The angular acceleration of the fan is 0.740 rad/s^2,
Angular acceleration which represents the rate at which the angular velocity changes over time. The unit used to measure angular acceleration is radians per square second (rad/s2), according to the International System of Units. The Greek alphabet symbol alpha (α) is used to denote angular acceleration.
To calculate the angular acceleration of the fan, the formula α = Δω/Δt is used. Here, α represents angular acceleration, Δω represents the change in angular speed, and Δt represents the change in time.
In this scenario, Δω is equal to 10.0 - 6.30 = 3.70 rad/s, and Δt is equal to 5.00 s. By substituting these values into the formula, we obtain α = 3.70/5.00 = 0.740 rad/s^2.
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if an object has a smaller density than water, will the object stay fully submerged, partly submerged, or rise completely out of the water when it is released underwater
If an object has a smaller density than water, it will partially submerge in water. This is because of Archimedes' principle, which states that an object will float in a fluid if its weight is less than or equal to the weight of the fluid displaced by the object.
If the object's density is less than that of water, it will displace a volume of water that weighs more than the object, causing it to float partially.
The extent to which the object will submerge depends on the difference between its density and that of water. If the difference is small, the object will float only slightly below the surface of the water. On the other hand, if the object's density is much less than that of water, it will float high above the surface of the water, partially submerged.
It is worth noting that an object with a density that is much less than that of water will eventually rise to the surface of the water. This is because the buoyant force acting on the object increases as the object rises, eventually exceeding the object's weight and causing it to float to the surface.
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If a 60 W light bulb and a 75 W light bulb operate from 150 V source, which bulb has a greater current in it?
60 W
75 W
Answer:
Since it us the resistance that causes the power output, it might be intuitive to think that more resistance produces more power but as P=I^2 * R one actually needs high current and low resistqnce. That means 75 W has lower resistance and higher current.
Now you may think that making the resistance very low, one gets the most power. Not so, as the circuit has wires, power source etc. All the have their resistance. In theory one gets the maximum power over a resistor when the resistor is half of the total resistance of the circuit. This in practice would be inefficient as one would lose half of the total power elsewhere. In practice circuits have fuses that limit the current and one gets the maximum power at the current the fuse is rated to. So if there is 20 A fuse, the maximum power is 2400 W and the corresponding resistance 6 ohm.
What is the final velocity of an object that accelerates from rest at 3, point, 5, m, slash, s, squared,3.5m/s
2
for 8, point, 5, s,8.5s?
The final velocity of the object is 29.75 m/s.
What is acceleration?Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).
The acceleration of the object = 3.5 m/s²
The initial velocity of the object = 0 m/s.
Time interval = 8.5 second.
Hence, form basic kinematics, we can write the final velocity becomes = initial velocity + acceleration × time interval
= 0 + 3.5 × 8.5 m/s
= 29.75 m/s
Hence, the final velocity of the object is 29.75 m/s.
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Your question is incomplete but most probably the question was:
What is the final velocity of an object that accelerates from rest at 3.5m/s² for 8.5 s?
Which structural damage could be expected if a Category 3 hurricane is predicted to hit an area?(1 point)
Well-built framed homes could sustain severe damage, with loss of most of the roof structure and some exterior walls.
Well-constructed frame homes could have damage to the roof, shingles, vinyl siding, and gutters.
A high percentage of framed homes could be destroyed, with total roof failure and wall collapse.
Well-built framed homes could incur major damage or removal of roof decking and gable ends.
The structural damage which could be expected if a Category 3 hurricane which is predicted to hit an area is high percentage of framed homes could be destroyed, with total roof failure and wall collapse and is denoted as option C.
What is Hurricane?This refers to the rapidly rotating storm which has a low-pressure center and is characterized by strong winds ad thunderstorms and of different types such as category 1 to 3.
Category 3 hurricane leads to loss of lives and properties which is depicted as framed homes being destroyed with total roof failure and wall collapse which is why option C was chosen.
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10. Analyze What is the wavelength of these waves?
Answer:
Wavelength is the distance between the two closest points that are in phase with each other along a wave.
Explanation:
Voyager 1 and Voyager 2. (Note that Plagiarism will result in an automatic Zero. Do not cut and paste. Put things in your own words. please.)
Your job is to research the following two famous satellites and report on the following information about both. Make sure to be specific about what information goes with with one.
1. When were they launched?
2. What were there purposes?
3. Which nation/s were involved in building them?
4. What information have they sent back to earth?
5. What did scientists put on them for extra terrestrial life to find? Make sure to list them and describe what they are and do.
6. Are they still working?
7. Where are they located and where are they going?
8. How fast are they traveling?
9. At least on interesting fact about each.
NEXT - Research at least 5 more satellites and find the following information about them.
1. When were they launched?
2. What were their purposes?
3. Which nation/s were involved in building them?
4. What information have they sent back to earth?
5. How much did they cost to build?
6. Are they still working?
7. Where are they located and where are they going?
8. How fast are they traveling?
9. At least on interesting fact about each.
10. Copy and past a picture of each onto your page.
The voyager program was a space exploration program created to be the first to travel and explore the outer reaches of our solar system and beyond.
The voyager space probes were launched in 1977 and are still functional to this day, making them the longest running space exploration mission. The purpose of the voyager space probes is to relay information back to earth on the various planets and interplanetary objects they fly by.
Through these missions, NASA has received information regarding:
Jupiter's cloud formations and storm systems Volcanic activity on the Jupiter moon of IoInteresting discoveries about the rings of Saturn Voyager 2 discovered a huge magnetic field surrounding Uranus 10 additional moons seen to orbit Uranusand much more, making it already an extremely successful mission.
The voyager spacecrafts were designed and built by the United States of America with government funding and contributions from other renowned space agencies.
As of 2021, voyager 1 is moving with a velocity of 61 thousand km per hour , with voyager 2 moving at roughly 55 thousand km per hour putting them beyond the outer reaches of the inner solar system. This along with the many important finds they are responsible for make them worth the 890 million dollars they cost to build.
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Nuclear Fission vs nuclear fusion worksheet answers
a car has a mass of 1200 kg. what would be its weight on earth?
Answer:
11772 N
Explanation:
\(\boxed{w = mg}\)
w= weight
m= mass
g= acceleration due to gravity
The acceleration due to gravity on earth is 9.81m/s².
Substitute m= 1200 and g= 9.81 into the formula:
w= 1200(9.81)
w= 11772 N
6. A technician examines different electrical devices to determine the one that is the most
energy efficient. While conducting a test, he notes that one of these devices consumes
550 000 J of energy and loses 315 000 J at the same time. What is the energy efficiency
of this device?
A)
42.7%
B) 57.2%
D) 174.6%
C) 68.1%
A) 42.7% is the energy efficiency of the device.
Energy efficiency is a measure of how much energy is wasted. There are several ways to save energy, especially thermal energy, and the rate at which it is lost needs to be slowed down. Energy efficiency is defined as requiring less energy to complete an activity or reach a goal. Homes, structures, and production facilities that use less energy to create their products also consume less energy to heat, cool, and run gadgets and appliances.
Energy efficiency is one of the most straightforward and cost-effective ways to halt global warming, reduce consumer energy costs, and increase the competitiveness of American businesses. Energy efficiency is also a key component in the decarbonization process to attain net-zero emissions of carbon dioxide.
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Anna wanted to see what battery lasts the longest she put each batter into a clock and recorded the time that the clock stopped she use their sale energizer Kroger brand and everybody what is the constant
Answer:
The resistance of the clock circuit.
Explanation:
In electricity, the potential difference or voltage is the drive force. It is known as the electromotive force in a battery or generator. The potential difference is the difference in the higher terminal and the lower terminal of the circuit. The potential difference forces electrons to move in an orderly fashion, from the higher potential to the lower potential; this flowing electrons is what is called the current of the circuit. When the electrons flow, they meet a certain amount of resistance. This resistance is unique to the material of the circuitry, and does not change in a circuit. The value of the resistance of the circuit remains the same, even when the potential difference of the electrical energy source is depleted, and current stops to flow.
a uniform meter stick is freely pivoted about the 0.20m mark. if it is allowed to swing in a vertical plane with a small amplitude
The period of the pendulum is approximately 2.01 seconds.
The period of a simple pendulum is determined by its length and the acceleration due to gravity. In this case, the length of the pendulum is 0.20 meters.
The period (T) of a pendulum can be calculated using the formula:
T = 2π√(L/g)
where L is the length of the pendulum and g is the acceleration due to gravity.
Substituting the given values into the formula:
T = 2π√(0.20/9.8)
Calculating the expression:
T ≈ 2π√(0.0204)
T ≈ 2π(0.143)
T ≈ 0.902π
T ≈ 2.01 seconds
Therefore, the period of the pendulum is approximately 2.01 seconds.
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The potential difference across the ends of a wire is doubled in magnitude. If ohm’s law is obeyed, which one of the following statements concerning the resistance of the wire is true?.
The potential difference across the ends of a wire is doubled in magnitude. If ohm’s law is obeyed, the resistance is not changed. Thus, option A is correct.
What is current?The current is the stream of charges which flow inside the conductors when connected across the end of voltage.
From Ohm's law, V =IR
Here, R is the proportionality constant called the resistance of the resistor.
The complete question is given in the image attached.
The potential difference across the ends of a wire is doubled in magnitude.2V = IRR =2 V/IAs, the resistance is a constant value, it does not change.
The following statements concerning the resistance of the wire true is :
The resistance is not changed
Thus, the correct option is A.
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Look at the diagram. Both cars start from the same point. Which describes the motion shown?
A:One car travels south at 4 m/s. The other car travels east at 2 m/s.
B:One car travels north at 4 m/s. The other car travels west at 2 m/s.
C;One car travels north at 2 m/s. The other car travels east at 4 m/s.
D: One car travels south at 4 m/s. The other car travels west at 2 m/s. 7 of 10
The original photo wouldn't load...
Answer: The answer is C.
Explanation: C is the correct answer. The magnitude of the vector increases with the length of the line. Consider a compass when it comes to direction.
The point on the graph that lies on the y-axis (vertical axis) is called the y-intercept. What does the y-intercept tell you about the runner? ( look at photo)
the ending position of the runner
Choices:
the runners distance from the state
the starting position of the runner
the runners speed
Answer:
The starting position of the runner.
Explanation:
When you look at the graph, you can see that the first point on the graph is twenty on the y-axis.
The runner starts at twenty, and ends at thirty.
Therefore, the runner starts at twenty on the y-axis, so it's the starting position of the runner.
The y-intercept tell you about the starting position of the runner.
What is y-intercept of a function?The intersection of the graph of the function with the y-axis gives y-intercept of that function. The y-intercept is the value of y on the y-axis at which the considered function intersects it.
Assume that we've got: y = f(x)
At y-axis, we've got x = 0, so putting it will give us the y-intercept.
Thus, y-intercept of y = f(x) is y = f(0)
When we look at the graph, we can see that the first point on the graph is twenty on the y-axis.
The runner starts at twenty and ends at thirty.
Thus, the runner starts at twenty on the y-axis, so it is the starting position of the runner.
The y-intercept tell you about the starting position of the runner.
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What causes an electrical current in a wire? Question 1 options: Electric fields cause atoms to move in a wire Electrons build up in the wire and create a charge Electrons flow because of electrical attraction and repulsion Electrons move because of heat.
The cause of electric current in a wire is that there is electron flow due to electrical attraction and repulsion.
What is Electric current?
The rate of flow of electric charge through a point is known as electric current. The electric current is nothing but the flow of electrons in general.
Consider a space, when electrons of charge (e) is flowing through the space in a given time interval t. Then,
I = e/t
here,
I is the electric current.
Moreover, there is a flow of electrons in a wire due to a potential difference existing at the circuit. Due to that, electrons always flow from high electric potential to low electric potential.
Thus, we can conclude that the cause of electric current in a wire is that there is electron flow due to electrical attraction and repulsion.
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A spherical shell has an outside radius of 2.60 cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.70 g/cm3. The space inside the shell is filled with a liquid having a density of 1.23 g/cm3. (a) Find the mass m of the sphere, including its contents, as a function of a. (b) In the answer to part (a), if a is regarded as a variable, for what value of a does m have its maximum possible value
Answer:
The answer is below
Explanation:
a) The volume of a sphere is:
Volume = (4/3)πr³; where r is the radius of the shell.
Given the outside radius of 2.60 cm and inner radius of a cm, the volume of the spherical shell is:
Volume of spherical shell = \(\frac{4}{3} \pi (2.6^3-a^3)\) cm³
But Density = mass / volume; Mass = density * volume.
Therefore, mass of spherical shell = density * volume
mass of spherical shell = \(4.70\ g/cm^3\) * \(\frac{4}{3} \pi (2.6^3-a^3)\) cm³
Mass of liquid = volume of inner shell * density of liquid
Mass of liquid = \(\frac{4}{3} \pi a^3\ cm^3*1.23\ g/cm^3\)
Total mass of sphere including contents = mass of spherical shell + mass of liquid
Total mass of sphere including contents (M) = \(4.70\ g/cm^3\) * \(\frac{4}{3} \pi (2.6^3-a^3)\ cm^3\) + \(\frac{4}{3} \pi a^3\ cm^3*1.23\ g/cm^3\) =
Total mass of sphere including contents (M) = (346 - 14.5a³) grams
b) The mass is maximum when the value of a = 0
M = 346 - 14.5a³
M' = 43.5a² = 0
43.5a² = 0
a = 0
The steps for conducting a basic search are listed below. Put the steps in the correct order.
step 1:
step 2:
step 3:
step 4:
1.
Navigate to a search engine.
2.
Form a question.
3.
List the keywords.
4.
Enter the keywords and press Enter.
The steps for conducting a basic search are put in the order below:
Step 1. Navigate to a search engine.
Step 2. Form a question.
Step 3. List the keywords.
Step 4. Enter the keywords and press Enter.
What is basic research?Basic research can be used to learn more about a particular issue; it might not produce an idea or a solution, but it can be used to develop theories and scientific understanding.
Fundamental information from basic research can be used to carry out applied research. Applied research is utilized to address relevant, concrete issues. Research into and examination of materials and sources with the goal of establishing facts and drawing new findings.
Therefore, the correct order is:
Step 1. Navigate to a search engine.Step 2. Form a question.Step 3. List the keywords.Step 4. Enter the keywords and press Enter.To learn more about basic research, refer to the link:
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The question is incomplete. Your most probably complete question is given below:
Form a question.
Enter the keywords and press Enter.
Navigate to a search engine.
List the keywords.
the the potential energy of a 0.15 kg pendulum is 10 j at the top of its swing, what is its kinetic energy at the bottom?
Because energy will be conserved, its kinetic energy will be equal to its potential energy at the top which is 10 J
Conservation of EnergyConservation of energy state that energy can not be destroyed nor created, but can only be transformed from one form to another. The mechanical energy of a swinging pendulum is always constant. The potential energy of the object convert to kinetic energy and vice versa.
Given that the potential energy of a 0.15 kg pendulum is 10 j at the top of its swing.
At the top, the maximum energy = P.E
At the bottom, the maximum energy = K.E
Since energy will always be conserved, its kinetic energy at the bottom will be equal to its potential energy at the top.
The given parameters are;
P.E = 10 JM = 0.15 KgThen, K.E = P.E = 10 J
Therefore, its kinetic energy at the bottom is 10 J
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Forces affect motions in living and nonliving things. In a human, swallowed food moves down the esophagus into the stomach, even if the human is upside down doing a handstand. Which force moves food through the esophagus into the stomach?
Answer:
figured it out its d the last one
Food is moved through the esophagus by the push force created by esophageal contractions. Option D is the right response as a result.
What is the second law of Newton?The resultant force exerted on an object is proportional to the rate of change of momentum, according to Newton's Second Law.
Food is forced into the stomach by the constriction of the esophagus during the process of traveling down it.
As food travels down the esophagus, it is driven into the stomach by the narrowing of the esophagus.
Option D is the right response as a result.
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When walking barefoot, Kevin can walk across the grass easily, but when he crosses the paved street, the street is hot and burns his feet. At the beach he walks quickly across the hot sand to the cool water. Why do some substances feel hot to his feet and others do not? Radiation is heat transfer through waves. Specific heat is the amount of energy required to raise the temperature of a substance 1 degree C.
suppose that a motorboat is moving at ft/s when its motor suddenly quits, and that s later the boat has slowed to ft/s. assume that the resistance it encounters while coasting is proportional to its velocity, so that dv/dtkv. how far will the boat coast in all?
The boat will cost a total of 287.7 feet.
Using calculus, we can find that the equation for the velocity of the boat at any given time is\(v(t) = 90e^(-0.1t)\). We can then integrate this equation to find the total distance the boat travels while coasting.
Integrating v(t) from t=0 to t=s, where s is the time it takes for the boat to slow to 30 ft/s, we get:
\(∫(0 to s) 90e^(-0.1t) dt = 900(-e^(-0.1s) + 1)\)
We know that at s seconds, \(v(s) = 30 ft/s\), so we can solve for s:
30 = 90e^(-0.1s)
s ≈ 6.848 seconds
Substituting this value of s into our previous equation, we get:
\(900(-e^(-0.1(6.848)) + 1) ≈ 287.7 feet\)
Therefore, the boat will coast a total of 287.7 feet before coming to a complete stop.
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the average turtle can walk 3 meters per hour, how far can the turtle walk in three minutes
Answer:
0.15m i tink blablablablabla
After the block slides down the loop from point c to point d, it enters the rough portion of the track. the
speed of the block at point e is half the speed of the block at point d.
determine the speed of the block at point d, just before it enters the rough portion of the track.
The speed of the block at point d, just before it enters the rough portion of the track is 1/2m.(c² + 2 ΔU/m).
To determine the speed of the block at point d, just before it enters the rough portion of the track, we need to consider the conservation of energy. According to the law of conservation of energy, the total mechanical energy (kinetic + potential) of an isolated system remains constant if no external work is done.
Let's assume that the speed of the block at point c is Vc. When the block moves from point c to point d, it gains potential energy due to its height, and this potential energy is converted into kinetic energy. Thus, at point d, the kinetic energy of the block is equal to the difference between the potential energy at point c and the potential energy at point d.
= Kd
= Kc + ΔU
here Kd is kinetic energy of the block at point d,
Kc is kinetic energy of block at point c,
and ΔU is change in potential energy.
Next, we can use the relationship between kinetic energy and speed:
= K
= (1/2)mV²
= (1/2)md²
= (1/2)mc² + ΔU
here d is speed of the block at point d.
Solving for d:
= d²
= c² + 2 ΔU/m
At point e, the speed of the block is half the speed at point d. Let's call this speed "e". Then, using the relationship between kinetic energy and speed:
= (1/2)me²
= (1/2)md²
adding d from above:
= (1/2)me²
= (1/2)m(c² + 2 ΔU/m)
Solving for e:
= e²
= c² + 2 ΔU/m
Dividing both sides by 2:-
= e
= \(\sqrt{(c^2 + 2 ΔU/m)/2}\)
Since e = d/2, we can write:
= d
= 2e
= 2 √(c² + 2 ΔU/m)/2
= √(2c² + 4 ΔU/m)
Thus, the speed of the block at point d is equal to the square root of the sum of the square of its speed at point c and twice the change in potential energy.
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PSYCHOLOGY:
A mnemonic device is a strategy used to improve memory.
True or false.
Answer:
True
Explanation:
A mnemonic device is a method employed to make the memory have the ability to remember things, improve the memory, and generally improve the long term ability of the memory such that the brain develops more ability to store information until when needed and collect the stored information when needed. This is achievable when the information that needed to be remembered are stored using rhymes of songs, abbreviations of words using the initial letters. For example, "MR NIGER D" can be used to store the characteristics of living things like:
M - movement
R - Respiration
N - Nutrition
I - Irritability
G - Growth
E - Excretion
R - Reproduction
D - Death
Answer:
true
Explanation:
edge2020
What do seismic waves and sound waves have in common?
the _____ element is used to mark the form controls that are designed to receive user responses.
The <input> element is used to mark the form controls that are designed to receive user responses.
The <input> element is a self-contained element in HTML that creates a form control widget. It can be used to create a wide variety of form controls, including text boxes, password fields, checkboxes, radio buttons, and many others.
By specifying different attributes on the <input> element, developers can customize the appearance and behavior of the form controls, such as setting a default value, defining a maximum length, or specifying a validation pattern.
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The temperature of the air in a valley begins to increase after the sun comes up and heats the valley floor. What will
happen to the velocity of sound in this valley?
-The velocity will increase
-The veocity will decrease
-The velocity will not change
-The velocity will drop to zero.
Explanation:
I think it will increase a little bit ... just image ... if the temperature is 0, the velocity will be 0 too. because the vibration of atom is so weak and the sound cant progation.
Answer:
The velocity will increase.
Explanation:
Wave velocity and the temperature of the medium are directly proportional so if the temperature increases, the velocity will increase.
The Earth’s ________________ on its ________ causes day and night.
Answer:
1. rotation. 2. axis
Explanation:
The Earths rotation on its axis causes day and night
guys please helpp!!!!1
Answer:
Position A/Position E
\(K = E\), \(U = 0\)
Position B/Position D
\(K = (1-x)\cdot E\), \(U = x\cdot E\), for \(0 < x < 1\)
Position C
\(K = 0\), \(U = E\)
Explanation:
Let suppose that ball-Earth system represents a conservative system. By Principle of Energy Conservation, total energy (\(E\)) is the sum of gravitational potential energy (\(U\)) and translational kinetic energy (\(K\)), all measured in joules. In addition, gravitational potential energy is directly proportional to height (\(h\)) and translational kinetic energy is directly proportional to the square of velocity.
Besides, gravitational potential energy is increased at the expense of translational kinetric energy. Then, relative amounts at each position are described below:
Position A/Position E
\(K = E\), \(U = 0\)
Position B/Position D
\(K = (1-x)\cdot E\), \(U = x\cdot E\), for \(0 < x < 1\)
Position C
\(K = 0\), \(U = E\)
earth's temperature remains fairly steady, which means that earth must return nearly the same amount of energy to space that it receives from the sun. in what form(s) does earth return most of this energy to space? check all that apply. view available hint(s)for part b earth's temperature remains fairly steady, which means that earth must return nearly the same amount of energy to space that it receives from the sun. in what form(s) does earth return most of this energy to space?check all that apply. infrared light emitted by the surface and atmosphere visible light emitted by the surface and atmosphere ultraviolet light reflected by the surface visible light reflected by clouds visible light reflected by the surface
Earth returns most of the energy it receives from the sun back to space in the form of infrared light emitted by the surface and atmosphere. This process is called radiation.
The temperature of Earth's surface and atmosphere is regulated by the balance between incoming solar radiation and outgoing infrared radiation. If this balance is disrupted, the temperature of Earth can change. The other options listed, such as visible light emitted or reflected by the surface and atmosphere, and ultraviolet light reflected by the surface, are not the primary forms of energy that Earth returns to space. In summary, Earth's temperature remains steady because it radiates most of the energy it receives from the sun back into space in the form of infrared radiation.
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