The iron nail didn't attract the paper clip because the domains of the two objects doesnot alligned.
What are Magnets ?A substance or thing that creates a magnetic field is called a magnet. The most noteworthy characteristic of a magnet, a force that pulls on other ferromagnetic elements like iron, steel, nickel, cobalt, etc., as well as the ability to attract or repel other magnets, is caused by this invisible magnetic field.
There are north and south poles on every magnet. The same poles resist one another whereas opposite poles are drawn to one another. The north-seeking poles of the iron's atoms line up in the same direction when it is rubbed against a magnet. A magnetic field is produced by the force that the aligned atoms produce.
The magnet's primary attributes are as follows:
Ferromagnetic materials are drawn to magnets.The opposing poles of the magnet attract one another, whereas the like poles repel one another.A hanging magnet always rests with its face toward north and south.The poles of the magnet are positioned in pairs. i.e. magnetic monopole doesn't exist.To learn more about Magnets refer to :
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A pulse has a speed of 5cm.s^-1 how far does it travel in 2,5
The distance travelled by the pulse in 2.5 seconds is 12.5 cm.
What is the distance travelled by the pulse in 2.5 seconds?
The distance travelled by the pulse in 2.5 seconds is calculated by applying the speed, time and distance equation as shown below.
Mathematically, speed, distance and time equation is given as;
d = v x t
where;
v is the speed of the pulset is the time of motion of the pulseThe distance travelled by the pulse in 2.5 seconds is calculated as;
d = ( 5 cm/s ) x ( 2.5 s )
d = 12.5 cm
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The complete question is below:
A pulse has a speed of 5cm.s^-1 how far does it travel in 2.5 seconds?
Are we more than flesh and blood ?
All human being are more than flesh and Blood we can do mechanical , Inteligence and other things that only blood and Flesh can not make up.
What is Human Body Composition ?Only six elements make up the majority of the human body: oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. The remaining mass is composed of sulphur, potassium, sodium, chlorine, and magnesium, which together make up around 0.85% of the total mass. These 11 components are all necessary components.
Cells, which are regarded as the basic building blocks of life, make up every living thing. Even one-celled creatures are sophisticated! Atoms create molecules, which create the cell organelles and structures within each cell. Similar cells form tissues in multicellular organisms.
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This penalty is imposed when an offense is made by a team or when the actual offender is unknown.
Unscramble: ENHCB NOMIR
This penalty in ice hockey is imposed when an offense is made by a team or when the actual offender is unknown is called bench minor penalty.
What is bench minor penalty ?The least severe kind of punishment is a minor one. Two minutes constitute a minor penalty. In most circumstances, the guilty player's side will play with fewer players due to the penalty box assignment.
Any skater who was on the ice at the time of the offence may serve the penalty if the team is handed a bench minor penalty (charged against the team rather than an individual player) and the offending player is the goalkeeper or a coach.
Rarely, if the player who committed the offence gets injured during the same play, the penalty may also be served by anybody else who was on the ice.
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Answer:
minor bench,
Explanation:
nomir should be pretty easy, put the M at the start because it is the most reasonable letter to put at the start. I knew that it was obviously minor
enhcb I knew was bench because minor bench obvi
"a crate is released from the highest point of a 12m ramp inclined at 45 degrees with the horizontal. The motion is frictionless. What is the speed of the crate at the base of the ramp? "
Answer:
mgh=1/2 m v^2
Explanation:
mgh=1/2 m v^2
v =sqrt( 2gh)
30. A stone falls freely from a building takes 5sec to reach at the ground a) What is the height of the building? b) Find the speed of the stone when it reaches at ground
Answer:
Height = 122.5 m
Speed = 49 m/s²
Explanation:
Thanks for the question.
We will use second equation of motion.
We know, u = 0 (body falls from rest)
t = 5 (given)
a = 9.8 m/s² (acceleration due to gravity)
s = ut + 0.5 at²
s = 0.5 x 9.8 x 25 = 122.5
So, the height of the building is 122.5 m.
Now, v = u + at
v = 0 + 9.8 x 5 = 49 m/s²
Cheers
4. A car travels at a speed of v = 54 km/h. During emergency braking, the wagon decelerates (brakes) with a deceleration (braking) of 3m/s per second. a) Convert the speed into the unit m/ s.b) Calculate how long the braking lasts. c) Sketch the v-t diagram and calculate the braking distance!
The given velocity is 54km/hr, which, when converted to m/s using 1km = 1000m and 1 hour = 3600 seconds, equals 15m/s.
How to calculate distance?Now substitute the initial speed u = 15m/s values.
v = 0m/s as the final velocity
Time is 6 seconds.
In the a= -3 m/ s2 equation,
s= ut + 1/2at2 s= 15 6+ 1/2(-3)(6)2 s= 90-45 s = 45m
As a result, after using the brakes, the car will halt for up to 45 meters.
The inverse of acceleration is deceleration. The deceleration will be calculated by dividing the final velocity minus the initial velocity by the time required for the velocity drop.
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In the metric mks system of units, the letter k stands for
In the metric MKS system of units, the letter k stands for kilogram (kg).
What is MKS system of units?The metre, kilogram, and second (MKS) serve as the foundational units in the MKS system of units, which is a physical method of measurement. The International System of Units (SI) is built on top of it, albeit SI has since been modified with new fundamental constants.
Following the Metre Convention of 1875, work on the kilogramme and metre international prototypes began. These prototypes were officially approved by the General Conference on Weights and Measures (CGPM) in 1889, formalizing the MKS system by utilizing the kilograms and metre as base units.
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Please help. Incomplete/Irrelevant answers will be reported.
Fred is on the way to work. He left his house at 6:30 am. By 6:50, he was 30 minutes away from work and had already travelled 15 miles.
A) At this pace, how many more miles will Fred need to drive? How many miles did Fred drive in total?
B) Now assume Fred ran into traffic and will only get into his work at 7:50 am. What is the average speed of his path from home to work?
The time that Fred taken to cover a distance of 15 miles is 20 minutes or 0.3 hours. For next 30 minutes, he will cover a distance of 22.5 miles. Then the total distance he traveled is 37.5 miles.
What is average speed ?The average speed of a moving body is the measure of the distance covered per unit time. The common unit of speed is m/s. Other units are miles/hr., ft./s, km.hr etc.
Given, that within 20 minutes, Fred travels 15 miles. He have to drive 30 minutes more. Then the distance covered within next 30 minutes is :
(30× 15)/20 = 22.5 miles.
Thus in total Fred have to drive 22.5 + 15 = 37.5 miles.
If Fred reaches the office by 7.50 am the total time he taken from 6.30 am is 1.33 hr .
Then average speed = 37.5 miles/1.33 hr = 28 miles/h
Therefore, the average speed of Fred is 28 miles/hour.
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The burning of gasoline in
a car releases about
3.0 X 104 kcal/gal. If a car averages 41 km/ gal when driving 110 km/h, which requires 25 hp, what is the efficiency of the engine under those conditions?
3.0 x 104 kcal/gal are released during gasoline combustion in an automobile. 18650 watts (converted into horsepower) divided by 78836 gave me an efficiency of 23.46%.
How to find the calculation?What is the engine's efficiency at those speeds if a car averages 41 km/gallon when traveling at 90 km/h, which takes 25 hp? Although I believe I have the right solution, I'm not sure. 746 watts are equivalent to 1 horsepower. 25 horsepower is equal to 18650 watts. 1 kcal equals 4186 joules (watts per second). (Ql / Qh) - 1 = e = W / Qh 2.26 gallons will be consumed in an hour if you go at 91 km/hr and utilize 1 gal/41 km. The 1 - Ql / Qh is not necessary, in my opinion, as no temperatures are specified. 34883 joules/sec result when I convert 30000 kcal/gal to watts. Due to the use of 2.26 gal, 78836 is the result of multiplying the above by 2.26. 18650 watts (converted into horsepower) divided by 78836 gave me an efficiency of 23.46%.To Learn more About gasoline combustion refer To:
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EXPLORING WORK AND ENERGY OBJECTIVES: - Measure the force required to move a mass over a certain distance using different methods. - Compare the force required to move different masses over different time intervals. MATERIALS: - clamps - cord, 1.00 m - spring balance (labeled in diagram as Force Meter) - inclined plane - masking tape - meterstick - set of hooked masses - stopwatch PROCEDURE 1 1. At one edge of the lab table, place a tape mark to represent a starting point. From this mark, measure exactly 0.50 m and 1.00 m. Place a tape mark at each measured distance. 2. Securely attach a 1.00 kg mass to one end of the cord and the spring balance to the other end. The balance will measure the force required to move the mass through different displacements. 3. Place the mass on the table top at the starting point. Hold the balance parallel to the tabletop so that the cord is taut between the balance and the mass. Carefully pull the mass at constant speed along the surface of the table to the 0.50 m mark (this may require a bit of practicel). As you pull, observe the force measured on the balance. If your balance is marked in grams or kilograms, convert to newtons so as to stay consistent with units. 4. Record the force and distance using the appropriate SI units. 5. Repeat steps 3 and 4 for a distance of 1.00 m. 6. Repeat entire procedure for a 0.2 kg mass. A. Did you exert the same force on the 1 kg mass as you did on the 0.2 kg mass to move them an equal distance? Why or why not? B. Did it require more force to move the mass 1.00 m than to move the same mass 0.50 m ? Why or why not? C. What force did you pull against? Explain
The force exerted on the 1 kg mass and the 0.2 kg mass to move them an equal distance would not be the same because the force required to move a mass depends on the mass being moved. The force required to move an object is given by the equation F = m * a, where F is the force, m is the mass, and a is the acceleration. Since the acceleration is constant in this experiment, the force required to move the 0.2 kg mass will be less than the force required to move the 1 kg mass.
How exploring work and energy?B. Yes, it would require more force to move the mass 1.00 m than to move the same mass 0.50 m. This is because the work done on an object is given by the equation W = F * d, where W is the work done, F is the force, and d is the distance. Since the force required to move the mass is constant, the work done would be proportional to the distance moved.
C. The force that was pulled against is the force of friction between the mass and the surface of the table. This force acts in the opposite direction to the applied force and must be overcome in order to move the mass. The magnitude of the force of friction depends on the mass, the coefficient of friction between the two surfaces, and the normal force acting on the mass.
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Identify the source of thermal energy in an internal combustion engine.
The source of thermal energy in an internal combustion engine is the combustion of fuel.
What is thermal energy?Thermal energy is the energy contained within a system that controls its temperature. The flow of thermal energy is defined as heat. The internal combustion engine works by igniting a mixture of fuel and air inside the engine's cylinders.
The combustion process releases heat energy, which is used to heat up the working fluid (usually air) which then expands and generates mechanical power to move the vehicle. This process converts the chemical energy stored in the fuel into thermal energy which then converted into mechanical energy to move the vehicle.
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Answer: combustion of fuel
Explanation:
In the Growing Plants activity within the lesson, you were asked to set up 3 pots:
Pot A: Bean seed, 2 lights on, 0 mL of water
Pot B: Bean seed, 2 lights on, 30 mL of water
Pot C: Bean seed, 2 lights on, 70mL of water
Which plant had the greatest height and mass at the end of 50 days?
A
B
C
The plant that had the greatest height and mass at the end of 50 days is Pot B
Which plant has the greatest height?We have to note that in the growth of the plants there are some parameters that we know to be very essential and those things that are very essential must be there if the plant is to grow and reproduce well.
The most essential things that the plant needs so as to function are;
a) Light
b) Water
c) Nutrients
If the water is too much, it can prevent the plant from getting to germinate and then grow up well in the soil.
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At t=3s, Bob was at x=9. If Bob has an average velocity of -4/s, what is his velocity at 11s?
The velocity of Bob at 11 seconds is 4.27 m/s.
What is the velocity of Bob at 11 seconds?
The velocity of Bob at 11 seconds is calculated by applying average velocity formula as shown below.
v = ( total displacement ) / ( total time )
v = ( X₃ + X₁₁ ) / ( 3 + 11 )
where;
X₃ is the displacement at 3 secondsX₁₁ is the displacement at 11 secondsv is the average velocity = 4 m/s4 = ( 9 + 11u ) / ( 14 )
where;
u is the velocity at 11 sThe velocity of Bob at 11 seconds is calculated as;
4 = ( 9 + 11u ) / 14
9 + 11u = 56
11u = 56 - 9
11u = 47
u = 47 / 11
u = 4.27 m/s
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Pulley system is marked wih a Mechanical Advantage of 2.5. A worker applies 450n to the pulley in an attempt to lift a sound system with a 1500n weight. Of this task we could say that:
The worker must apply 600N of force to lift the sound system. The mechanical advantage of 2.5 means that the worker only needs to apply 600N of force to lift the sound system.
What is Pulley system?We can employ pulley systems to provide ourselves a mechanical advantage by multiplying our input effort to apply more force to a load.
They can be used to apply tension within a system, such as in a Tensioned Line or Tyrolean, in addition to their traditional uses of hauling and lifting loads. The basic operating principles of pulley systems are explained on this page; for details on how to use them for hauling, check the topic on hauling systems.
The dynamic unit of Newtons is commonly used to express force, which is an impact that has both magnitude and direction (N). On this page, kilograms have been utilized for the sake of clarity.
Therefore, The worker must apply 600N of force to lift the sound system. The mechanical advantage of 2.5 means that the worker only needs to apply 600N of force to lift the sound system.
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In a certain lab experiment, a spring gun was placed on a table and fired a steel ball horizontally outward. A student determines that the ball starts 1.0 m above the floor and travels 2.7 m before striking the floor
In a certain lab experiment, a spring gun was placed on a table and fired a steel ball horizontally outward. A student determines that the ball starts 1.0 m above the floor and travels 2.7 m before striking the floor.
(a) Determine the time that the ball is in the air. (2 pts)
(b) Determine the initial velocity of the ball. (2 pts)
a) The time that the ball is in the air is 0.23 second.
b) The initial horizontal velocity of the ball is 11.74 m/s.
What is velocity?
The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction.
Vertical height of the point = 1.0 meter.
The horizontal distance travelled by the ball = 2.7 m.
a) The time that the ball is in the air is = √(H/2g)
= √(1.0/2×9.8)
= 0.23 second
b) The initial horizontal velocity of the ball is = 2.7 m/0.23 s
= 11.74 m/s
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Jacobie wanted to test the projectile motion of a pumpkin. His hypothesis was if the pumpkin had a larger mass, then the higher he could throw it, because the larger pumpkins would have more force. He bought three orange pumpkins and tested them all on the same day. His results are shown at right. Does the data support his hypothesis?
The data does not support his hypothesis because the heaviest mass travelled the least distance.
How does mass affect the height travelled by an object?The weight of an object is the force of gravity acting on the object and the force of gravity increases with increase in the mass of the object.
W = mg
where;
m is the mass of the objectg is acceleration due to gravityBased on law of conservation of energy;
P.E = K.E
mgh = ¹/₂mv²
h = ( v² ) / ( 2g )
The height travelled by an object increases with increase in speed of the object and heavier objects will have greater speed, hence travel greater height.
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The complete question is below:
Jacobie wanted to test the projectile motion of a pumpkin. His hypothesis was if the pumpkin had a larger mass, then the higher he could throw it, because the larger pumpkins would have more force. He bought three orange pumpkins and tested them all on the same day. His results are shown at right. Does the data support his hypothesis?
5kg = 10meters
10kg = 5 meters
15kg = 1 meter
Given two pieces of aluminum foil, make one into a ball and one into a box, distinguish the physical properties
The difference physical properties of aluminum ball and aluminum box is: ball is sphere and box is cubic in shape.
What are the differences between cube and sphere?A cube is shaped squarely, whereas a spherical is shaped roundly.A sphere is not a regular hexahedron because it is a solid object but lacks any faces, edges, or vertices. A cube is a regular hexahedron because it contains six square faces, twelve edges, and eight vertices.A sphere is a point with a radius that extends from its centre to its outermost point. Additionally, a cube has sides that link its vertices to one another.Learn more about sphere here:
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The wave speed on a string is 155 m/s when the tension is 78.0 N .What tension will give a speed of 177 m/s ?
If the linear mass density of the string stays constant, a tension of 4.92 x 10⁴ N will result in a wave speed of 177 m/s.
Examples of wave speed formula what is it?When the wavelength and wave frequency are known, the wave speed equation may be used to get the wave speed. Think about a wave in the water that has a 1 hertz frequency and a wavelength of 3 metres. Speed is calculated as follows: Speed = 3 m x 1 wave/s = 3 m/s.
v = √(T/μ)
where v is the wave speed, T is the tension in the string, and μ is the linear mass density of the string (mass per unit length).
To solve for the tension T, we may rearrange this equation as follows:
T = μv²
So, if we want to find the tension required to give a wave speed of 177 m/s, we can plug in the given values and solve for T:
T = μv² = (155 g/m) x (177 m/s)² = 4.92 x 10⁴ N
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the dust bowl was an example of millions of pounds of dry soil being blown away by the wind this is an example of
A: erosion
B: weathering
C. Deposition
Answer: A: erosion
Explanation:
The Dust Bowl was a period of severe dust storms that occurred in the central United States during the 1930s. It was caused by a combination of factors, including prolonged drought, poor farming practices, and high winds. During this period, millions of pounds of dry soil were blown away by the wind, leading to a significant loss of topsoil. This is an example of erosion.
An object is placed 40 mm away from a diverging lens with a focal length of 10 cm. Find the object distance and determine whether the image is upright or inverted and real or virtual.
The distance between the object and a diverging lens is -20 cm and the image is virtual and inverted.
How to calculate object's distance?The object distance for this scenario is 40 mm, as given in the problem statement.
To determine the image properties, we need to use lens equation which is 1/f = 1/u + 1/v where f is the focal length, u is the object distance and v is the image distance.
Using the given information, the lens equation can be written as:
1/10 = 1/40 + 1/v
Solving for v, we get:
v = -20 cm
As the image distance is negative, it means that the image is virtual and inverted.
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Which graph represents y=x²-b.
where b is a positive real number?
J
K
L
M
N
According to the question,M is a positive real number.
What is the positive ?
The positive is having an optimistic outlook on life. It means looking on the bright side of things, maintaining a positive attitude, and having hope for the future. Having a positive attitude can help you to stay motivated and focused, even when things get tough. It can also help you to build strong relationships with others and make the most of opportunities. Being positive can lead to greater success and improved well-being.It can also help you to build strong relationships with others and make the most of opportunities. Being positive can lead to greater success and improved well-being.
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A jet aircraft being launched from an aircraft carrier is accelerated from rest along a 94-meter track for 2.5s. What is the launch speed of the jet?
Explanation:
To solve for the launch speed of the jet, we need to use the equation of motion: v = at, where v is the final velocity, a is the acceleration and t is the time.
Given, a = 94m / (2.5s)^2 = 18.72 m/s^2
And t = 2.5s
So, v = at = 18.72 m/s^2 x 2.5s = 46.8 m/s.
Therefore, the launch speed of the jet is 46.8 m/s.
Answer:
46.8 m/s.
Explanation:
“We are observing wasted heat in everyday life for example in Pakistan heavy generated are installed, during their supply of electricity an excessive amount of wasted heat is produced in its surrounding, similarly when we drive a vehicle a heat is available in the surrounding of engine of that vehicle, we can also see many more such examples of wastage of heat. This heat is effecting the environment of Pakistan badly.
Is it conceivable to convert this wasted heat into some useful work/energy/electricity or not. If yes how? If no why
It is indeed possible to convert wasted heat into useful work, energy, or electricity. This process is known as "waste heat recovery," and it involves capturing the heat that is normally released into the environment and using it to generate electricity or to perform other useful work.
What are the ways to convert wasted heat into electricity?There are several ways to convert wasted heat into useful energy or electricity:
Heat exchangers: These devices transfer heat from one fluid to another, and can be used to capture heat from industrial processes, engines, and other sources.Thermoelectric generators: These devices use the difference in temperature between two materials to generate electricity. They can be used to capture heat from engines, industrial processes, and other sources.Organic Rankine Cycle (ORC) systems: These systems use a working fluid (such as water or a special fluid) to convert heat into mechanical energy, which can then be used to generate electricity.Combined heat and power (CHP) systems: These systems generate electricity and heat simultaneously, by using waste heat to generate electricity and using the heat generated by the electricity-generating process to heat buildings or other spaces.In Pakistan, it is possible to recover the wasted heat generated by the power plants and use it to generate electricity or perform other useful work. The government of Pakistan should invest in technology and research to develop these systems to minimize the environmental impact of wasted heat and to improve energy efficiency.
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What force is required to move a 4 kg object in a circle with an acceleration of 5.7 m/s2?
Answer: Therefore, to move a 4 kg object in a circle with an acceleration of 5.7 m/s², it requires a force of 22.8 Newton.
Explanation:
What force is required to move a 4 kg object in a circle with an acceleration of 5.7 m/s²?
Data:
F = force =
m = mass = 4 kg
a = acceleration = 5.7 m/s²
To solve, we apply the formula of Newton's Second Law, which is F = m * a, it is not necessary to solve, since we want to calculate the force, then
F = m * a F = 4 kg * 5.7 m/s² F = 22. 8 NTherefore, to move a 4 kg object in a circle with an acceleration of 5.7 m/s², it requires a force of 22.8 Newton.
To learn at https://brainly.com/question/18994284To learn at https://brainly.com/question/7889391To learn at https://brainly.com/question/4960343Formula for force:
[tex]F=ma[/tex]
force(measured in newtons) = mass(measured in kg) * acceleration(measured in m/s^2)
__________________________________________________________
Given:
[tex]m=4kg[/tex]
[tex]a=5.7m/s^2[/tex]
[tex]F=?[/tex]
__________________________________________________________
Finding force:
[tex]F=ma[/tex]
[tex]F=4\times5.7[/tex]
__________________________________________________________
Answer:
[tex]\fbox{F = 22.8 Newtons}[/tex]
The amount of kinetic energy (KE) depends on the mass of a moving object.
True
False
Answer: True
Explanation: To calculate KE you use 1/2 Mass x velocity^2
What type of electromagnetic wave is sent as a signal by a cell phone to the nearest cell tower?
The type of electromagnetic wave sent as a signal by a cell phone to the nearest cell tower is radio waves.
Cell phones use radio waves, a type of electromagnetic radiation, to communicate with the nearest cell tower. Radio waves have the longest wavelength and the lowest frequency of all electromagnetic waves. They fall within the frequency range of 3 kHz to 300 GHz. They are used for a wide variety of communications including television and radio broadcasting, cell phone and satellite communications, and wireless networking.
When a call is made or data is sent on a cell phone, the phone sends out a radio frequency (RF) signal to the nearest cell tower. The tower then sends the signal to the intended recipient. The signal is sent using a specific frequency band that is assigned for cellular communication. This frequency band is divided into smaller frequency channels and each channel is assigned to a specific cell phone call or data transfer.
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Answer: The type of electromagnetic wave sent as a signal by a cell phone to the nearest cell tower is radio waves.
Explanation: Cell phones use radio waves, a type of electromagnetic radiation, to communicate with the nearest cell tower. Radio waves have the longest wavelength and the lowest frequency of all electromagnetic waves. They fall within the frequency range of 3 kHz to 300 GHz. They are used for a wide variety of communications including television and radio broadcasting, cell phone and satellite communications, and wireless networking.
How much water at 17° C needs to be mixed with 204 g of water at 85° C for the final temperature to be 67° C?
An amusement park ride consists of a rotating
circular platform 8.73 m in diameter from
which 10 kg seats are suspended at the end
of 3.76 m massless chains. When the system
rotates, the chains make an angle of 23.9◦ with
the vertical.
The acceleration of gravity is 9.8 m/s^2
The centripetal acceleration of the system is: a_c = (v^2)/r , v = (r * ω) An amusement park ride consists of a rotating.
What is centripetal acceleration?
Centripetal acceleration is the acceleration of an object in a curved path. It is directed towards the center of the circle and is equal to the square of the object's velocity divided by the radius of the circle.
Where ω is the angular velocity of the system
ω = 2πf
Where f is the frequency of rotation
f = (1/T)
Where T is the period of rotation
T = (2π * (8.73m/2))/ (3.76m/s)
v = (r * (2π * (1/T)))
a_c = ((r * (2π * (1/T)))^2)/r
a_c = (2π^2 * (8.73m/2)^2 * (1/T^2))/ (8.73m/2)
a_c = (2π^2 * (8.73m/2) * (1/T^2))
a_c = (19.64 * (1/T^2))
a_c = (19.64 * (1/((2π * (8.73m/2))/ (3.76m/s))^2))
a_c = (19.64 * (1/((2π * (4.365m))/ (3.76m/s))^2))
a_c = (19.64 * (1/(2π * (1.163m/s))^2))
a_c = (19.64 * (1/(2π * (1.163m/s))^2))
a_c = 19.64 * (1/3.8139)
a_c = 5.12 m/s^2
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Janet’s science teacher assigns Janet her classmates
The best investigation would be use a different amount of mass in the cart for five different trials, and measure the force needed to start the cart rolling each time.
Speed is not directly impacted by mass. It establishes how quickly an object can increase its speed (accelerate) in response to a specific force. Lighter objects change their speed by a given quantity with a given force in a shorter amount of time.
More mass means that heavier items are more challenging to move and stop. Greater mass in heavier items makes them more resistant to change than lighter ones. A bicycle or a Cadillac can be propelled or stopped once in motion. It is more difficult to start or stop an object the more big it is (has more inertia). Potentially, an object with the same kinetic energy could also be slower and heavier.
Kinetic Energy's formula is KE = 1/2 mv2. Because mass and kinetic energy are directly correlated, an object's kinetic energy rises as mass does. The same may be said for velocity.
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9. If the mass of a 200 N object is cut in half, what would happen to its weight in Newtons?
Answer:
as we know that weight = mass ×gravity (earth's gravity 9.8m.s²)the weight will be also be cut in halfmass is directly proportional to the weightExplanation:
let's say our mass is 50 kgour gravity is 9.8m.s²therefore 50×9.8=490Nnow cut the mass in half therefore 25×9.8=245N