Answer:
(differences)
1- El Niña typically lasts 9-12 months while La Nina typically lasts 1-3 years even tho both occur every 3 to 5 years
2- El Niño refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific.
La Niña refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.
3- Although El Niño and La Niña have an influence on global climate trends, they do not affect all regions similarly, nor do their impacts in a particular location. La Niña causes basically the opposite changes in temperature as El Niño in many areas, especially in the tropics.
Wilam made a chart to summarize the results of experiments with the photoelectric effect. A 1 column table with 3 rows. The column is labeled results with entries 1) frequencies of light that were higher than the frequency threshold of the metal could not eject electrons, 2) as soon as light struck the metal electrons were ejected, 3) the kinetic energy of the ejected electrons depends only on the frequency of the light. Which best describes how to correct Wilam’s error? The first result should state that frequencies of light that were lower than the frequency threshold of the metal could not eject electrons. The second result should state that as soon as light struck the metal, protons were ejected. The second result should state that just before light struck the metal, electrons were ejected. The third result should state that the kinetic energy of the ejected electrons depends only on the frequency of the photons.
Wilam's error is best described as the light with a lower frequency than the threshold of the electron could not eject the electron.
What is Photoelectric Effect?It is a phenomenon in which electrons are ejected from the metal surface when light strick the surface.
The photons of light collide with the electrons in the metal atoms and transfer their energy to electrons. Thus electrons leave the surface of the metal.
The light with a higher frequency has high-energy photons which increase the kinetic energy of the ejected electrons.
The threshold is the minimum energy that a photon must have to eject the electron.
Therefore, Wilam's error is best describes as the light with a lower frequency than the threshold of the electron could not eject the electron.
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Use the computational model of a cannon and cannonball shown to answer the question below.
If the mass of the cannonball increases, and all other initial conditions stay the same, what would happen to the velocity and kinetic energy of the cannonball?
A. The velocity decreases, and the kinetic energy decreases.
B. The velocity decreases, and the kinetic energy increases.
C. The velocity increases, and the kinetic energy decreases.
D. The velocity increases, and the kinetic energy increases.
Answer:
It would be option B.
Explanation:
Option B. is the right answer because as the mass of the canon increases the kinetic energy will increase as well, but the will decrease due to its greater mass.
If the mass of the cannonball increases, and all other initial conditions stay the same, the velocity decreases, and the kinetic energy increases.
The kinetic energy of an object is the energy possessed by the object due to its motion.
\(K.E = \frac{1}{2} mv^2\)
where;
m is the mass of the objectv is the velocity of the objectK.E is the kinetic energy of the objectWhen the mass increases, the kinetic energy will increase.
\(v^2 = \frac{2K.E }{m}\\\\v=\sqrt{\frac{2K.E }{m}}\)
when the mass increases, the velocity of the cannonball will decrease.
Thus, we can conclude that if the mass of the cannonball increases, and all other initial conditions stay the same, the velocity decreases, and the kinetic energy increases.
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Theo mixes cake batter and places it in the oven at 350°F for 45 minutes. Explain what type of reaction baking a cake represents in terms of energy.
Answer:
Baking a cake requires heat to be applied to the batter in order for it to cook and chemically change into cake. The energy or heat applied is absorbed by the ingredients, so this represents an endothermic reaction.
Explanation:
that's the sample answer, hope it helps
The batter needs to be heated in order to cook and chemically transform into a cake when it is baked. An endothermic reaction is taking place because the energy or heat applied is being absorbed by the constituents.
What is energy?The quantitative characteristic that is transferred to a body or a physical system in physics is referred to as energy. It manifests itself as heat and light, as well as the act of doing work. Energy is a resource that is conserved; it can only be changed from one form to another and cannot be created or destroyed, according to the law of conservation of energy. The SI unit of energy measurement is the joule (J).
According to the question, there are various types of reactions two of which are endothermic reactions and exothermic reactions.
In an endothermic lot of energy is absorbed and in opposition to the exothermic reaction lot of energy is released.
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The coetticient of friction between a block and the surface it slides across is 0.360. The block has a mass of 150 kg
What force is required to accelerate the block 0.5 m/a^2.
The friction between the b;ock and surface is given by mass and accelerartion.
Force = mass * acceleration
a) Determine the mass of a student in kg who weighs 135 lbs. using the conversion factor 1 kg = 2.2 lbs. Round your answer to the nearest tenth. b) Convert 5.3 milligrams into grams.
Answer:
Below
Explanation:
135 lbs * 1 kg/2.2 lb = ~ 61.4 kg
there are 1000 mg in each gram
5.3 mg * 1 gm / 1000 mg = .0053 g
If the force to stretch a spring is given as k = (100N/m), then what is the potential energy of the spring if it is stretched 1 meters from rest?
Answer:
50 Joules
Explanation:
EXPLAIN CONSERVATION OF MOMEMTUM WITH THE HELP OF COLLISION OF TWO OBJECT.
i hate this question.
Conservation of momentum - is when the total momentum before and after collision is equal.
Here is the formula darling,
p = p
mv = mv
See the pic for example. HmpH
A friend says to you, “I’m the fastest runner in my class because I can run four miles without stopping.” Explain to your friend why her statement doesn’t make sense.
Answer:
Just because they can run doesn't mean they are fast
Explanation:
you could take a day to run across a football field, or you can take 5 minutes, which is faster?
You're friend in this equation has little to no braincells so they would have trouble seeing that running the length of a football field in five minutes is faster than a day, however, if they also said they did it in less than five minutes then it would mean your friend is fast
The water displacement method was used to determine the density of silly putty. The initial water level in graduated cylinder was 25 ml and the final water level after placing silly putty into graduated cylinder was 29 ml. The mass of the silly putty was 8 grams. Calculate the density of the silly putty.
Answer:
The density of putty 2 g/cm³
Explanation:
Given:
V₀ = 25 ml = 25 cm³
V = 29 ml = 29 cm³
m = 8 g
______________
ρ - ?
The density of putty:
ρ = m / (V - V₀)
ρ = 8 / (29 - 25) = 8 / 4 = 2 g/cm³
how do two positive electric charges react to each other?
Answer:
The two positive electric charges repel each other. If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge. As a result opposite charges attract each other: The electric field and resulting forces produced by two electrical charges of opposite polarity.
Explanation:
Hope this helps!
-PBvibes
<3
Answer:
they repel each other
Explanation:
If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge. As a result opposite charges attract each other: The electric field and resulting forces produced by two electrical charges of opposite polarity.
a reaction occurs in which carbon combines with sulfur to form carbon disulfide is this a chemical reaction or a nuclear reaction and how do you know
Answer:
a chemical reaction where electrons mix.
Explanation:
A nuclear reaction is when atomic nuclei combine, forming a new chemical element
A chemical reaction occurs when electrons from the last layer of atoms mix, forming molecules that have the same chemical elements as the reactants.
According to these definitions
C + 2 S → CS2
in a chemical reaction where electrons mix.
Answer:
This is a chemical reaction, because only the electrons were rearranged.
A sports car has a mass of 1500 kg and
accelerates at 5.0 m/s2. What is the magnitude of
the force acting on the sports car?
Answer:
10
Explanation:
Sana tama po yan hahaha
Answer:
\(\boxed {\boxed {\sf 7500 \ Newtons }}\)
Explanation:
Force is the product of mass and acceleration.
\(F=ma\)
The mass of the sports car is 1500 kilograms and the acceleration is 5.0 meters per square second.
\(m=1500 \ kg \\a= 5 \ m/s^2\)
Substitute the values into the formula.
\(F= 1500 \ kg * 5 \ m/s^2\)
Multiply.
\(F= 7500 \ kg*m/s^2\)
1 kilogram meter per square second is equal to 1 Newton. Our answer is equal to 7500 Newtons.\(F= 7500 \ N\)
The force acting on the sports car is 7500 Newtons.
Systemic circulation requires help from which of the following bones, lungs, arteries and veins, or muscles
Answer:
Artery and viens
Explanation:
If the distance between two point charges is tripled, the mutual force between them will be changed by what factor?
If the distance between two point charges is tripled, the mutual force attraction between them will be reduced by a factor of 1 by 9th.
The square of the separation distance is inversely correlated with the electrostatic force which is the mutual force of attraction. F is therefore nine times smaller, or one-ninth the original value if the distance between the charges is made three times larger.
A point charge is defined as a charge which doesn't have any area or volume and hence it appears as a point.
The mutual force of attraction which is also referred to as the electrostatic force of attraction is defined as the force that exists between two charged particles in a 3D space.
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What is observed that connects radio emissions in the galactic nucleus with the emissions in the halo or radio lobes?
Answer:
What is observed that connects radio emissions in the galactic nucleus with the emissions in the halo or radio lobes? There is a jet of matter coming out of the nucleus, which often points toward the lobes.
i. How does The Bhutan Forest Act of 1969, affect the lives of shifting cultivators?
The Bhutan Forest Act of 1969, affect the lives of shifting cultivators because the act placed the status of Tsheri land on the same footing with wetland and rain-fed land.
What is shifting cultivators?A field that had been developed whenever was left neglected for quite a long time, Shifting cultivators were tracked down in the sloping and forested lots of North-east and Central India. The existences of these ancestral individuals relied upon free development inside backwoods and on having the option to involve the land and woods for developing their harvests.
The Forest Act of 1969 has restricted new clearances for moving development however has not deterred the act of it where such development doesn't jeopardize the wellbeing of the roadway and public property. The Land Act of 1979 has put the situation with
Tsheri land on a similar footing with wetland and rain fed land.
Thus, Bhutan Forest Act of 1969, affect the lives of shifting cultivators.
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Which source should you NOT consult to validate an advertisement's claim?
A.
peer-reviewed scientific journals
B.
websites of government agencies
C.
your doctor
D.
website of the product manufacturer
Answer:
I believe D
Explanation:
Of course the manufacturer would most likely be biased to the product the have created, but the other sources would have no reason to. Hope this helps!
Scientists use radioactive decay to measure
Answer:
"Scientist use radioactive decay to measure the age of a rock or fossil."
Explanation:
"To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events."
Suppose you inflate your car tires to 38 psi on a 25 ∘C day.
Later, the temperature drops to 0∘C. What is the pressure in your tires now?
The pressure in your tires would decrease due to the decrease in temperature. The relationship between temperature and pressure is known as the ideal gas law.
which states that pressure and temperature are directly proportional to each other. As the temperature drops, so does the pressure in the tires. The ideal gas law formula is P1/T1 = P2/T2, where P1 is the initial pressure, T1 is the initial temperature, P2 is the final pressure, and T2 is the final temperature.
Using this formula and assuming that the volume of the tires remains constant, we can calculate the final pressure in the tires. P1 is 38 psi, T1 is 25°C + 273.15 (to convert to Kelvin) = 298.15 K, T2 is 0°C + 273.15 = 273.15 K. Plugging in the values, we get P2 = (38 psi * 273.15 K) / 298.15 K = 34.9 psi. Therefore, the pressure in your tires would be approximately 34.9 psi when the temperature drops to 0°C.
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What is parallel connection
In a circuit with two identical components connected in parallel, the current which flows through its different branches will be __________. Which of the following completes the sentence?
In a circuit with two identical components connected in parallel, the current which flows through its different branches will be different.
What is parallel circuit?A parallel circuit can be defined as a type of circuit that comprises branches so that the current divides and only part of it flows through any branch.
In this type of circuit (parallel circuit) the voltage, or potential difference, across each branch of a parallel circuit is the same, but the currents may vary.
The main characteristics of parallel circuits include the follow;
current in each circuit component is differentvoltage in each circuit component is the samethe effective resistance is the reciprocal sum of individual resistanceThus, a parallel circuit will have same voltage across the circuit components and different current flowing in each components.
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What is the results t of two forces 7 Newton and 10 Newton inclined at an angle 30 degree to each other
Answer:
16.44 N
Explanation:
From the diagram attached,
we make use of cosine rule to calculate the resultant force
R² = P²+Q²-2PQcosα............................. Equation 1
Where R = resultant force
Given: P = 7 Newton, Q = 10 Newton, α = (180-30) = 150°
Substitute these values into equation 1
R² = 7²+10²-(2×7×10×cos150°)
R² = 49+100-140cos150°
R² = 149-140cos150°
R² = 149-140(-0.8660)
R² = 149+121.24
R² = 270.24
R = √(270.24)
R = 16.44 N
1.Which of the following describes kinetic energy?
a. It is the energy of objects at rest. c. It is the energy of unmoving objects.
b. It is the energy of moving objects. d. It is the energy of objects in motion and in position.
2. What kind of energy does a sling shot that is pulled back all the way has?
a. kinetic energy c. elastic potential energy
b. chemical energy d. gravitational potential energy
3. Which of the following affects the amount of potential energy of an object?
a. mass and height b. mass and velocity c. height and velocity d. mass only
4. How will you increase the potential energy of a diver in the Olympics?
a. work out and lose weight c. go to a lower diving board
b. always jump d. go to a higher diving board
5. Which is the best example that something has kinetic energy?
a. water in the glass c. crawling ants on the wall
b. an apple placed at the rooftop d. car parked in front of the house
6. Which quantity does not affect the amount of kinetic energy?
a. mass b. velocity c. location d. none of these
7. If two objects with different mass are placed on the same table, which one contains
more energy?
a. The object with less mass c. Both objects have same amount of energy
b. The object with greater mass d. None of the two objects
8. A 60 kg man walks from the ground to the top of a 80 m tall building. How much
increase in gravitational potential energy is there? (Take g = 10N/kg)
a. 600 N b. 4800 J c. 8000 J d. 48000 J
9. The baseball pitcher throws a 0.145 kg baseball at a velocity of 30.0 m/s. What will be
the kinetic energy of the ball?
a. 62.55 J b. 65.25 J c. 65.55 J d. 62.25 J
10. If you are going to place a stone on a hill, at which point of the hill will it contain the
greatest amount of potential energy?
a. halfway down the hill c. top of the hill
b. on the hillside d. bottom of the hil
Explanation:
1.a
2.
a
3.
a
4.
a
5.
d
6.
a
7.
a
8.
b
9.
b
10.
c
I did all I can please mark me as brainllestIndica qué es una propiedad específica de la materia. Además explica por qué son útiles las propiedades específicas de la materia frente a las generales.
Answer:
Check Explanation
Comprobar explicación
Explanation:
English Translation
Indicate what a specific property of matter is. Also explain why the specific properties of matter are useful compared to the general ones.
Solution
The specific properties of matter are properties that describes the intensive properties of the system. They are properties that do not depend on or change with the extent or size of the system. They are usually obtained by dividing the generalised properties or extensive properties by the extent or size of matter to make them independent of size/extent/Mass.
Examples of specific properties include specific heat capacity, specific volume etc. They usually have units of general units/Mass units.
The specific properties of matter are more important than the general ones because
- They help in general comparisons of the properties of different materials. They are used to rank, classify and compare properties of different materials.
- They are used in reference table/data to easily record easily accessible properties of matter. It helps to record standards that are general and independent of sizes/extents/Mass, thereby keeping the reference table/data/chart precise and concise.
- They provide us with values that are easy to memorize and remember, unlike trying to cram the different properties of different masses/sizes of matter.
In Spanish/En español
Las propiedades específicas de la materia son propiedades que describen las propiedades intensivas del sistema. Son propiedades que no dependen ni cambian con la extensión o el tamaño del sistema. Por lo general, se obtienen dividiendo las propiedades generalizadas o las propiedades extensivas por la extensión o el tamaño de la materia para hacerlas independientes del tamaño / extensión / masa.
Los ejemplos de propiedades específicas incluyen capacidad calorífica específica, volumen específico, etc. Usualmente tienen unidades de unidades generales / unidades de masa.
Las propiedades específicas de la materia son más importantes que las generales porque
- Ayudan en las comparaciones generales de las propiedades de diferentes materiales. Se utilizan para clasificar, clasificar y comparar propiedades de diferentes materiales.
- Se utilizan en la tabla / datos de referencia para registrar fácilmente propiedades de materia fácilmente accesibles. Ayuda a registrar estándares que son generales e independientes de tamaños / extensiones / masa, manteniendo así la tabla / datos / tabla de referencia precisa y concisa.
- Nos proporcionan valores que son fáciles de memorizar y recordar, a diferencia de tratar de agrupar las diferentes propiedades de diferentes masas / tamaños de materia.
Hope this Helps!!!
¡¡¡Espero que esto ayude!!!
2.List two changes an unbalanced force can cause.
Answer:
By applying an unbalanced force, you can change the motion of an object. Unbalanced forces can make an object at rest start moving, make a moving object stop, or change the direction and speed of the object.
Explanation:
what is epicentre answer me
Answer:
the point on the earth’s surface where the effects of a sudden movement (earthquake) are felt most strongly
पृथ्वी का वह भाग जहाँ भूकंप का झटका सबसे अधिक महसूस किया जाता है; अधिकेंद्र
Explanation:
Marie kon hai bro
You're the CEO of a courier company, and you decide to select an electric car for your fleet of vehicles. A particular car has a mass of 1500 kg and is powered by 26 12 V batteries connected in series, for a total of 312 V. Batteries are rated at 100 ampere-hours, which means they can deliver 00 A for I h, I A for 100 h, or any combination that equals 100A h. When the batteries are connected in series, the charge output of all the batteries is the same as one battery-in this case 100A . h. The motor is 85% efficient in converting electrical energy to mechanical energy in the drive wheels. A test report says the car can climb a 13 slope at a speed of 45 km/h Part A Assuming the batteries are fully charged, how long can the car maintain this speed at that angle? Express your answer using two significant figures.
The car can maintain a speed of 45 km/h while climbing a 13° slope for approximately 2.5 hours with a fully charged battery.
P = mg sin(θ) v + 1/η m v²/2
P = (1500 kg) (9.81 m/s²) sin(0.227 rad) (12.5 m/s) + 1/0.85 (1500 kg) (12.5 m/s)²/2
≈ 26.9 kW
The current required to supply 26.9 kW at 26 V is:
I = P/V = 26.9 kW / 26 V ≈ 1038 A
Since each battery has a capacity of 100 Ah, the total capacity of the battery pack is:
C = 100 Ah × 26 batteries = 2600 Ah
The time that the car can maintain this power is:
t = C / I ≈ 2.5 hours
Speed is a fundamental concept in physics that refers to the rate at which an object moves or changes its position over a period of time. It is defined as the distance covered by an object divided by the time taken to cover that distance. The standard unit of measurement for speed is meters per second (m/s) or kilometers per hour (km/h).
Speed is a scalar quantity, meaning it has only magnitude and no direction. It can be calculated using a simple formula: Speed = Distance ÷ Time. The greater the distance an object covers in a given amount of time, the higher its speed. Conversely, the longer it takes an object to cover a given distance, the slower its speed.
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do you expect an echo to return to you more quickly on a hot day or a cold day?
Answer:
more quickly on a hot day
Explanation:
Brandon is flying to the Western United States. His plane manages to cover 700 miles in 2 hours.
thats cool for brandon
Answer:
thats 350 miles an hour, 5.83 miles a minute, .0972 miles a second
Explanation:
SAP n 4 A truck leaves Tripoli at 07:25:00 reaches Beirut at 10 o'clock, rests for 35mn, then leaves towards Zahle. The duration of the journey Beirut - Zahle is 2h 45mn. 5 a What is the starting time? b What is the total duration of the motion in minutes and in seconds? C At what time does he reach Zahle?
answer:
A 7:25
B 355min 21300sec
C 1:20
Explanation:
A he started the tripoli beirut at 7:25 thus it is the begining journey
B tripoli - beirut takes 2hours and 35 min and he rest 35min and beirut-zahle takes 2hours and 45 min all is 4 hours and 80min 4×60=240+45+35+35=355min
355×60=21300 sec