wave in air. By multiplying the frequency by the wavelength, 25,000 Hz imes 0.013m, we get 325 m/s. Therefore, the speed of the sound produced by the whistle is 325 m/s.
Two stars that orbit each other are called a binary star system.
TRUE
FALSE
Answer:
TRUE
Explanation:
A binary star is a star system consisting of two stars orbiting around their common barycenter. Systems of two or more stars are called multiple star systems.
Answer:
True
Explanation:
what evidence can you present for the possibility of time travel?
The Mandela effect is a good example of time travel
what is Mandela effect ?The Mandela effect is a false memory effect occur when many different people incorrectly remember the same thing.
It is widespread and it is a false memory by Nelson Mandela, South African human rights activist, an eventual president, died in prison in the 1980s.
When a group of people misremembers the Mandela effect is occurred, it is a historical event or person.
Nelson Mandela did not die in prison in the 1980s. After serving 27 years in prison, Mandela became president of South Africa from 1994–1999. He died in 2013.
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Samantha and Emily are pushing a box of textbooks in the same direction across their classroom. Samantha is applying a force of 10 newtons, and Emily is applying a force of 10 newtons. What is the net force of their efforts?
Final answer:
The net force of Samantha and Emily's efforts is 20 newtons.
Explanation:
The net force of Samantha and Emily's efforts is 20 newtons. When two forces are applied in the same direction, their magnitudes can be added to find the net force. In this case, Samantha and Emily are both applying a force of 10 newtons, so the total force is 10 newtons + 10 newtons = 20 newtons.
What is the maximum amount of potassium nitrate (KNO3) that can dissolve in 100 grams of water at 40°C?
A.
25 grams
B.
50 grams
C.
62 grams
D.
75 grams
Answer: 62 gram
Explanation:
Using attached solubility graph
This solubility graph tells us the amount of potassium nitrate that can be dissolved per 100g of water in order to have a saturated solution of potassium nitrate at a given temperature.
In order to find the solubility of the salt at 40∘C, start from the 40∘C mark on the graph and move up until you intersect the curve. At the point of intersection, move left until you intersect the y axis and read off the value that you land on.
In this case, you can estimate that the solubility of potassium nitrate in water at 40∘C is equal to about 62g
This tells you that a saturated solution of potassium nitrate will hold about 62 g of dissolved salt, i.e. of dissociated salt, per 100g of water at 40∘C.
Please find the attached file for the graph.
waxing or waning moon?
Answer:
waning gibbious
Explanation:
What does the air of the air capacitor represent in an electrical capacitor?
The parallel conducting plates
The source of electrical current
The insulation between plates
The charged plate of a magnetic field
Answer:
The source of electrical current
Explanation:
i got it right
It presents the electrical current source.
Air capacitor:Air capacitors are those capacitors that use air as their dielectric. The simplest air capacitors should be comprised of two conductive plates separated by an air gap. So when there is the source of electrical current so it present the electrical capacitor.
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Explain what happens when a ferromagnetic material is made into a permanent magnet.