A line of best fit is a straight line drawn through the most points on a scatter plot, with an equal number of points above and below the line. It is used to investigate the nature of the relationship between two variables. The correct option is d.
What is line of best fit?A straight line with the best fit is one that minimizes the distance between it and some data.
In a scatter plot of varying data points, the line of best fit is used to express a relationship. It is a result of regression analysis and can be used to forecast indicators and price movements.
It is important to note that your line does not need to pass through any of the points on the plot; it only needs to bisect the area that contains the data points.
Thus, none of the options are correct, the correct one is d.
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When a 13- kg k g cart undergoes a 1.4 m/s m / s increase in speed, what is the impulse on the cart? Express your answer to two significant figures and include the appropriate units.
The impulse of the cart is 18.2 kg-m/s
We are required to find the impulse on the cart
It is given to us that mass of cart is 13kg
It is also given that increase in speed is 1.4 m/s
We are required to find the impulse on the cart
Impulse :
Impulse of a body is defined as change in the momentum of the cart.
Impulse I = m(v-u)/t
Now (v-u)/t is the change in speed and it is given to us that there is increase in speed and hence it must be positive.
(v-u)/t = 1.4m/s
Therefore,
Impulse of cart is equal to its change in momentum:
Putting the value of mass in the equation, we get:
I = m(v-u)/t
= 13 x 1.4 = 18.2 kg-m/s
Therefore, the impulse of the cart is 18.2 kg-m/s
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Explain the Newton's formula for the velocity of sound in air and raplace correction ?
Explanation:


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State Newton's formula for the velocity of sound in a gas. What is the Laplace's correction?
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Updated on : 2022-09-05
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According to Newton, velocity of sound in any medium is given by v=pE where E is the modulus of elasticity and p is the density of the medium.
For gases E = B, bulk modulus
∴v=pB.............(1)
When sound waves travel through a gas alternate compressions and rarefactions are produced. At the compression region pressure increases and volume decreases and at the rerefaction region pressure decreases and volume increases. Newton assumed that these changes take place under isothermal conditions i.e., at a constant temperature.
Under isothermal condition, B = P, pressure of the gas.
∴ In (1) v=pP.............(2)
This is Newton's formula for velocity of sound in gas.
For air at NTP, P=101.3 kPa and p=1.293 kgm−3
Substituting the values of P and p in, equation (1) we get v = 280 m/s. This is much lower than the experimental value of 332 m/s. Thus Newton's formula is discarded.Laplace's correction:
According to Laplace, in a compressed region temperature increases and in a rarefied region it decreases and these changes take place rapidly. Since air is an insulator, there is no conduction of heat. Thus changes are not isothermal but adiabatic.
Under adiabatic condition, B=y P, where y is the ratio of specific heats of the gas.
Substituting in equation (1) v=pγP
The above equation is called Newton - Laplace's equation
Sunstituting the values of P, p and y in the above equation, give the velocity of sound in air at NTP to be about 331 m/s. This is in close agreement with the experimental value.
pls help i do not understand this and it’s a unit test question is in the picture :))
The sides of a small rectangular box are measured to be 1.80 ± 0.01 cm, 2.05 ± 0.02 cm, and 3.1 ± 0.01 cm long. Its volume and uncertainty is 11.4 ± 0.2 cm³.
What is true value?While doing certain experiments or calculation we can end a less precise value that what actually it's the answer of the experiment, this exact value of the experiment is called true value.
What is uncertainty in physics?In physics uncertainty refers to the possible variation from the true value. Variation is calculated for possible increment in the precision of the result.
These are the rules for doing basic operation on uncertainty :
If you're adding or subtracting quantities with uncertainties, you add the absolute uncertainties.
If you're multiplying or dividing, you add the relative uncertainties.
If you're multiplying by a constant factor, you multiply absolute uncertainties by the same factor, or do nothing to relative uncertainties.
Now in the given question we have to multiply the uncertainty, so we will simply add the relative error.
To find volume of the cubic structure we simply multiply the error free values.
Volume of the cuboid = Length × Breadth × Height
Volume of the cuboid = 1.80 cm × 2.05 cm × 3.10 cm
Volume of the cuboid = 11.4 cm³
Uncertainty in the volume[tex]= \frac{0.01\ cm}{1.80\ cm} \times 100\% + \frac{0.02\ cm}{2.05\ cm} \times 100\% + \frac{0.01\ cm}{3.1\ cm} \times 100\%[/tex]
= (0.55 + 0.97 + 0.32) × 11.4
= 1.84 × 11.4
= 20.976
Now,
δA = Percent Uncertainty / 100%
= 20.976 / 100
= 0.2 cm³
Thus from the above conclusion we can say that Its volume and uncertainty is 11.4 ± 0.2 cm³.
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If a falling rock were somehow equipped with a speedometer, what would the speedometer reading on the falling rock be 4.5 seconds after it drops from rest?
How about 8 seconds after it is dropped?
Om/s and 4 m/s
45 m/s and 80 m/s
4.5 m/s and 8 m/s
Answer: 45 m/s and 80 m/s
Explanation:
The acceleration due to gravity on an object is 9.8 m/s^2
Simply multiple this my the the time that it has fallen (in seconds) and this will provide you with its velocity at that time.
(4.5 seconds) (9.8) = 44.1 m/s
(8 seconds) (9.8) = 78.4 m/s
Values are rounded off for the final answer.
A cart moving across a level surface accelerates
uniformly at 1.0 meter per second² for 2.0
seconds. What additional information is
required to determine the distance traveled by
the cart during this 2.0-second interval?
The initial velocity of the cart.
Newton, There can be a mass is four.080, So acceleration might be equal to 2.50 m in step with cent within the rectangular. Initial is that amount that relies upon total mass. The greater mass the more inertia. So Mass is 2000 kg and acceleration is 3 ms square. So this offers us an internet pressure identical to 6000 newtons or 6.0 and 210 to the power
In case you roll a ball, it initially will keep rolling except friction or something else stops it by means of pressure. you could also think about the way that your body maintains transferring ahead when you hit the brake on your bike. Translational Inertia = ma, in which m is the mass, and a is the acceleration of the object. Calculate the rotational inertia or the instant of inertia velocity by way of multiplying the mass of the object with a square of the gap between the item and the axis, the radius of rotation.
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A certain net force acting on a 5kg mass produces an acceleration of 2 m/s2 calculate the force
Answer:
10 N
Explanation:
Newton's Second Law equation: Fnet = ma
Assuming no frictional force, plug in the values to get your answer!
Fnet = 5kg x 2m/s^2 = 10 N
the pitcher threw a 70 mph curve ball and then a 100 mph fastball, which law of motion is it most closely connected to?
The pitching of a 70 mph curveball and a 100 mph fastball can be most closely connected to Newton's Laws of Motion, specifically the first law, which is also known as the law of inertia.
What is Newton's First Law of Motion?According to Newton's first law, an object at rest will stay at rest, and an object in motion will continue in motion with the same velocity and in the same direction unless acted upon by an unbalanced force. In the case of the pitcher throwing the curve ball and fastball, the ball initially starts at rest in the pitcher's hand, and the pitcher then applies a force to the ball, accelerating it to the desired velocity. Once the ball is in motion, it will continue to move at a constant velocity unless acted upon by external forces, such as gravity or air resistance.
The curveball and fastball also demonstrate the third law of motion, which states that for every action, there is an equal and opposite reaction. When the pitcher throws the ball, the force he applies to the ball generates an equal and opposite force on the pitcher's arm. This reaction force is what propels the ball forward and enables it to travel at high speeds.
Therefore, the pitching of a 70 mph curveball and a 100 mph fastball can be most closely connected to Newton's Laws of Motion, specifically the First and Third laws.
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Which phrase describes a surface wave?
O a type of electromagnetic wave
O a wave that travels through space
O a wave that moves along the interface of two different materials, like air and water
Answer:
a wave that moves along the interface of two different materials, like air and water
Explanation:
Robert a stunt man projects himself from a height of 50 m in a horizontal direction he safely lands at a horizontal distance of 100 m calculate the horizontal velocity with which Robert projected himself
The horizontal velocity with which Robert projected himself is v = 31.35m/s.
Equation :Given,
Y = 50m
X = 100m
So, the position function is
Y = -(9.8/2)t²+ 50 = 0
t = 3.19s
Now use speed distance relationship
X = vt
So,
v = X / t
v = 100 / 3.19
v = 31.35m/s
What is the perfect definition of velocity?A vector measurement of the rate and direction of motion is what is meant by the term "velocity." Simply put, velocity is the rate of movement in a single direction. Velocity can be used to gauge both the speed of a rocket launching into space and the speed of a car traveling north on a busy freeway. Velocity is the rate and direction of an object's movement, whereas speed is the time rate at which an object is moving along a path.
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Relate what is produced during a
supernova to our lives
Answer:
wow
Explanation:
Answer: iron
Explanation: yw
As you move along the x axis, what changes?
A. The number of sprouted bean seeds increases.
B. The temperature increases.
C. Both A and B.
D. None of the above.
Answer:
Because the temperature Would Most likey increase And same with the Beans! :D <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3
Explanation:
Im pretty sure the answer is A and B
Question 1
Describe the motion of an object that is being affected by the four (4)
components of forces on a solid surface, in water and in air.
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12pt v Paragraph
30 pts
BIUA 2
2
T² :
|
When I started exercising consistently in my late 30s, I experienced firsthand the profound effects exercise has on both the body and the brain. Honestly, these realizations completely changed my inspiration to go to a recovery center.
It started when a powerboat tripped in Peru's mighty Cotahuasi Channel in one of the deepest valleys on earth. On this voyage, I found that although I was healthy, I was not as healthy as my relatives in the channel rafters.
There was a 16-year-old on a school trip who had more endurance than me, and a 60-year-old who had more endurance than me. I realized I had to take care of business. you are balanced These forces cancel each other out and the motion of the bodies they act on remains unchanged.
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Force has four components: its magnitude, its direction, point of application, and course of action.
A force acting on an item causes it to change shape or size, to move, to stop moving, to accelerate or decelerate. When two things come in contact, they exert a force on each other that is equal in size but opposing in direction.
Magnitude: The magnitude of the applied force is proportional to the object's mass and displacement. The greater the mass of the body, the greater the magnitude of the force used to push or pull it. The standard unit for force magnitude is named after Isaac Newton. As a result, the SI unit is N, newton.Direction: The force is acting in the same direction as the item. When the interaction ends, the force is no longer felt by the two objects. The force is directed perpendicular to the motion of the object. Forces arise exclusively as a result of contact.Point of application: The point of application is a weighted average position determined by the amount of force exerted. If the force were uniform, that would be the center. Because it isn't, and it's stronger closer to the long wire, the point will be shifted somewhat to the left of the center.Line of action: A force's path of action F denotes the geometric depiction of how force is exerted. It is the line that passes through the location where force is applied in the same direction as the vector F.Learn more about Force here:
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+
he document will
3. Calculate the speed for line B.
15
10
Distance (m)
5
A
N
6
a. -2.14 m/s
b. 3 m/s
c. 2.14 m/s
d. 4 m/s
B
€
D
8
Time (s)
E
10 12 14 16
Answer:
d: 4m/s
Explanation:
speed=d/t
S=2-10/8-10
S=4
(a) What must the charge (sign and magnitude) of a 1.45-g particle be for it to
remain stationary when placed in a downward-directed electric field of magnitude 650
N/C?
(b) What is the magnitude of an electric field in which the electric force on a proton is
equal in magnitude to its weight?
The charge is obtained as 2.19 * 10^-5 C the electric field is obtained as 1 * 10^-7 N/C.
What is the charge?We know that the electric field is the created as a result of the presence of one charge close to another. The magnitude of the electric charge that would make the particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 650 N/C is required here.
a) Recall that the eight is also a force and counterbalanced the electric force hence;
W = mg = Eq
mg = Eq
g = 9.8 m/s^2
1.45 * 10^-3 Kg * 9.8 m/s^2 = 650 N/C * q
q = 1.45 * 10^-3 Kg * 9.8 m/s^2/650 N/C
q = 2.19 * 10^-5 C
b) The charge on the proton is 1.6 * 10^-19 while the mass of the proton is 1.67 * 10^-27 Kg
F= 1.67 * 10^-27 Kg * 9.8 m/s^2 = 1.6 * 10^-26 N
The electric field is obtained from; 1.6 * 10^-26 N/1.6 * 10^-19
= 1 * 10^-7 N/C
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explain newtons law of motion applied in this game
Newton’s first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
Newton’s second law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
Newton’s third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. This law is important in analyzing problems of static equilibrium, where all forces are balanced, but it also applies to bodies in uniform or accelerated motion.
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The first law represented in the game would be the candy. If you blow it, it would move but then stop due to friction.
The second law would be represented by blowing the candy. Since the candy was light, it would be easier to blow but if it was heavier, it would be a lot harder.
The final law represented in the game would be if you decided to blow the candy with a ballon instead, the candy would move the opposite direction the ballon is moving.
Hooke's Law Quick Check
6 of 66 of 6 Items
Question
Suppose a 100-gram mass, when attached to a spring, causes the spring to stretch 8 cm.
What would you expect a 25-gram mass to do when attached to the same spring?
(1 point)
Responses
Stretch the spring 4 cm.
Stretch the spring 4 cm.
Stretch the spring 32 cm.
Stretch the spring 32 cm.
Stretch the spring 8 cm.
Stretch the spring 8 cm.
Stretch the spring 2 cm.
(1 point)
When a 25 g mass is attached to the same spring, the spring is stretched by 2 cm.
What is Hook's law?According to the question, when a spring is stretched or compressed, the restoring force generated in the spring (towards its mean position) is directly proportional to the length to which it is stretched or compressed.
Mathematically - F = - Kx
Given is a situation in which a stretch of 8 cm is caused by a 100g mass.
From this, we can write -
Mass [m] = 100 g = 0.1 Kg
Displacement [x] = 8 cm = 0.08 m
According to the question -
We will first find the spring constant [K]. Using Hook's law -
F = -Kx
mg = -Kx
K = - mg/x
K = - (0.1 x 9.8) / 0.08
K = - 12.25 N/m
|K| = 12.25 N/m
Now, when mass [M] = 25g = 0.025 Kg, using Hook's law -
|F| = |- kx| = kx
Mg = 12.25x
x = Mg/12.25
x = (0.025 x 9.8)/12.25
x = 0.02
x = 2 cm
Therefore, when a 25 g mass is attached to the same spring, the spring is stretched by 2 cm.
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slope of distance time graph will always be ?
Answer:
equal to the speed of the object.
A car travels with an average speed of 58 mph what is this speed in km/h
The average speed in km/h will be 93.342 km/hr for 58 mph.
What is the average speed?Speed is defined as the ratio of distance and time, and average speed is defined as the overall distance the object covers in a given amount of time is its average speed. The scalar quantity represents the average speed. It does not have direction; it is represented by magnitude.
Average Speed=[tex]\frac{total distance}{total time}[/tex]
According to the question, the speed is given i.e., 58mph
1 mph=1.61 km/hr
⇒58 mph= 1.61×58
⇒93.342 km/hr
Hence, the speed in km/hr will be 93.342 km/hr for 58 mph.
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The speed of light is 300,000 km/sec. What is the frequency in Hz if the wavelength is λ=0.70 X 10^-6 m?
The frequency in Hz if the wavelength is 0.70 X 10-⁶ m is 4.3 × 10¹⁴ Hz.
How to calculate frequency?The frequency of a wave can be calculated by dividing the velocity of the wave by the wavelength as follows:
f = v/λ
Where;
f = frequency (Hz)v = velocity (m/s)λ = wavelength (m)According to this question, the wavelength of a wave is given as 0.70 X 10-⁶ m. The speed of light is 3.00 × 10⁸ m/s. The frequency can be calculated as follows:
f = 3 × 10⁸m/s ÷ 7 × 10-⁷m
f = 4.3 × 10¹⁴ Hz
Therefore, the frequency in Hz if the wavelength is 0.70 X 10-⁶ m is 4.3 × 10¹⁴ Hz.
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Relate Bernoulli's principle to the sport of your choice.
Answer:
Daniel Bernoulli – a Swiss physicist and mathematician – discovered that for an inviscid flow of a non-conducting fluid, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid’s potential energy. * This is known as the Bernoulli Principle.The Bernoulli principle can also be used to describe a downward lift force, such as that required by speed skiers, cyclists and racing cars. The car, bike and skis need to be pushed down into the ground so a greater frictional force is created
Explanation:
Hope this helps ♡
A bird glides for 24 minutes and covers 2.6 kilometers. What was its average speed?
Answer:
6.5 km/ h
Explanation:
24 minutes = 24/60 = 0.4 hours
v = 2.6 / 0.4 = 6.5 km/h
Hope this helps
A 10,000-Ω resistor has a tolerance of 5%. What is the maximum values of this resistor?
The maximum value of the resistance is 105,000 Ω
What is the maximum value of the resistance?
We are given the following properties of the resistor as;
Resistance = 10,000-Ω
Tolerance = 5%
Now, when we say a tolerance of 5%, it means the value of the resistance can only reduce or increase by a maximum of 5%.
Thus;
For a decrease of 5%, we would get the minimum value of the resistance which is;
Minimum value = (100% - 5%) * 10000
Minimum value = 95000 Ω
Then the maximum value of the resistance is;
Maximum Value = (100% + 5%) * 10000
Maximum Value = 105,000 Ω
Thus, the maximum value of the resistance is 105,000 Ω
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4. Summarize the patterns of sensory and perceptual development in infancy.
The physical stimulation of the sense organs is known as sensation. The act of mentally classifying, interpreting, analyzing, and integrating stimuli from the senses and the brain is known as perception.
The sensory world of a baby is not as stable and clear as our own as adults. The infant's capacity for the environment's sensory and perceptual development happens day by day.Babies begin to group sounds into intricate patterns. From the moment of birth and even before, infants hear. Infants start to show a sense of musical phrasing between 4 and 7 months.Infants are able to differentiate almost all of the sounds used in human languages, and they prefer listening to human speech to other sounds.Humans rely on vision more than any other sense when it comes to investigating their environment.Even very young infants have a highly developed sense of smell, and some 12- to 18-day-old babies can recognize their mothers just by smell.Therefore, sensory and perceptual development is very necessary in infants.
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Objects motion plus blank forces equal blank velocity
Answer:\
unbalances and slow direction is the answer
Explanation:
Answer:
no change in motion
Explanation:
20 pts
A physics teacher has just demonstrated how a certain component in a circuit can cause the electrical current to decrease over time. Which of the following values shows this measurement in the correct SI base units?
amperes per second
candelas per second
moles per minute
amperes per hour
In the SI unit, the quantity could be measured in amperes per second.
What is the resistance?The resistor refers to the opposition that is offered to the flow of current. This opposition to the flow of current is offered by a circuit component that is called the resistor. Technically, any of the circuit components except the cell is able to offer this kind of opposition to the flow of current.
Recall that Ohm's law states that the voltage is directly proportional to the current in the circuit. The constant of proportionality here is the resistor. We can now write;
V = IR
V = voltage
I = current
R = resistance
Note that the SI system is the system that details the correct unit for quantities that is internationally accepted globally. Now from the SI units base, we can see that the resistance could be measured in Amperes per second. This unit is commonly called the ohm.
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Given the information in the velocity vs. time graph, what is the displacement of the object after 1 second?
_____ m
After 3 seconds?
_____ m
After 5 seconds?
_____ m
Thank you!!!
The displacement of the object after 1 second, is 3 m.
The displacement of the object after 3 seconds, is 9 m.
The displacement of the object after 5 seconds, is 15 m.
What is displacement?The displacement of an object is the change in the position of the object.
displacement of the object after 1 secondThe displacement of the object after 1 second, x = 3 m/s x 1 second = 3 m
displacement of the object after 3 secondThe displacement of the object after 1 second, x = 3 m/s x 3 s = 9 m
displacement of the object after 5 secondThe displacement of the object after 1 second, x = 3 m/s x 5 s = 15 m
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A patient is weighted by a scale on a deep-sloped floor part. The reading is the component of weight perpendicular to the slop. The reading is ___ the true weight.
A- more than
B- half of
C- less than
D- the same as
Answer:
Measuring a patient's body weight can be done to Assess and monitor fluid and nutrition status as part of a nutrition screening tool. Calculate drug doses. Calculate nutrition and fluid support if required. Monitor the effectiveness of nutritional support.
Explanation:
Which graph below represents how the velocity of the sphere changes over time when falling with constant acceleration?
Justify your choice.
Graph B represents the velocity of the sphere changes over time when falling with constant acceleration.
Acceleration is the measure of how quickly a body's velocity varies with regard to time, and constant acceleration occurs when a body's velocity changes proportionately over a period of time, or at a constant rate. It measures in m/s2.It is claimed that a body has continual positive acceleration when it begins to move with an initial velocity of zero and gradually increases to a positive value over time.Constant positive acceleration is demonstrated by a ball falling freely in a vertical direction.To know more about constant acceleration. visit : https://brainly.com/question/9754169
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The plates of a parallel-plate capacitor have a separation of 3.34
mm, and each has an area of 10.0 cm². Each plate carries a
charge of magnitude 6.70x10-8 C. The plates are in vacuum.
You may want to review (Page).
For related problemsolving tips and strategies, you may want to
view a Video Tutor Solution of Properties of a parallel-plate
capacitor.
The potential in the parallel-plate capacitor which has a separation of 3.34mm, and each has an area of 10.0 cm² has a potential of 2.52 giga .
What is capacitance?Capacitance of a capacitor is a physical property that refers to the ratio of charge store in the parallel plate capacitor to its potential.
What is permittivity constant?Vacuum permittivity, commonly denoted ε₀, is the value of the absolute dielectric permittivity of classical vacuum. It may also be referred to as the permittivity of free space, the electric constant, or the distributed capacitance of the vacuum.
Given:
Charge in the parallel plate capacitor = 670 micro coulomb
Area of the parallel plate capacitor = 10 cm square
Area of separation between plate = 3.34 mm
First we will find the the capacitor in the parallel plate capacitor using its formula.
Capacitance = 2.65 Pico meter
Using the defination of capacitance we have,
Potential of the parallel plate capacitor = capacitance × charge
Potential of the parallel plate capacitor = 670/2.65
Potential of the parallel plate capacitor = 2.52 giga
Therefore, The potential in the parallel-plate capacitor which has a separation of 3.34mm, and each has an area of 10.0 cm² has a potential of 2.52 giga .
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A laptop battery has an emf of 11.4 V. The laptop uses 0.60 A while running. By how much does the electric potential energy of this charge increase as it moves through the battery? I know the charge per second is 0.60 C.
The electric potential energy of this charge increase as it moves through the battery is 6.84 J.
What is electric potential energy?The power required to move a charge in opposition to an electric field is known as electric potential energy. A charge must be moved through a stronger electric field with more energy, but it also must be moved through a weaker electric field with more energy. The energy gained when an object moves against an electric field is known as the electric potential energy. The electric potential is calculated for any charge by dividing the potential energy by the charge.
Emf of the battery = 11.4 V
Current used = 0.60 A
Current = Charge / Time
The charge per second is 0.60 C. Therefore, the electric potential energy will be:
U = qv
U = Current used × Emf
U = 0.60 × 11.4
U = 6.84 J
Therefore, the electric potential energy of this charge increase as it moves through the battery is 6.84 J.
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