The radius of revolution of the object is 88 cm.
What is speed?Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.
Speed of the object = 8.4 m/s
Total time taken for completing five revolution= 3.3 seconds
Let the radius of revaluation = r
So, five revolution = 5 × perimeter of the circle
= 5 × 2πr
Then:
5 × 2πr = 8.4 × 3.3
r = 0.88 meter = 88 cm
Hence, the radius of revolution is 88 cm.
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4. Two equal charges of 5.0 C push each other apart with a force of 4.3 N. How far apart are the
two charges? SHOW ALL WORK
The two equally charged particles are about 651 m apart from each other.
What is Coulomb's Law ?The Coulomb's inverse-square law, sometimes known as Coulomb's law, is an experimental physical principle that measures the force exerted between two electrically charged particles that are stationary. Common names for the electric force between two charged objects at rest include electrostatic force and Coulomb force.
The inverse square dependency of electric force is represented by Coulomb's law. Additionally, the law is accurately used in the proofs of Magnus' law for general instances. Coulomb's law's vector form is crucial since it describes the direction of the electric fields created by charges.
Briefing:
Coulomb's law, force of attraction/repulsion
F = kQ₁Q₂/r²
Q₁ and Q₂ are the charges in coulombs
r is separation in meters
k = 8.99e9 Nm²/C²
Here, Q1 = Q2 = Q
So,
F = kQ² / r²
r = Q/√(F/k)
⇒ r = 5/√(4.3/8.99e9)
⇒ r = 650.79 m
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A 15 g bullet is fired horizontally into a 3.000 kg block of wood suspended by a long cord. The bullet comes to a rest in the block. Determine the velocity of the bullet if the impact causes the block to swing 10 cm above its initial level
The velocity of the bullet if the impact causes the block to swing 10cm above its initial level is 281m/s.
What is law of conservation of momentum?The law of conservation of momentum determines that the momentum of a system remains conserved after a collision. The initial momentum of a system of two bodies is equal to the final momentum of the system.
After collision, initial K.E. (Kinetic energy) of combined mass = 3 × 10 × 0.1 = 3J
1/2 × 3 × v² = 3
v = √2m/s
Conservation of momentum,
15 × v = 3000 × √2
v = 281m/s
Therefore, the velocity of the bullet is 281m/s.
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An engine develops a power of 750watts while moving a car at constant velocity 3m/s therefore the work exerted on the car by the engine is. And please I need the solution
The work exerted on the car by the engine is 250 Joules.
What is Work?
Work is a physical quantity that is defined as the force applied to an object over a distance. It is a scalar quantity and is measured in units of joules (J) in the International System of Units (SI). The formula for work is W = F x d, where F is the force applied and d is the distance over which the force is applied.
The work exerted on the car by the engine can be calculated using the formula:
Work = Power x Time
Since the car is moving at a constant velocity, we can calculate the time it takes for the engine to exert the given power by using the formula:
Velocity = Work / Time
So, we can find time by using:
Time = Work / Velocity
Substituting the given values, we have:
Time = (750 watts) / (3m/s)
Therefore, the work exerted on the car by the engine is:
Work = Power x Time
Work = 750 watts x (750 watts / 3m/s)
Work = 750 * 250 Joules
So, the work exerted on the car by the engine is 250 Joules.
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help me................ its two parts
Your answer would be 21!
Energy Conversion Stations
Name: ________________________________________ Class: ____________
Station #1
Directions: Fill the beaker approximately 50 mL with vinegar. Place about 1 tablespoon of baking soda into the beaker with the vinegar.
1. What type of energy occurs before the reaction takes place?
2. What types of energy is produced as the reaction is occurring?
Station #2
Directions: Blow up some of the balloons; let them go and see what happens.
1. What type of energy is needed to stretch a balloon? Think about what you have to physically do in order to stretch a balloon.
2. Blow up one of the balloons. What kind of energy does the inflated balloon have?
3. When you release the filled balloon, what types of energy are produced from the stored energy in the balloon?
Station #3
Directions: Rub your hands together, gradually picking up the speed for 30 seconds.
1. What type of energy did you use to rub your hands together?
2. What type of energy was given off when you rubbed your hands?
3. If you rub your hands together faster, how does the amount of energy change?
Station #4
Directions: Hold the meter stick vertically with the zero end on the counter. Drop (do not throw) a ball from the 50 centimeter mark and record the height to which the ball bounces back.
1. The ball bounced back to the _______ cm mark. Why can’t the ball rise back to the 50 cm mark?
2. This is because some of the ________________ energy converts to _____________ & ______________ energy.
Station #5
Directions: Look at the picture below of a roller coaster. List which position represents the greatest amount of potential energy and which represents the greatest amount of kinetic energy. Explain your answers.
Point ____ has the greatest amount of potential energy because ________________________. Point ____has the greatest amount of kinetic energy because __________________________.
Answer: Hey man i hope this answer is right
Station #1:
Chemical energy occurs before the reaction takes place.
Thermal and chemical energy is produced as the reaction is occurring.
Station #2:
The type of energy needed to stretch a balloon is mechanical energy.
The inflated balloon has potential energy.
When you release the filled balloon, kinetic energy is produced from the stored energy in the balloon.
Station #3:
The type of energy used to rub your hands together is mechanical energy.
The type of energy given off when you rub your hands is heat energy.
If you rub your hands together faster, the amount of energy increases.
Station #4:
The ball bounced back to the 40 cm mark. Why can’t the ball rise back to the 50 cm mark?
This is because some of the gravitational potential energy converts to thermal and kinetic energy.
Station #5:
Point A has the greatest amount of potential energy because it is highest point on the roller coaster and gravity potential energy is directly proportional to height. Point B has the greatest amount of kinetic energy because it is at the lowest point of the roller coaster and gravity potential energy gets converted into kinetic energy as it reaches the lowest point.
Explanation:
Is the declining acreage of land used for farming in the United States a major problem?
a. No, food is essential for life and therefore there is no higher valued use for land than providing foodstuff, eventually government regulators will step in an reverse the
current trend.
b. Yes, unless public pressure leads to a reversal of this trend, America can expect food shortages in the future.
c. No, it is primarily a reflection of the increased productivity in agriculture and shift of the land to higher valued uses.
Od. Yes, unless government regulation slows the commercial development of land, market forces will lead to the virtual depletion of land for agricultural use.
Answer:
C. No, it is primarily a reflection of the increased productivity in agriculture and shift of the land to higher valued uses.
Explanation:
Declining acreage of land used for farming in the United States is not necessarily a major problem. The decline in land used for farming can be a reflection of increased productivity in agriculture, which allows farmers to produce more food on less land. Additionally, the shift of land to higher valued uses such as commercial development, housing, and recreation can also contribute to the decline in land used for farming. While it's important to ensure that there is enough land for food production, it's also important to consider the other economic and social benefits of different uses for land.
a bus traveling with a speed of 54 km/h has a kinetic energy of 2x10^6 j. what is the mass of the bus
a. 1.78 x 10^5 kg
b. 2.88 x 10^7 kg
c. 1.78 x 10^4 kg
d. 2.88 x 10^5 kg
The mass of the bus is 1.78 × 10⁵ kg. Hence, option (a) is correct.
What is kinetic energy?Kinetic energy is a type of energy that a moving object or particle possesses. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.
Mathematically,
Kinetic energy = 1/2 × mass × speed²
2 × 10⁶ Joule = 1/2 × mass × (54 km/h)²
2 × 10⁶ Joule = 1/2 × mass × (54 × 5/18 m/s)²
Mass = 2 × 2 × 10⁶ ÷ (54 × 5/18 m/s)² kg
= 17777.78 kg.
= 1.78 × 10⁵ kg
Hence, mass of the bus is 1.78 × 10⁵ kg.
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How do you benefit from the life processes performed by one of the organelles in plant cell ?
The photosynthetic pigment, chlorophyll is present in the chloroplast of the cell. It helps to absorb the solar energy. It converts the light energy into chemical energy and helps in the process of photosynthesis.
What is meant by photosynthetic?
The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.Green plants and certain other organisms convert light energy into chemical energy through a process called photosynthesis.Light energy is gathered and utilised during photosynthesis in green plants to change water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.Chloroplasts, which are found in the mesophyll of the leaves, are where photosynthesis occurs.The chlorophyll in the thylakoids, which are located inside the chloroplast, absorbs the various colors of light to produce energy.Photosynthesis is the method through which land plants use carbon dioxide and sunshine to create their own nourishment.To learn more about photosynthetic refer to
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100 points and brainly if correct
2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(g)
This is a balanced equation for the combustion of acetylene (C2H2). How many grams of acetylene(C2H2 ) are required to produce 1.0 moles of CO2?
5.0 grams
0.20 grams
13.0 grams
10.0 grams
pls give an answer that is given, these are the only answers
Answer: 13.0 grams
Explanation: im assuming
Mikasa and Eren plan to meet at a cottage for a weekend retreat. Eren must drive a distance of 1.5 ´ 102 km at an average speed of 85 km/h. Mikasa has only 90.0 km to travel and averages a speed of 1.0 ´ 102 km/h. If they both depart at the same time, how much earlier does one arrive than the other. (Give your answer in minutes.) (2 pts)
The overall displacement of the object in a given direction over the course of a unit of time is its velocity.
What is Average velocity?
A vector quantity is velocity. This implies that it has a predetermined course. The rate at which an object moves over time is referred to as its velocity.
This motion has zero velocity because the definition of velocity is the rate of displacement. A person must maximize his or her displacement from the starting position if they want to maximize their velocity.
Since velocity is a vector quantity, we must consider direction when evaluating it. The primary distinction between speed and velocity is that speed is a scalar quantity that depends on distance whereas velocity does not.
Therefore, The overall displacement of the object in a given direction over the course of a unit of time is its velocity.
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Please help meee!!!!!
Except when acted upon by an imbalanced force, an object at rest remains at rest and an object in motion continues to move in a straight path at a constant pace.
What is Newton's law of motion?According to the first law, a force must be applied to an object before it may affect its motion. According to the second law, an object experiences a force equal to its mass times its acceleration. According to the third law, when two things interact, they exert forces on one another that are both equal in strength and directed in the opposite direction.
According to the first law, an object will continue moving in the same direction unless another force acts on it. According to the second law, an object's force is determined by multiplying its mass by its acceleration. There is an equal and opposite reaction to every action, according to the third law.
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a cart rolling down and incline speed up from 2m/s to 22m/s with an acceleration of 4.0 m/s squared. How long did it take?
Answer: It took a time a time of 5.0 seconds✅.
Explanation:
A cart rolling down and incline speed up from 2m/s to 22m/s with an acceleration of 4.0 m/s squared. How long did it take?
Data:
Vf = Final speed = 22 m/s
Vo = Initial speed = 2 m/s
a = acceleration = 4.0 m/s²
t = time = ?
We apply the formula, substitute data and solve:
t = Vf - Vo/t t = (22 m/s - 2 m/s)/4.0 m/s² t = 5.0 sIt took a time a time of 5.0 seconds.
1. Which distance is the greatest?
O 7000 meters
O 99.99 meters
O 4.5 x 10³ meters
O 9.0 x 10² meters
Answer:
7000 meters
Explanation:
obviously 99.99 is less than 7000
10 cubed is 10 × 10 × 10, 1000, × 4.5 is 4500, which is less than 7000
10 squared is 100, which × 9 is only 900, which is also less than 7000
have a good day
Is Fielding games helps develop locomotor skills?
Explanation:
yes, yes it helps in improving locomotive skills
The mechanical energy is converted into electrical energy stored in the coil .this relates to A)ohms law. B) Coulomb’s law. C) Lenz law. D) newtons law of motion
A tool that transforms mechanical energy into electrical energy is an electric generator.
What is converts mechanical energy into electrical energy?A tool used to transform mechanical energy into electrical energy is an electric generator.
Mechanical energy is transformed into electrical energy via a generator. The mechanical energy of water in a storage dam is transformed into electrical energy by a hydroelectric power plant.
The mechanical energy of the wind is converted into electrical energy by a wind turbine.
A motor is a device that turns electrical energy into mechanical energy, while a generator uses electromagnetic induction to convert mechanical energy into electrical energy.
Electrical energy is transformed into mechanical energy by an electric motor. Mechanical energy is transformed into electrical energy via a generator.
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A certain satellite orbiting the Earth has an orbital radius of 7.6 E^7 m. Calculate the orbital speed of the satellite. (^M earth = 6.0 E^24 kg)
With the use of formula, the orbital speed of the satellite is 2294.7 m/s
What is Orbital Speed ?Orbital speed can as well be regarded as orbital velocity. The necessary centripetal force is provided by the earth's gravitational pull.
Given that a certain satellite orbiting the Earth has an orbital radius of 7.6 E^7 m. Calculate the orbital speed of the satellite.
M = 6.0 E^24 kgg = 9.8 m/s^2r = 7.6 E7 mIf the centripetal force is provided by the earth's gravitational force, then,
(mv²)/r = GMm/r²
v²/r = GM/r²
v² = GM/r
v = √GM/r
Where v = orbital speed
Substitute all the parameters
v = √( 6.67 × 10^-11 × 6.0 × 10^24)/(7.6 × 10^7)
v = √5265789.5
v = 2294.7 m/s
Therefore, the orbital speed of a satellite orbiting the earth is 2294.7 m/s
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Name four factors that will influence the resistance of a conductor
Four factors that will influence the resistance of a conductor are the material used, the length of the conductor, the cross-sectional area of the conductor, and the temperature of the conductor. The material used will affect the number of free electrons in the conductor, which will influence the electrical resistance. The length of the conductor affects the number of collisions the electrons must overcome, which will also affect the electrical resistance. The cross-sectional area of the conductor affects the number of electrons that can move through the conductor at once, which can also influence the resistance. Finally, the temperature of the conductor affects the kinetic energy of the electrons, which can affect the electrical resistance.
Why is drinking water good for the brain?
Answer:
water is good fort he brain becuase it increases blood circulation and provides more oxygen to the brain
Answer:
It helps regulate blood and and oxygen.
Explanation:
helps also with cleaning and purifing the blood stream
An aerobatic airplane pilot experiences
weightlessness as she passes over the top of
a loop-the-loop maneuver.
The acceleration of gravity is 9.8 m/s^2.
If her speed is 160 m/s at this time, find the
radius of the loop.
Answer in units of km.
For weightless object, the gravity is equal to the centripetal acceleration. The radius of the loop is
What is acceleration due to gravity?The net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g.
The unit g stands for gravitational acceleration. At sea level, the standard value of g on earth's surface is 9.8 m/s2.
Centripetal Acceleration = [tex]V^2/r[/tex]
V = 160 m/s
r = ?
As we know that for weightless object,
Gravity = centripetal acceleration
Means a = g
So,
a = 9.8 [tex]m/s^2[/tex]
[tex]r=\frac{160^2}{9.8}[/tex]
r = 25600/9.8
r = 2612.24m = 2.61 km.
Thus, the radius of the loop is 2.61 km.
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Your new weed-cutter requires, as fuel, a gas-to-oil mixture of 20-to-1 (20 parts of gas mixed with one part of oil). You have 1/2 of a gallon of gas. How much oil, in gallons, should you add to make it all into fuel for the weed-cutter?
This ratio specifies how much oil should be added to how much new, standard unleaded gasoline (having no more than 10% ethanol). There is a 40:1 ratio for all Remington 2-cycle products.
How much oil should I put in a gallon of gas?This ratio specifies how much oil should be added to how much new, standard unleaded gasoline (having no more than 10% ethanol). There is a 40:1 ratio for all Remington 2-cycle products.Accordingly, for every gallon of gasoline you need add 3.2 oz of oil.Every two-cycle gas trimmer under the Weed Eater brand uses a 40:1 gas to oil ratio.This is equivalent to 3.2 ounces of oil to a gallon of standard fuel.With no more than 10% alcohol, the gas must be 87 octane.Once all of this is considered, especially the possibility of a lengthy oil change, many automobile owners find it wise to add oil whenever the dipstick indicates a low level.Don't wait until it has completely descended.To lean more about gallon of gas refer
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Consider the physical quantities m, r, v and a with dimensions [m] = M, [r] = L, [v] = LT-1. Assuming that each of the following equations is dimensionally consistent, find the magnitude dimension of the left-hand side of the equations.
(a) K = 0.5m.v²
(b) L = m.v.r.
The equation that can be shown to be dimensionally correct is K = 0.5m.v².
What is dimensions?
When we talk about the dimensions then our minds would have to go the relationship that does exist between the quantities. On the ways that dimensions is very important is that we can use the dimensions so as to show that an equation is correct.
We know that here we have the dimensions as LT-1. The left hand side of the and the correct equation would have to be K = 0.5m.v² as we can see in the question here.
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A 0.060 kg tennis ball moving with the speed of 2.50 m/s, collides head-on with a 0.090 kg ball initially moving away from it at a speed of 1.15 m/s. Assuming a perfectly inelastic collision, what are the speed and direction of each ball after the collision?
a
1.50 m/s same direction of the tennis ball's initial motion
b
1.69 m/s same direction of the tennis ball's initial motion
c
2.25 m/s opposite direction of the tennis ball's initial motion
d
1.85 m/s opposite direction of the tennis ball's initial motion
The speed of each ball after the collision is 1.69 m/s and direction is same of the tennis ball's initial motion.
What is principle of momentum conservation?According to the principle of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
According to principle of momentum conservation:
the velocity of the two ball mass after the perfectly inelastic collision is
= (0.060 kg × 2.50 m/s + 0.090 kg × 1.15 m/s) ÷ ( 0.060 kg + 0.090 kg)
= 1.69 m/s
Hence, the speed of each ball is 1.69 m/s.
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2 What distance will a sprinter travel in 4.0 s if his or her
acceleration is 2.5 m/s²? Assume the sprinter starts
from rest.
A 13 m
B 20 m
C 80 m
D 90 m
The distance travelled by sprinter in 4 sec is 20 m
It is given that
acceleration of sprinter = 2.5 m/s²
time taken by sprinter = 4.0 s
initial speed of sprinter = 0 m/s
We have to find distance travelled by sprinter
We will use the following equation of motion
S = ut + 1/2at^2
S = 1/2at^2
S = 1/2 x 2.5 x (4)^2
S = 1/2 x 2.5 x 16
S = 20 m
Hence, distance travelled by sprinter in 4 sec is 20 m
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—l l—
What does the ladder diagram symbol shown here represent?
A. Contact, normally open
B. Fuse
C. Overload contact
O D. Flow switch, normally open
Software for programmable logic controllers is created using the graphical programming language ladder diagram (PLCs).
What do you mean by ladder diagram?These unique Symbols are frequently utilised in industrial control logic systems. Ladder diagrams get their name from the way they seem like ladders, with two vertical lines for power and as many horizontal lines for control units.
The graphical programming language Ladder Diagram is used to create software for programmable logic controllers (PLCs). It's one of the languages allowed for usage with PLCs according to the IEC 61131 standard. Circuit diagrams that simulate relay logic devices are known as programmes in ladder diagram notation.
Usually Open (NO) If Closed, contact or examine (XIC)Typically Closed (NC) If Open, Contact or Inspect (XIO)Result Energize (OTE)OTL (Output Latch) and OTL (Output Unlatch) (OTU)To learn more about ladder diagram refer to:
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what is the equation of Gravitational Potential Energy?
Answer:
U = mgh
U = gravitational energy
m = mass
g = gravitational field
h = height
Explanation:
A 950 kg police boat slows down uniformly from 65 km/h [E] to 15 km/h [E] as it enters a harbour. If the boat slows down over a 45 m distance,
what is the net force on the boat?
The net force on the boat is 16,359 N.
What is the acceleration of the boat?
The acceleration of the boat is calculated from the change velocity of the boat of the boat to the change in time of motion of the boat.
v² = u² - 2as
where;
v is the final velocity of the boat = 65 km/h = 18.1 m/su is the initial velocity of the boat = 15 km/h = 4.2 m/sa is the acceleration = ?s is the distance travelled = 9 ma = ( u² - v² ) / 2s
a = ( 18.1² - 4.2² ) / ( 2 x 9 )
a = 17.22 m/s²
The net force on the boat is calculated as follows;
F = ma
F = 950 kg x 17.22 m/s²
F = 16,359 N
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Two particles with charges Q=16 microC and -Q=-16 microC are fixed at the vertices of an equilateral triangle with sides of length a = 8 micrometers. The work required to move a particle with a charge q=19 microC from the other vertex to the centre of the line joining the fixed charges is ...J
The work required to move the particle with a charge of q = 19 microC from the other vertex to the center of the line joining the fixed charges is approximately -2.03 * 10^-14 J.
What is the work required?The work required to move a charge from one point to another in an electric field is given by the equation W = qV, where q is the charge and V is the potential difference.
In this case, the potential at the center of the line joining the two fixed charges can be calculated using Coulomb's law. The potential difference between the center and the third vertex can then be calculated, giving us the work required to move the particle with a charge q = 19 microC.
W = qV = 19 * 10^-6 C * V
Where V is the potential difference, which can be calculated as follows:
V = (1/(4 * pi * epsilon_0)) * ((Q / a) - (q / a))
Where epsilon_0 is the vacuum permittivity and a is the length of the sides of the equilateral triangle.
Substituting the values, we get:
W = 19 * 10^-6 C * (1 / (4 * pi * 8.854 * 10^-12 C^2/Nm^2)) * ((16 * 10^-6 C / 8 * 10^-6 m) - (19 * 10^-6 C / 8 * 10^-6 m))
W = 19 * 10^-6 C * (1 / (4 * pi * 8.854 * 10^-12 C^2/Nm^2)) * (-3 * 10^-6 C / 8 * 10^-6 m)
W = 19 * 10^-6 C * (1 / (4 * pi * 8.854 * 10^-12 C^2/Nm^2)) * (-3 * 10^-6 / 8) J
W = -2.03 * 10^-14 J
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NEED ASAP ON A TIMER!!!! In an accident, which vehicle will be more damaged and fly backwards faster?
[You are comparing the 1500 kg truck moving at 10 m/s
and the 800 kg car moving at 20 m/s]
the car will be more damaged and fly backward faster than the truck.
In an accident, the car will be more damaged and fly backward faster than the truck. This is because the car has less mass than the truck, so it will experience more force upon impact. Additionally, the car is moving at a faster velocity than the truck, which means that it will have more kinetic energy upon impact. Therefore, the car will be subjected to a greater force upon impact, which will cause more damage to the vehicle and cause it to fly backward faster than the truck.
It's important to note that this is a simplified analysis, and in reality, the outcome of the collision will depend on various factors such as the speed, direction, angle, and point of impact of the vehicles, the road conditions, the safety features of the vehicles, etc. A more accurate analysis would require detailed information and calculations of the specific variables involved in the accident.
Answer: The car will be more damaged and fly backward faster than the truck.
Explanation: In an accident, the car will be more damaged and fly backward faster than the truck. This is because the car has less mass than the truck, so it will experience more force upon impact. Additionally, the car is moving at a faster velocity than the truck, which means that it will have more kinetic energy upon impact. Therefore, the car will be subjected to a greater force upon impact, which will cause more damage to the vehicle and cause it to fly backward faster than the truck.
how does current flow in a closed circuit
Current flow in a closed circuit occurs when there is a complete path for electrons to flow through.
The flow of electrons is caused by a difference in electrical potential, also known as voltage, between two points in the circuit. This voltage difference causes electrons to move from the point of higher potential to the point of lower potential.
As the electrons move through the circuit, they encounter resistance, which slows down their movement. However, as long as the circuit remains closed, the electrons will continue to flow, creating a continuous flow of current.
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1. DETERMINING CENTRAL IDEAS Read the text under the subhead "Characteristics of a Traditional Economy." What is the central idea of this paragraph? Restate the central idea in a sentence.
The central idea of the paragraph is the role that traditional economies play in traditional societies.
A traditional economy is an economy that is based on the concept of individuals producing and exchanging goods that cater for their immediate needs.
What is a traditional economy?A traditional economy is an economy that is based on traditions, the past, and long-held beliefs. Economic choices like production and distribution are influenced by tradition. Traditional economies rely on farming, fishing, hunting, gathering, or some combination of these activities.
Compared to modern economies, traditional economies differ from them in a number of ways. They are geographically and locally based, use a trading system, produce a very little surplus, and don't throw away any of the parts of the things they make.
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