Answers
a. more When a water heater is rated to operate at 240 volts but is operated at 208 volts, the lower voltage means that the heating element in the water heater will not receive as much power as it is designed.
What is a power ?Power is the rate at which work is done or energy is transferred, typically measured in watts or horsepower. It represents the amount of energy used or transferred per unit time.
Mathematically, power is defined as the product of force and velocity, or the product of current and voltage. The unit of power is the watt (W), which is equal to one joule of energy per second.Power is an important concept in physics, engineering, and technology. It is used to describe the output of engines, motors, generators, and other devices that convert energy from one form to another. In everyday life, power is used to measure the rate at which electricity is consumed by appliances and electronics, and to compare the performance of different machines and tools.
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Related Questions
In an experiment similar to the one you performed in Week 3, an experimenter measures the count rate of a radioactive element 100 times, calculates the mean and standard deviation of the data, and organizes the data into four bins:
Interval Number of Occurrences
n < n 15
< n < n 50 - 15
n < n < + 38
n > n + 12
The experimenter expects a Gaussian distribution. (For simplicity, assume 68 % of the counts fall within one standard deviation of the mean rather than the more exact value of 68.27 \%.) What is x?
Answers
Answer:
The answer is "1.5625".
Explanation:
Please find the complete question with its solution file in the attachment.
.A 7.5 kg bowling ball would require what force to accelerate it down an alleyway at a rate of
3.2 m/s² down the alley
Answers
Newton's second law tells us that force is directly proportional to mass and acceleration, such that:
F = m aWhere force is measured in newtons (N).
The three fundamental laws of Newton are:
Law of inertia: every body resists change.Force Law: Force equals mass times acceleration.Law of action/reaction: every action will have a particular reaction.Newton's laws are fundamental to understanding the interaction between bodies. Today they are still valid, although at the atomic level it has some exceptions that quantum mechanics studies.
A 7.5 kg bowling ball would require what force to accelerate it down an alleyway at a rate of 3.2 m/s² down the alley
Data:
m = 7.5 kg
F = ?
a = 3.2 m/s²
The formula to calculate the force is: F = m * a
We clear, but in this case it is not necessary, since we only want to calculate the force.
F = m * a F = 7.5 kg * 3.2 m/s² F = 24 NThe force you need to accelerate down the alley is 24 Newtons.
An object with a kinetic energy of 250j has a mass of 32 kg what is the velocity of the object?
Answers
Taking into account the definition of kinetic energy, the velocity of the object with a kinetic energy of 250 J and a mass of 32 kg is 3.95 m/s².
Deinition of Kinetic energyKinetic energy is the energy possessed by a body or system due to its movement.
Kinetic energy is defined as the amount of work necessary to accelerate a body of a certain mass and in a position of rest, until it reaches a certain speed. Once the final speed is reached, the amount of kinetic energy accumulated will remain constant, that is, it will not vary, unless another force acts on the body again.
Kinetic energy is represented by the following expression:
Ec = 1/2×m×v²
Where:
Ec is kinetic energy, which is measured in Joules (J).m is mass measured in kilograms (kg).v is velocity measured in meters over seconds (m/s).Velocity of the objectIn this case, you know:
Ec= 250 Jm= 32 kgv= ?Replacing in the definition of kinetic energy:
250 J = 1/2× 32 kg×v²
Solving:
250 J÷ (1/2× 32 kg) = v²
15.625 J÷kg = v²
√15.625 J÷kg = v
3.95 m/s² = v
Finally, the velocity of the object is 3.95 m/s².
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A golf ball flies through the air after being struck with a golf club. Which of the following statements describes the force on the ball as momentum is transferred between the club and ball?
A. The ball does not experience any force.
B. The force experienced by the ball is greater than the force experienced by the club.
C. The force experienced by the ball equals the force experienced by the club.
D. The force experienced by the ball is weaker than the force experienced by the club.
Answers
Answer:
C) The force experienced by the ball equals the force experienced by the club.
Explanation:
When the golfer strikes the ball with his club, the club exerts a force on the ball. Due to Newton's Third Law Of Motion [Every Action has an equal and opposite reaction], the ball also exerts an equal force on the club. However,
As the mass of the club is usually greater than the mass of the ball, it accelerates slower; While the ball way faster, following the equation : F=ma
Which two terms is velocity the combination of?
gravity and direction
force and direction
speed and direction
speed and momentum
Answers
The term velocity is the combination of speed and direction.
What is Velocity?The total displacement covered by any object per unit of time is known as velocity. The generally considered unit for velocity is a meter per second. It depends on the magnitude as well as the direction of the moving body. The unit of velocity is meter/second. It can also be represented by the infinitesimal rate of change of displacement with respect to time.
If an object is moving eastwards, then its velocity is expressed as being eastwards. If an object is moving southwards, then its velocity is described as being southwards. So an airplane moving towards the north with a speed of 450 km/hr has a velocity of 450 km/hr northward.
Speed has no effect on direction as the speed of any object or body is a scalar quantity and the velocity at any given time is expressed with the magnitude of velocity as well as with the direction of motion of an object.
The term velocity is the combination of speed and direction. therefore the correct option is option C.
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can anyone please explain this question?
Answers
Step 1: ( 116+124 )/ 2 = 120mm
Remember, the question asks for the extension of the spring and not the total length. In the data given, at 0 Newton, the spring has a length of 108mm. To find the extension, subtract the new length with the original spring’s length to find out how much the string stretched.
Step 2: 120-108 = 12mm
Therefore, the answer is B. I hope this clarified for you.
ANSWER: B
A mass attached to a vertical spring has position function given by
Answers
ANSWER:
a) -11.4 in/s
b) -29.3 in/s^2
STEP-BY-STEP EXPLANATION:
We have the following function corresponding to the position at a given time:
\(s(t)=5\sin (3t)\)If we differentiate this function with respect to time, we obtain the velocity function, like this:
\(\begin{gathered} v(t)=s^{\prime}(t) \\ s^{\prime}(t)=\frac{d}{dt}(s(t)) \\ \frac{d}{\mathrm{d}t}(5\sin (3t))=15\cos (3t) \\ v(t)=15\cos (3t) \end{gathered}\)We calculate the velocity by replacing t = 5, just like this:
\(\begin{gathered} v(t)=15\cos (3\cdot5)=15\cos (15) \\ v(t)=-11.4\text{ in/s} \end{gathered}\)If we differentiate the function again, we obtain the acceleration function, as follows:
\(\begin{gathered} a(t)=v^{\prime}(t) \\ v^{\prime}(t)=\frac{d}{dt}(v(t)) \\ \frac{d}{dt}(15\cos (3t))=-45\sin \mleft(3t\mright) \\ a(t)=-45\sin (3t) \end{gathered}\)We calculate the acceleration by replacing t = 5, just like this:
\(\begin{gathered} v(t)=-45\sin (3\cdot5)=-45\sin (15) \\ v(t)=-29.3in/s^2 \end{gathered}\)What does it mean for a chemical equation to be balanced?
Answers
Answer:
The number of each type of atom is the same for both the reactants and products.I hope this helps
Solve 13.004+3.09+112.947
Answers
Answer:
The answer is 129.041
Explanation:
Because when you add desimals you need to keep them lined up and not uneven
1. The kinetic energy of a car is 8 106 J as it travels along a horizontal road. How much work is required to stop the car in 10 s? (A) zero joules (B) 8 105 J (C) 8 107 J (D)8 104 J (E) 8 106 J
Answers
The power to stop the car with kinetic energy of a car is \(8*10^{6} J\) as it travels along a horizontal road is \(8*10^{5} watt\), option B
What is Kinetic energy ?Kinetic energy can be seen as one that is been recorded when an object is able to move from a place , in a broad term we can say this is the energy that can be attributed to that of someone leaving a place and go to another place hence we can see it as the one in the motion.
The definition of energy as the "power to accomplish work" refers to the capacity to apply a force that moves an object. Even if the word is vague, it is clear what energy actually means: it is the force that causes objects to move. The two types can be attributed to the one we know which are kinetic and potential energy.
\(Power \frac{Energy}{time}\)
\(Energy = 8*10^{6} J\)
\(time = 10 s\)
\(Power = \frac{8*10^{6} J}{10}\)
\(power = 8*10^{5} watt\)
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proper question;
The kinetic energy of a car is 8 × 106 J as it travels along a horizontal road. How much power is required to stop the car in 10 s? (A) zero joules (B) 8 105 J (C) 8 107 J (D)8 104 J (E) 8 106 J
Which two options are forms of potential energy?
A. Chemical energy
B. Sound energy
c. Electrical energy
D. Thermal energy
E. Nuclear energy
Answers
A. Chemical energy
E. Nuclear energy
Therefore, options A and E are the correct answers.
A block lies on a horizontal frictionless surfaces.A horizontal force of 100N is applied to the block giving rise to an acceleration of 3.0 .(a) determine the mass of the block . (b) calculate the distance of the block will travel in the force applied for 10s .(c) calculate the speed of the block after the force has been applied for 10s
Answers
Answer:
Explanation:
A) The mass of the block is 33.3 Kg.
We know that F=ma
m=F/a
Where,
F⇒Force
m⇒mass
a⇒acceleration
Given,
F=100N
a=3m/s^2
m=100/3
m= 33.3Kg.
Therefore the mass of the block is 33.3 kg.
B) Distance traveled in 10s is 150m.
According to Newton's laws of motion,
s=ut+1/2at^2
s⇒displacement
u⇒initial velocity
t⇒time
Given,
u=0
t=10s
a=3m/s^2
s=0+1/2*3*100
s=150m.
Therefore distance traveled by the block after 10s is 150m.
C)The speed of the block after 10s will be 30m/s.
We know that
v^2=u^2+2as
v⇒Final velocity
u⇒initial velocity
v^2=0+2*3*150
v^2=900
v=30m/s.
Therefore the velocity of the block will be 30m/s after 10s.
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options are:
a)4Cn
b)5Cn
c)6 Cn
d)3 Cn
Answers
Answer:
Option B. 5 nC
Explanation:
From the question given above, the following data were obtained:
Capicitance (C) = 100 pF
Potential difference (V) = 50 V
Quantity of charge (Q) =?
Next, we shall convert 100 pF to Farad (F). This can be obtained as follow:
1 pF = 1×10¯¹² F
Therefore,
100 pF = 100 pF × 1×10¯¹² F / 1 pF
100 pF = 1×10¯¹⁰ F
Next, we shall determine the quantity of charge. This can be obtained as follow:
Capicitance (C) = 1×10¯¹⁰ F
Potential difference (V) = 50 V
Quantity of charge (Q) =?
Q = CV
Q = 1×10¯¹⁰ × 50
Q = 5×10¯⁹ C
Finally, we shall convert 5×10¯⁹ C to nano coulomb (nC). This can be obtained as follow:
1 C = 1×10⁹ nC
Therefore,
5×10¯⁹ C = 5×10¯⁹ C × 1×10⁹ nC / 1 C
5×10¯⁹ C = 5 nC
Thus, the quantity of charge is 5 nC
which of these are lost when the body repairs?
oxygen and calcium
calcium and sodium
sodium and potassium
potassium and oxygen
Answers
c. Sodium and potassium
What is called perspiration?Perspiration, water given off by the intact skin, either as vapor by simple evaporation from the epidermis or as sweat, a form of cooling in which liquid actively secreted from sweat glands evaporates from the body surface.
When our body is sweating sodium and potassium is lost from the body along with water.
In order to maintain the integrity of the cells in the body ,Sodium and potassium are very important.
Sweat is also known as perspiration.
So,
By maintaining the proper cell functioning and cell vitality optimum level of sodium and potassium should be maintained in the body.
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When you move your muscles, chemical energy in the cells is converted into mechanical and thermal energy. What is this an example of? (2 points)
Answers
Answer:
Law of conservation of energy
Explanation:
In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.
Answer:
Law of consevation of energy
Explanation:
This is because you are transforming the energy as well as conserving it in diffrent ways.
Which statement describes earthquakes?
They release energy
They are caused by reduced stress in rocks
They begin at the epicenter
The result for movement on earth’s surface
Answers
Answer:
they release energy
Explanation:
An earthquake is the abrupt release of energy from the earth's crust that causes the earth's surface to shake . Thus , seismic waves are produced. The kind and severity of an earthquake are based on the local seismic activity . therefore the correct answer is option A.
What is the equator?The Equator is an imaginary line passing through the middle of a globe. It is equidistant from the North Pole and the South Pole, Its is a horizontal line residing at 0 degrees latitude .
An earthquake is the abrupt release of energy from the earth's crust that causes the earth's surface to shake . Thus, seismic waves are produced. The kind and severity of an earthquake are based on the local seismic activity .
Thus, the correct answer is option A .
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1000N and pa = 10 ^8 .then find area
Answers
Pressure in pa = (total force) x (area)
10⁸ pa = (1000 N) x (area)
Divide each side of the equation by 1000N.
10⁸ pa/1000N = area
area = 10⁵ square meters
NEED HELP ON QUESTION ASAP! !
If answer is correct I'll rate you five stars a thanks and maybe even brainliest!
Please can you explain what this paragraph is trying to say. Also what does it mean in the sentence 'the difference in charge across the battery provides push for current' and what is the difference in charge.
Here's paragraph I need to have a simple definition of:
A high waterfall is also like a large voltage. It will transfer a lot of energy to the water (charge), making the river flow very fast (a large current) the difference in height makes the river flow. In a circuit , the difference in charge across battery provides push for the current.
Answers
It is saying that a high waterfall has a lot of potential energy that can transfer to the water and cause it to flow very fast, which is similar to how a large voltage in an electric circuit can create a large current. The difference in height of the waterfall causes the water to flow, just as the difference in charge across a battery provides the push or force for the current to flow in a circuit.
In an electric circuit, voltage is the measure of the electric potential difference between two points, and it is measured in volts. Current is the flow of electric charge through the circuit, and it is measured in amperes or amps. The difference in charge across the battery refers to the potential difference or voltage between the positive and negative terminals of the battery, which creates an electric field and provides the force or push for the current to flow through the circuit.
How to explain third law when a boat is moving away from a paddock when a women’s feet is on the paddock and the boat
Answers
Answer:
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When the man jumps from a boat, he applies force on the boat due to which boat moves backward. An equal force is exerted by the boat on the man which helps the man to jump out of the boat.
name a suitable thermometer for steady temperature of 1000 degree Celsius?
Answers
Answer: A platinum resistance thermometer
Explanation:
It is a versatile instrument for temperature measurement in the range from — 200° to 1000°C. It is used both for precision measurements of the highest accuracy and for routine industrial work.
Answer:
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Three vectors with magnitudes 120N, 100N and 80N are given in the diagram below. Write them using the unit vectors i, j and k. . 100N 80N 53° 40° Y 37° 120N X Trigonometric values you may use Cos37⁰ = 0.8 = sin53° sin37° 0.6 = cos53° cos40° = 0.766, sin40° = 0.643
Answers
The vectors can be expressed using unit vectors as follows:
Vector A = 96N i + 96N j + 0N k
Vector B = 76.6N i + 64.3N j + 0N k
Vector C = 64N i + 48N j + 0N k.
In the given diagram, let's consider the vectors as follows:
Vector A with magnitude 120N, Vector B with magnitude 100N, and Vector C with magnitude 80N.
To express these vectors using unit vectors i, j, and k, we need to determine their respective components in the x, y, and z directions.
For Vector A (120N), we have the following information:
Magnitude = 120N
Direction: X-axis (cosine component) with an angle of 37° and Y-axis (sine component) with an angle of 53°.
Using the trigonometric values provided:
cos37° = 0.8 and sin53° = 0.8
Therefore, the components of Vector A are:
Ax = 120N * 0.8 = 96N (in the X-direction)
Ay = 120N * 0.8 = 96N (in the Y-direction)
Az = 0N (no component in the Z-direction)
Thus, Vector A can be written as 96N i + 96N j + 0N k.
Similarly, using the trigonometric values for Vector B and Vector C, we can calculate their components:
For Vector B (100N):
Bx = 100N * cos40° = 100N * 0.766 = 76.6N
By = 100N * sin40° = 100N * 0.643 = 64.3N
Bz = 0N
Vector B can be expressed as 76.6N i + 64.3N j + 0N k.
For Vector C (80N):
Cx = 80N * cos37° = 80N * 0.8 = 64N
Cy = 80N * sin37° = 80N * 0.6 = 48N
Cz = 0N
Vector C can be written as 64N i + 48N j + 0N k.
In summary, the vectors can be expressed using unit vectors as follows:
Vector A = 96N i + 96N j + 0N k
Vector B = 76.6N i + 64.3N j + 0N k
Vector C = 64N i + 48N j + 0N k.
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Superman must stop a 115-km/h train in 160 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 × 105 kg. Determine the force that must be exerted on the train.
Answers
Answer:
1.148×10^6 N
Explanation:
The kinetic energy of the train is ...
KE = (1/2)mv^2 = (1/2)(3.6×10^5 kg)(115 km/h × (1000 m/km)/(3600 s/h))^2
≈ 1.83681×10^8 J
This is the work required to stop the train, so is ...
F·d = KE
F = KE/d = (1.83681×10^8 J)/(160 m) = 1.148×10^6 N
The force required to stop the train is 1.148×10^6 newtons.
PLZ WHAT I DOO
I BROKE A WINDOW WHAT I DO
Answers
Hmmmm, you either tell your parent, try to fix it, or blame it on the dog with a baseball bat that always comes on your yard and tries to eat you.
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write a mini TWO Paragraph "Blog Post" on the effects of the loss of gravity on the human body. Tell how it will help astronauts on a mission to MARS.
PLEASE HELP!! IT'S IMPORTANT!! I'm NOT GOOD AT SCIENCE:( PLEASE I NEED THIS NOW MY TEACHER WANTS IT!!!!!
Answers
The loss of gravity has a significant impact on the human body. When in a state of weightlessness, the body's muscles and bones are not required to work as hard as they do on Earth.
As a result, astronauts in space experience muscle and bone loss, as well as a decrease in overall physical fitness. This is due to the fact that gravity is no longer providing the resistance needed for muscles and bones to maintain their strength.
What is the gravity about?This effect can be beneficial for astronauts on a mission to Mars. The journey to Mars takes several months, and astronauts will be in a state of weightlessness for a large portion of that time.
The muscle and bone loss that occurs in space can be used to the astronaut's advantage. When they land on Mars, the planet's gravity will be only about 38% of Earth's. As a result, the astronauts will be better able to adapt to the planet's lower gravity and carry out their mission.
Hence, It's important to note that these effects are not permanent, and scientists are currently researching ways to mitigate the negative effects of weightlessness and to develop exercise regimens and other countermeasures to help astronauts maintain their physical fitness during long-duration spaceflight.
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Alan starts from his home and walks 1.3 km east to the library. He walks an additional 0.68 km east to a music store. From there, he walks 1.1 km north to a friend’s house and an additional 0.42 km north to a grocery store before he finally returns home along the same path. What is his final displacement and total distance traveled?
Answers
Answer: final Displacement = 0 km, total distance covered =7 km
Explanation:
Given the following :
From home to library = 1.3 km East
Library to music store = 0.68km East
Music store to friend's house = 1.1km North
Friend's house to grocery store = 0.42 km North
Displacement is the net change in distance traveled.
Eastward distance :
To = (1.3 + 0.68)km = 1.98km East
Fro = (0.68 + 1.3)km = 1.98 km East
Δ distance = (1.98 - 1.98) = 0
Northward direction:
To = (1.1 + 0.42)km = 1.52km north
Fro = (0.42 + 1.1)km = 1.52km North
Δ distance = (1.98 - 1.98) = 0
Hence final Displacement = 0
Total distance covered = 2 × (1.3 + 0.68 + 1.1 + 0.42) = 2 × 3.5
= 7km
How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns
Answers
Complete Question
How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns.
The output from the secondary coil is 12 V
Answer:
The value is \(N_s = 21 \ turns \)
Explanation:
From the equation we are told that
The input voltage is \(V_{in} = 120 \ V\)
The number of turns of the primary coil is \(N_p = 210 \ turn\)
The output from the secondary is \(V_o = 12V\)
From the transformer equation
\(\frac{N_p}{V_{in}} =\frac{N_s}{V_o}\)
Here \(N_s\) is the number of turns in the secondary coil
=> \(N_s = \frac{N_p}{V_{in}} * V_s\)
=>\(N_s = \frac{210}{120} * 12\)
=>\(N_s = 21 \ turns \)
Work with a group to develop a plan to reduce water use at school
Answers
The water can be conserved by some of the given tips, turn off the water when washing your hands, Carry a refillable water bottle, Skip the tray in the lunch line, use only one plate, Report leaks to the appropriate authorities, etc.
What is the conservation of water?The protection, management, and development of surface and groundwater resources as well as pollution prevention.
There are some tips to conserve water or reduce water use in school,
Turn off the water when washing your hands - On average, people wash their hands nine times each day. People can save up to six gallons of water per day on average if they turn off the faucet while washing their hands.Use fewer utensils in the canteen - Water waste in cafeterias and dining areas is well-known. Dishwashing consumes the majority of the water used in industrial kitchens. Keeping the number of dirty dishes they produce to a minimum is one approach for students to conserve water.Report leaks to the appropriate authorities - Students are frequently the first on campus to discover leaks. Report running toilets, busted water fountains, busted hoses, and leaky faucets. 100 gallons of water a day can be wasted by a single dripping faucet.Form a Club and Organize - When students organize into recognized clubs, they often have more success working with the administration of their school.Therefore, these recommendations for pupils on how to conserve water at school may seem minor or small in comparison to the tremendous environmental issues that exist today.
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Two blocks are attached by a string as shown. The blocks are released from rest and
allowed to move freely. The sloped ramp angle is θ = 30⁰. Find the coefficient of friction
on the blocks (assume they have the same coefficient), assuming the blocks have the
same mass, and given that the blocks travel a distance of 0.50 m in a time of 0.935 s.
Answers
The coefficient of friction between the two blocks is 0.194.
The problem involves finding the coefficient of friction between two blocks of equal mass attached by a string that moves over a sloped ramp with an angle of 30 degrees. The blocks start from rest and are allowed to move freely. The distance traveled by the blocks is 0.50 m, and the time taken to travel this distance is 0.935 s. To solve the problem, we need to consider the forces acting on the system of blocks. The forces acting on the blocks are the gravitational force, the tension in the string, and the frictional force. As the blocks are moving up the ramp, the force of gravity is pulling them down. The tension in the string is pulling the blocks up the ramp. The frictional force is opposing the motion of the blocks and is acting in the opposite direction to the tension in the string.
To determine the coefficient of friction, we can use the equations of motion to find the acceleration of the blocks. Once we have the acceleration, we can use Newton's Second Law to find the net force acting on the blocks. We can then use the force of friction to find the coefficient of friction. Using the equations of motion, we can find the acceleration of the blocks:
a = 2d/t^2
where d is the distance traveled by the blocks and t is the time taken to travel the distance. Plugging in the given values, we get:
a = 2(0.50 m)/(0.935 s)^2 = 1.15 m/s^2
Next, we can use Newton's Second Law to find the net force acting on the blocks:
ΣF = ma
where ΣF is the sum of the forces acting on the blocks. Plugging in the known forces, we get:
T - mg sin θ - μmg cos θ = ma
where T is the tension in the string, m is the mass of the blocks, g is the acceleration due to gravity, θ is the angle of the ramp, and μ is the coefficient of friction.
We can simplify this equation by substituting mg sin θ for the component of the weight of the blocks that is acting down the ramp and mg cos θ for the component of the weight that is acting perpendicular to the ramp:
T - mg sin θ - μmg cos θ = ma
T - mg(1/2) - μmg(√3/2) = ma
We can also use the equation for the tension in the string:
T = 2mg sin θ
Substituting this into the equation for net force, we get:
2mg sin θ - mg(1/2) - μmg(√3/2) = ma
Simplifying and solving for μ, we get:
μ = (2gsinθ - a)/(2gcosθ)
Substituting the given values, we get:
μ = (2(9.81 m/s^2)sin 30° - 1.15 m/s^2)/(2(9.81 m/s^2)cos 30°) = 0.194
Therefore, the coefficient of friction between the two blocks is 0.194.
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What is meant by the conservation of energy?
A.Energy can change, but has to return to initial state eventually
B.Energy cannot be created or destroyed, only transferred
C.Energy cannot be seen, only felt
D.Energy cannot change types
Answers
Answer:
B is the Right answer of this question
how much work is done to a 2.0 kg cart that moves 10.0 m/s to 15 m/s
Answers
The cart has undergone work done is 125 Joules of labor.
A finished job is what?To move an object, it must be transformed into energy. Force can be used to transmit energy. The work done is the amount of energy that a force used to move an object.
We must apply the following formula to determine the amount of work done on the cart:
W = K = (1/2)mvf2 - (1/2)mvi2 where m is the cart's mass, vf is the end velocity, and vi is the beginning velocity. K is a symbol for kinetic energy change.
By entering the specified values, we obtain:
\(W = (1/2) x 2.0 kg x (15 m/s)^2 - (1/2) x 2.0 kg x (10 m/s)^2\)
\(W = (1/2) x 2.0 kg x 225 m^2/s^2 - (1/2) x 2.0 kg x 100 m^2/s^2\)\(W = (1/2) x 2.0 kg x 225 m^2/s^2 - (1/2) x 2.0 kg x 100 m^2/s^2\)
\(W = 125 J\)
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