If the students continue travelled at the same speed, the statement that describes the total distance traveled in 90 seconds is "student # 1 traveled 75 m, and student #2 traveled 45 m," hence option B is correct.
To find the total distance moved by each student in 90 seconds, it is required to find the distance covered per second and then multiply it by 90.
To find for student 1:
Distance traveled per second = Distance traveled in 60 seconds ÷ Time taken in 60 seconds:
= 50 m ÷ 60 s
= 0.833 m/s
Total distance traveled in 90 seconds = Distance traveled per second × Time taken in 90 seconds:
= (0.833 m/s) × 90 s = 75 m
For student #2:
Distance traveled per second = Distance traveled in 60 seconds ÷ Time taken in 60 seconds
= 30 m ÷ 60 s = 0.5 m/s
Total distance traveled in 90 seconds = Distance traveled per second * Time taken in 90 seconds
= (0.5 m/s) × 90 s = 45 m
Thus, the correct statement is: Student 1 traveled 75 m, and Student 2 traveled 45 m.
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Someone says, "When we burn coal, we are using the energy of ancient sunlight." Write a scientific explanation of what this means.
Please help ASAP please
Answer:
Explanat WRITE A ONE PAGE ESSAY TO EXPLAIN THE AUTHOR'S PURPOSE IN WRITING HOM SMART ARE ANIMAL
A wave has a frequency of 500 Hz and a wavelength of 20m. At what speed is this wave traveling?
A. 1000 Hz
B. 1000 m
C. 10,000 m
D. 10,000m/s
Pls help!!!
Answer:
may be answer is 1000 HZ
The amount of variation in the tilt of earth's axis is due to the gravitational effect of which body?
The amount of variation in the tilt of the earth's axis is due to the gravitational force of the Moon
According to the Law of Universal Gravitation force, a force that attracts one particle to another is directly proportional to the product of the two masses and inversely proportional to the square of their distance from one another.
The gravitational force is caused by the gravitational pull of two objects on one another is stronger the more mass they have and the closer they are to one another. The energy holding the gases inside the sun. the power behind a ball's descent after being thrown into the air. the force that makes an automobile coast downhill even when the gas is not depressed. the force behind a glass you dropped falling
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A cougar jumps to a height of 3. 25 m when leaving the ground at an angle of 41. 0°. What is its initial speed (in m/s) as it leaves the ground? m/s?
The initial speed of the cougar is 12.17 m/s.
The jumping of a cougar represents a case of projectile motion.
In projectile motion the maximum height(H) is given by the following formula:
H = u^2 sin^2(θ)/2g
Here u = initial speed
θ = angle at which the cougar leaves the ground
g = acceleration due to gravity
Putting H= 3.25 m and sin(θ) = 41°
3.25 = u^2 sin^2(41)/2g
u^2 = 3.25 x 2g/sin^2(41)
u^2 = 3.25 x 2 x 9.8/( 0.65)^2
u^2 = 147.99
u = √147.99
u = 12.17 m/s
Thus, The initial speed of the cougar is 12.17 m/s.
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What muscle movement do we use to close a joint.
Answer: Your using your skeletal muscle
Explanation:
Please the answer with steps
Answer:
Is safe to use the bag.
Explanation:
To solve this problem we must use Newton's second law which tells us that the resulting force is equal to the product of mass by acceleration.
F = m*a
where:
F = force [N] (units of Newtons)
m = mass = 15 [kg]
a = acceleration = 7 [m/s²]
Now replacing these values in the previous equation:
F = 15*7
F = 105 [N]
F < 230 [N]
The force of 105 [N] is lesser than the maximum resistance force, therefore is safe to use the bag.
What statement describes a way electromagnetic waves are different from mechanical waves
Answer:
electromagnetic waves can travel through a vacuum where as mechanical waves have to have a medium to travel
Explanation:
A .5kg book sits on top of a student's desk which is 9m high. How
much gravitational potential energy does the book have as it sits on the desk?
Answer:
441J
Explanation:
Given parameters:
Mass of book = 5kg
Height = 9m
Unknown:
Gravitational potential energy = ?
Solution:
The gravitational potential energy of a body is the energy due to the position of the body.
It is given as:
Gravitational potential energy = mass x acceleration due to gravity x height
Gravitational potential energy = 5 x 9.8 x 9 = 441J
Try moving the magnet in the different ways described in the table below,. Record your observations in the second column of the table. MotionMove the magnet straight through the coil, leading with the north pole. Once the magnet is completely through, move it back to its original position. Move the magnet straight through the coil, only this time leading with the south pole. Once the magnet is completely through, move it back to its original positionPut the magnet in the center of the coil, but don't move it. Put the magnet on the outside of the coil. Repeatedly move it up and down while outside of the coil. Keeping the magnet outside of the coil. Repeatedly move it back and forth horizontally.Place the magnet back inside of the coil. Now repeatedly switch the polarity of the magnet by pressing the button toward the bottom-right of the page over and over again.
Base on the experiment, we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.
What is Faraday's law of electromagnetism?Faraday's law of electromagnetism states that the negative rate of change of time (Δt) of the flux of the magnetic field (∅) through a surface is directly proportional to the flux (∅) of the electric field through a surface that has the loop as its boundary.
Electric generators are primarily designed and developed to use the properties of electromagnetism to convert kinetic energy (KE) that is possessed due to motion, into electrical energy. Thus, we can deduce that the mode of operation or working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.
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Answer:we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.
Explanation:
Which energy conversion takes place when a solar cell is used to light a street lamp?
what is the approximate noontime (maximum) sun angle in sacramento on the december solstice? (hint: sac's latitude is approx. 39.5°n)
Answer:
Below
Explanation:
The earth ( for the northern hemisphere) is tilted away 23.5° from the sun on the solstice....this lowers the sun in the sky
Sacramento is already 39.5 degrees from equator
90 - 39.5 - 23.5 = 27 degrees high
The approximate noontime (maximum) sun angle in Sacramento on the December solstice is about 27 degrees.
The approximate noontime (maximum) sun angle in Sacramento on the December solstice can be calculated using the following formula:
Maximum Sun Angle = 90° - Latitude + Declination
Where:
Latitude = 39.5°N (latitude of Sacramento)
Declination = -23.5° (declination angle on the December solstice)
Plugging in the values, we get:
Maximum Sun Angle = 90° - 39.5° + (-23.5°)
Maximum Sun Angle = 27°
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One clue we can observe that means a chemical reaction has occurred is the formation of light. What is one chemical reaction you can think of that causes light?
Answer:
There are five signs of a chemical change:
Color Change.
Production of an odor.
Change of Temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)
Explanation:
I just went ahead and gave you the five signs of chemical change hoped it helped
calculate the potential energy of a 40 gram sparrow resting on a branch 30 feet above the ground
Answer:
1.43 J
Explanation:
PE = mgh = (0.04 kg)(9.80 m/s2)(3.6576 m) = 1.43 J
You have to convert g to kg, and feet to m
Two runners start at the same point and jog at a constant speed along a straight path. Runner A starts at time t = 0 s, and Runner B starts at time t = 2.5 s. The runners both reach a distance 64 m from the starting point at time t = 25 s. If the runners continue at the same speeds, how far from the starting point will each be at time t = 45 s?
Answer:
See explanation below
Explanation:
First thing to do here, is to calculate the speed of each runner. The problem states that both runners jog at a constant speed. We are given data for both runners, the starting time and the time where both of them reach the same distance.
With these data we can calculate the speed of both runners. Let's do it with runner 1:
If by t = 25 s it reach a 64 m of distance, then his speed:
V = d/t (1)
Replacing we have:
V₁ = 64 / 25 = 2.56 m/s
With this speed we can calculate the distance at t = 45 s so:
d = V * t (2)
d₁ = 2.56 * 45
d₁ = 115.2 mSo Runner 1 will be at 115.2 from the starting point at 45 seconds.
For runner 2, he began at t = 2.5 s, but he reach the 64 m at 25 s, so his speed would be:
V₂ = 64 / (25-2.5) = 2.84 m/s
And the distance at t = 45 s
d₂ = 2.84 * 45
d₂ = 127.8 mRunner 2 is 127.8 m from the starting point at 45 seconds.
Hope this helps
convert the number 86495.0000 into scientific notation where the scientific notation is defined as ×104. enter the correct value for x.
To convert the number 86495.0000 into scientific notation in the form of ×10^4, we need to determine the appropriate value for x. The value of x is 8.6495, and the number 86495.0000 is expressed as 8.6495 × 10^4.
To convert the number 86495.0000 into scientific notation, we need to express it as a product of two components: a decimal value (x) and a power of 10 (10^4). The goal is to rewrite the number in a form where x is a value between 1 and 10.
Starting with the given number 86495.0000, we can move the decimal point to the left until we have a number between 1 and 10. Counting the number of places we move the decimal point will give us the power of 10.
In this case, moving the decimal point four places to the left results in 8.6495. Therefore, the value of x is 8.6495, and the number 86495.0000 in scientific notation is expressed as 8.6495 × 10^4.
By converting the number into scientific notation, we can represent it more compactly and clearly understand its order of magnitude.
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If the ice extended right around the earth, forming a loop that that puck could go around in circles would the puck keep going forever?
If the ice extended right around the earth, forming a loop that the puck could go around in circles, the puck would not keep going forever. The laws of physics would eventually cause the puck to come to a stop. This is because of two factors: air resistance and gravity.
Air resistance is the force that opposes the motion of objects through the air. It is what causes things like parachutes to slow down as they fall. Even if there were no air in the hypothetical scenario of a loop of ice around the earth, there would still be air resistance. This is because the puck would be moving through the magnetic field of the earth, which would create a force that would oppose its motion.Gravity is the force that pulls objects towards each other. It is what keeps us on the ground and the planets in orbit around the sun. In the hypothetical scenario of a loop of ice around the earth, the puck would be subject to the gravitational pull of the earth. As it traveled around the loop, it would lose kinetic energy due to this gravitational force. Eventually, it would come to a stop at the bottom of the loop, where the force of gravity would be the strongest.The speed at which the puck would come to a stop would depend on a number of factors, including the size of the loop, the mass of the puck, and the force of gravity. However, in general, it is safe to say that the puck would not keep going forever if it were to travel around a loop of ice around the earth.For such more question on motion
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Why would geothermal energy NOT be a possible energy source for many regions of the country?
A. Geothermal energy depends upon a nonrenewable resource.
B. Geothermal energy is only found in Arctic regions.
C. Geothermal energy is not always found in an area that is easily accessible.
D. Geothermal energy can only be used to grow tropical fruits.
Geothermal energy is not always found in an area that is easily accessible. (C)
Geothermal energy is not a possible energy source for many regions of the country. Because geothermal energy is not always found in an area that is easily accessible. Option C is correct.
What is geothermal energy?Geothermal energy is the thermal energy in the Earth's crust that comes from the planet's creation and the radioactive decay of components in nearly equal amounts.
The disadvantage of using the geothermal energy is;
A. It is available only in limited areas.
B. It can cause air and groundwater pollution.
C. It is difficult to transport from place to place.
Geothermal energy is not a possible energy source for many regions of the country . Because geothermal energy is not always found in an area that is easily accessible.
Hence, option C is correct.
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right auricale is bigger then left aurical, why?
Explanation:
Veins carry deoxygenated blood from different parts of the body to our heart. ... Since a larger volume of blood is collected in the right auricle than that of the left auricle, right auricle is larger than the left auricle.
Carbon emits photons at 745 nm when exposed to blackbody radiation. How much energy would be obtained if 44g of carbon were irradiated? assume each carbon atom emits one photon.
The energy would be obtained if 44 g of carbon were irradiated is 5.8863 x 10^5 J.
Assume each carbon atom emits one photon. For each photon.
E=hc/lambda
Where h = Plank's constant
C = speed of light
E = (6.625×10^-34)×(3×10^8)/(7.45×10^-7)
E = 2.66819x10^-19 J
So the total energy emitted is
E = E1xn
E = (2.66819x10^-19)×(6.022x10^23)/ 1 mol of carbon atom
E = 5.8863 x 10^5 J
What is black body radiation?Black body radiation is a type of radiation in which a body is in thermodynamic equilibrium, emitted by a black body. It has a specific, continuous spectrum of wavelength. Photons are energy stored in bundles.
In above question,
Wavlength (lambda)=745nm = 7.45x10^-7m.
Mass of carbon = 44 gram
Assume each carbon atom emits one photon. For each photon.
E=hc/lambda
Where h = Plank's constant
C = speed of light
E = (6.625×10^-34)×(3×10^8)/(7.45×10^-7)
E = 2.66819x10^-19 J
So the total energy emitted is
E = E1xn
E = (2.66819x10^-19)×(6.022x10^23)/ 1 mol of carbon atom
E = 5.8863 x 10^5 J
Therefore, The energy would be obtained if 44 g of carbon were irradiated is 5.8863 x 10^5 J.
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A proton and an electron in a hydrogen atom are separated on the average by about 4.8x10-11 m. what is the magnitude and direction of the electric field set up by the proton at the position of the electron?
A proton and an electron in a hydrogen atom are separated on the average by about 4.8x10-11 m. The magnitude and direction of the electric field set up by the proton at the position of the electron is (E)= 6.24×10¹¹ N/C.
What is electric field?The electric field is a field that is created by any positive or negative charge. In an atom the electron or proton that creates a field that called the electric field.
How can we calculate the electric field?To calculate the electric field we are using the formula here ,
E= k(q/r²)
Where we are given,
k= The Coulomb's constant . = 8.99 ×10⁹ N.m²/C²
q= The charge of the electron. = 1.6×10⁻¹⁹ C
r= The distance of separation of atom. = 4.8×10⁻¹¹ m.
We have to calculate the electric field of the atom. = E
Now we put the values we get,
E= k(q/r²)
Or, E= 8.99 ×10⁹×(1.6×10⁻¹⁹/(4.8×10⁻¹¹)²)
Or, E= 6.24×10¹¹ N/C
Now we can say that, The magnitude and direction of the electric field set up by the proton at the position of the electron is (E)= 6.24×10¹¹ N/C.
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This waterbottle has a mass of .5 kg. If the net force acting on the bottle is five and to the right what is the bottles acceleration (hint: use formula a=f/m
Answer:
a = 10/s^2
Explanation:
Answer:
a=10 m/s *2 right
Explanation:
The net force (0.5 kg) divided by the mass (5 N) = 10
The force moved the object to the right.
So you Would put this in the equation a=___ m/s *2 _____
And you would get a=10m/s*2 right
HOPE YOU LEARNED SOMETHING SO WHEN WE GO BACK TO SCHOOL YOU WILL KNOW WHAT YOU ARE TALKING ABOUT ! : )
. Explain What makes the rock cycle a cycle?
SC.7.E.6.2 hi how do you do this
The Rock cycle is a model that describes the formation degradation, and regeneration of rocks as a result of sedimentation magma, and metamorphism. All rocks are made of minerals.
Rock circulation is the process by which rocks change continuously between three types igneous sedimentary and metamorphic. The three processes that transform one rock into another are crystallization, metamorphism erosion, and sedimentation. Any rock can be transformed into another rock by undergoing one or more of these processes. This creates a lock cycle.
Rock circulation is a fundamental concept that describes the transition between three rock types metamorphic igneous, and sedimentary rocks. Simply put it is a set of processes that create and transform rock types within the Earth's crust. Rock cycling by definition is the natural process by which sedimentary igneous, and metamorphic rocks are formed, transformed from one type to another, and destroyed.
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IWhat is a hypothesis?
Answer:
a hypothesis is a explanation made on the basis of limited evidence
Explanation:
Answer:
an hypothesis is an educated guess based on what you already know
Explanation:
hope this helps
what physical processes are at work in the nordic nations
Glacial procedures, tectonic activity, climate systems, seashore, and aquatic procedures are the main physical procedures at work in the Nordic nations, shaping the environment and landscapes of the region.
In the Nordic nations, several physical procedures shape the environment and contribute to the unique characteristics of the region. Some of the prominent physical procedures at work include:
Glacial procedures: Glacial activity has left a significant impact on the landscape of the Nordic nations. Glaciers, through procedures such as erosion and deposition, have shaped fjords, U-shaped valleys, moraines, and other landforms.Tectonic Activity: The Nordic region is located within the tectonically active zone where the Eurasian and North American plates meet. Tectonic procedures, such as plate movements, faulting, and volcanic activity, have shaped the topography and geology of the region.Climate Systems: The Nordic nations experience diverse climate systems influenced by factors such as latitude, ocean currents (e.g., the Gulf Stream), and atmospheric circulation patterns. This leads to variations in temperature, precipitation, and the occurrence of phenomena like the polar night and the midnight sun.seashore and aquatic procedures: With extensive coastlines and access to the North Atlantic Ocean and the Arctic Ocean, seashore and aquatic procedures play a vital role. These procedures include erosion, sedimentation, seashore landforms, and interactions between warm and cold ocean currents.Learn more about Nordic nations at
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The physical processes at work in the Nordic nations include glaciation, tectonic activity, and climate change. Glaciation has shaped the landscape, creating fjords, lakes, and moraines. Tectonic activity has resulted in volcanic activity and geothermal energy sources. Climate change is causing rising temperatures, melting glaciers, and changing weather patterns.
In the Nordic nations, several physical processes contribute to the unique characteristics of the region. One of the significant processes is glaciation, which refers to the formation and movement of glaciers. During the last Ice Age, large ice sheets covered much of the Nordic nations, shaping the landscape and leaving behind distinct features.
Glaciation has resulted in the formation of fjords, which are long, narrow inlets with steep sides, carved by glaciers. These fjords, such as the famous Geirangerfjord in Norway, provide stunning natural beauty and attract tourists from around the world.
Additionally, glaciation has created numerous lakes in the Nordic nations. These lakes, such as Lake Mälaren in Sweden, not only serve as important water sources but also offer recreational opportunities for fishing, boating, and swimming.
Furthermore, moraines, which are deposits of rocks and sediment left behind by glaciers, can be found in the Nordic nations. These moraines, like the Raufarhólshellir lava tube in Iceland, provide valuable geological information and contribute to the understanding of the region's history.
Another physical process at work in the Nordic nations is tectonic activity. The region is located in the North Atlantic Rift, a seismically active area. This tectonic activity has resulted in the formation of volcanic activity, geothermal energy sources, and the presence of geysers in Iceland.
Iceland, in particular, is known for its volcanic landscapes, with active volcanoes such as Eyjafjallajökull and Katla. These volcanoes not only shape the physical environment but also have implications for the local population, as volcanic eruptions can disrupt air travel and affect agriculture.
Moreover, the Nordic nations are experiencing the effects of climate change. Rising temperatures, melting glaciers, and changing weather patterns are some of the consequences of climate change in the region. These changes have implications for the environment, ecosystems, and human activities.
For example, the melting of glaciers in the Nordic nations contributes to rising sea levels, which can lead to coastal erosion and increased vulnerability to storm surges. Additionally, changes in weather patterns can affect agriculture, forestry, and wildlife habitats.
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A tiger has a momentum of 1000 kg-m/s. If the tiger has a mass of 315 kg, what is the speed of the tiger?
Answer: Trust I been here before the answer is 24 speed
Explanation:
You are out camping. As it gets dark, it starts to get cold so you light a fire. What are two energy transformations that explain the light and the heat given off by the fire?
AYUDAAA PORFAVOR
Desarrollar un diagrama de flujo para un programa que solicite la base y la altura y calcule el área de un triangulo
Queremos crear un diagrama general para calcular el área de un triangulo.
Este será algo como:
Definir variablesPedirle al usuario que introduzca los valores deseados (de las variables).Leer los valores deseados y asignarlo a la variable correspondiente.Realizar la operación para calcular el área.Mostrar en pantalla el resultado.Como naturalmente habra algunas variaciones segun el programa que utilicemos, lo voy a escribir de forma bastante general.
Primero definamos nuestras variables:
Por ejemple, en fortran usariamos algo como:
real:: B, H, A
Donde B será la variable que usaremos para la base, H para la altura, y A para el área.
Luego tenemos que escribir en pantalla algo que le diga al usario que debe introducir la base y el area.
Luego el programa debe ser capaz de leer ese input.
con algo de la forma:
B = read*input 1
H = read*input 2
Una vez tenemos definidas las variables, simplemente calculamos el área del triangulo:
A = H*B/2
Finalmente la podemos mostrar en pantalla con algo como:
print(A).
Lo que nos mostraría el valor del área.
Concluyendo, el diagrama en general sería:
Definir variablesPedirle al usuario que introduzca los valores deseados (de las variables).Leer los valores deseados y asignarlo a la variable correspondiente.Realizar la operación para calcular el área.Mostrar en pantalla el resultado.
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An air-filled toroidal solenoid has a mean radius of 15.5 cm and a cross-sectional area of 5.00 cm^2 When the current is 12.5A, the energy stored is 0.395JHow many turns does the winding have?
The toroidal solenoid would be approximately 330 turns.
A toroidal shape refers to a donut-shaped object or structure with a hole in the middle, like a donut or a bagel. In the context of electromagnetic devices, a toroidal solenoid is a type of coil that is wound in a circular shape around a toroidal (donut-shaped) core.
The advantage of this design is that the magnetic field lines are mostly confined to the core, which can improve the efficiency and strength of the magnetic field generated by the coil. Toroidal solenoids are commonly used in applications such as transformers, inductors, and other electronic devices.
The energy stored in an air-filled toroidal solenoid is given by:
U = (1/2) * μ * N² * A * I², where μ is the permeability of free space, N is the number of turns, A is the cross-sectional area, and I is the current.
We can rearrange this equation to solve for N:
N = √(2U / μA I²)
Substituting the given values, we have:
N = √(2 * 0.395 J / (4π x 10⁻⁷ Tm/A² * 5.00 x 10⁻⁴ m² * (12.5 A)²))
N ≈ 330 turns
Therefore, the toroidal solenoid has approximately 330 turns.
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The wave function for a quantum particle is given by ψ(x)=A exp( −∣x∣ / a) where A and a=0.9 are constants and −[infinity]
The wave function for a quantum particle is given by ψ(x)=A exp( −∣x∣ / a) where A and a=0.9 are constants and −[infinity] .
Answer:The given wave function for a quantum particle is ψ(x) = A exp ( −|x| / a). Here, A and a = 0.9 are constants. Given that the length of the box is L = 10 Å, the wave function must vanish outside the box, i.e., at x = ±L / 2.
Thus, ψ (±L / 2) = 0. ψ (±L / 2) = A exp ( ±L / 2a) = 0.
Thus, ±L / 2a = ∞ ⇒ L = 2a∞/ = 2a/0. the box's length is L = 2a/0.
The given wave function is ψ(x) = A exp ( −|x| / a)
The wave function vanishes at x = ±L/2
ψ(±L/2) = 0 ⇒ A exp (±L/2a) = 0 This means that ±L/2a = ∞ ⇒ L = 2a/0 , the length of the box is L = 2a/0.
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