Ashley will have 86.909 pounds to spend on the trip in London.
1 British pound = 1.43 American dollars
This shows the conversion of British pound into American dollars.
1 American dollar = [tex]\frac{1}{1.43}[/tex] British pound
1 American dollar = 0.6993 British pound
Ashley has $130.00
The amount of money she will have in British Pound can be calculated as:
= $130.00 * 0.6993
= 90.909 British Pound
Fee charged by the bank to convert the currency from American dollars to British pounds = 4 British pounds
Remaining amount after paying bank's fee = 90.909 - 4
= 86.909 British pounds
Therefore Ashley will have 86.909 British pounds after she changes all of her dollars to pounds.
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A cheetah can go from a state of resting to running at 20 m/s in just 2 seconds. what is the cheetah’s average acceleration? responses 0.1 m/s2 0.1 m/s 2 10 m/s2 10 m/s 2 0.1 m/s 0.1 m/s 10 m/s
The cheetah that can go from a state of resting to running at 20 m/s in just 2 seconds has an average acceleration of: 10 m/s²
The formulas for uniformly varied rectilinear motion (UVRM) and procedures we will use to solve this exercise are:
a = (vf - vi) /t
Where:
vf = final velocityvi = initial velocitya = accelerationt= timeInformation about the problem:
vi = 0 m/svf= 20 m/st = 2 sa = ?Applying the acceleration formula we have:
a = (vf - vi) /t
a = (20 m/s - 0 m/s) /2 s
a = (20 m/s) /2 s
a = 10 m/s²
What is acceleration?It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2
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a wooden block floats a liquid with 1/4 of it's volume above the liquid.find the density of the liquid given that the density of the wood is 900 gm–³
675g/cm³ is the density of the liquid
Here we have given that
density of wood be ρ.
the volume of the block be V
The volume of the block =1/4 v
The volume of the immersed block (v) =V-1/4V=3/4V
We know the weight of the block = the weight of the water displaced by the submerged part of the block.
i.e. V x ρ x g
= 3/4 x900g/cm³
= 675g/cm³
Density is a measure of mass divided by the volume of an object. Defined as mass per unit volume. here from the above equation we have substituted the given value and we got the answer as 675g/cm³
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. Removing thermal energy from liquid water can cause it to change to what state?
Answer: solid state
Explanation:
The change from the liquid state to the solid state is called freezing. As the liquid cools, it loses thermal energy. As a result, its particles slow down and come closer together. Attractive forces begin to trap particles, and the crystals of a solid begin to form.
give the instantaneous velocity (including unit vector) of the object at t=1.5s
Since an object's instantaneous velocity equals the derivative of its displacement at a certain point, we can also state that the instantaneous velocity at time t = 1 is around 2 meters per second.
The derivative of x with respect to t, or the upper limit of the average velocity as the elapsed time approaches 0, is the instantaneous velocity of an object:
v (t) equals d d t x (t). v (t) equals d d t x (t).
Instantaneous velocity is a vector having a dimension of length per time, similar to average velocity. The speed of an object at a specific time is its instantaneous speed. The instantaneous velocity is obtained by adding the direction to the speed.
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According to history, the concept that all matter is composed of atoms was first proposed by.
Answer:
John Dalton
Explanation:
Answer:
chemist John Dalton
Explanation:
:)
In the ____ letter style, the date, complimentary close, and signature block are positioned approximately one-half inch to the right of center or at the right margin.
In the Modified Block letter style, the date, complimentary close, and signature block are positioned approximately one-half inch to the right of center or at the right margin.
Following the proper format while writing business letters is crucial. There are specific methods that business letters have to be written.
The modified block letter style, which places one space between the body of the letter and the addresses of the sender and recipient, is one of the several letter kinds. In this form of letter, one space corresponds to around half an inch to the right of centre or at the right margin. Modified block letter formats are largely the same as full-block business letters.
Modified block format is a different extensively used format. The letter body, along with the sender and recipient's addresses, are left justified and single-spaced in this format. On the other hand, tab to the centre and start typing for the date and closure. Semi-Block. Semi-block is the last and least popular type of style.
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a sinusoidal wave travels along a lightweight string with wavelength 1 and frequency f1. it reaches a heavier string, with a slower wave speed, and continues on with wavelength 2 and frequency f2. which is true?
The true statement for sinusoidal wave travelling along a light weight string =
lambda₂< lambda₁ and f₂ = f₁
λ₂ ≤ λ₂
Sinusoidal wave :
The sine or sinusoidal wave may be a curve that describes a smooth repetitive oscillation. we will define the sine wave as “The wave form in which the amplitude is always proportional to sine of its displacement angle at every point of time”. All waves are often made by adding up sine waves
Why is it called sinusoidal wave?Then the waveform shape produced by our simple single loop generator is usually referred to as a Sine Wave as it is said to be sinusoidal in its shape. this sort of waveform is called a sine wave because it is based on the trigonometric sine function used in mathematics.
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An airplane was flying from Cincinnati to Denver. The velocity of an airplane was measured shortly after take off at 10km/min. The velocity was measured again midflight (at its fastest) 18km/min. 90 min passed between the 2 velocity measurements. What is the acceleration of the airplane?
720 km/min2
0.3 km/min2
2 km/min2
0.9 km/min2
The acceleration of an airplane that had an initial velocity of 10km/min and a final velocity of 18km/min covered over 90min is 0.09km/min².
How to calculate acceleration?The acceleration of a moving substance can be calculated by dividing the change in velocity by the time taken as follows:
a = (v - u)/t
Where;
a = accelerationv = final velocity (km/min)u = initial velocity (km/min)t = time (minutes)According to this question, an airplane was flying from Cincinnati to Denver. The velocity of an airplane was measured shortly after take off at 10km/min. The velocity was measured again mid-flight to be 18km/min.
a = (18km/min - 10km/min)/90min
a = 8km/min ÷ 90min
a = 0.09km/min²
Therefore, acceleration of an airplane that had an initial velocity of 10km/min and a final velocity of 18km/min covered over 90min is 0.09km/min².
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choose the correct realistic problem for which this is the correct equation. choose the correct realistic problem for which this is the correct equation. at what distance along the axis of a charged disk is the electric field strength double its value at the center of the disk? give your answer in terms of the disk's radius r . at what distance along the axis of a charged disk is the electric field strength half its value at the center of the disk? give your answer in terms of the disk's radius r . at what distance along the axis of a charged square is the electric field strength double its value at the center of the square? give your answer in terms of the square's side r . at what distance along the axis of a charged square is the electric field strength half its value at the center of the square? give your answer in terms of the square's side r .
The correct realistic problem for the given equation is problem 1 in which the electric field strength of the disc is half its value at the center of the disk.
We know that,
Electric field of a charged disc at a distance along its axis is given by,
E = σ / 2 ε ( 1 - x / √ ( [tex]x^{2}[/tex] + [tex]r^{2}[/tex] ) )
Electric field at the centre of a charged disc is given by,
[tex]E_{c}[/tex] = σ / 2 ε ( Since at centre, x = 0 )
Distance along the axis of a charged disk, where electric field strength's value is half its value at the center of the disk.
[tex]E_{x}[/tex] = [tex]E_{c}[/tex] / 2
σ / 2 ε ( 1 - x / √ ( [tex]x^{2}[/tex] + [tex]r^{2}[/tex] ) ) = ( σ / 2 ε ) / 2
x / √ ( [tex]x^{2}[/tex] + [tex]r^{2}[/tex] ) = 1 / 2
4 [tex]x^{2}[/tex] = [tex]x^{2}[/tex] + [tex]r^{2}[/tex]
3 [tex]x^{2}[/tex] = [tex]r^{2}[/tex]
x = r / √ 3 ,which is the correct distance, when magnitude is half its value from centre.
Electric field is a field that surrounds electrically charged particles that exerts force on other charged particles in the field.
Therefore, the given equation is suitable for Electric field of a charged disc at a distance along its axis where electric field strength's value is half its value at the center of the disk.
The given question is incomplete. The completed question is
You are given the following equation to solve a problem:
σ / 2 ε ( 1 - x / √ ( [tex]x^{2}[/tex] + [tex]r^{2}[/tex] ) ) = [tex]E_{c}[/tex] = σ / 2 ε
Choose the most realistic problem for which this could be the correct equation.
1 ) At what distance along the axis of a charged disk is the electric field strength half its value at the center of the disk? Give your answer in terms of the disk's radius R.
2 ) At what distance along the axis of a charged disk is the electric field strength double its value at the center of the disk? Give your answer in terms of the disk's radius R.
3 ) At what distance along the axis of a charged square is the electric field strength double its value at the center of the square? Give your answer in terms of the square's side R.
4 ) At what distance along the axis of a charged square is the electric field strength half its value at the center of the square? Give your answer in terms of the square's side R.
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what minimum heat is needed to bring 50 g of water at 50 ∘c to the boiling point and completely boil it away? the specific heat of water is 4190 j/(kg⋅k) and its heat of vaporization is 22.6 × 10 5 j/kg .
The minimum heat required is 129.7KJ.
How to find the minimum heat?Given
Mass of water (m) = 50g
Initial temperature [tex]T_{i}[/tex] = 20°C
Final temperature [tex]T_{f}[/tex] = 100°C
Specific heat of water =4190 J/kg-k
The heat of vaporization (L) = 22.6 × 10 5 j/kg .
The heat required = Heat required to raise water temperature from 20 to 100 + Heat to vapourize water thoroughly.
Q=mc([tex]T_{f} - T_{i}[/tex]) + mL
Q=0.05 * 4190 (100-20) + 0.05 * 22.6 × [tex]10^{5}[/tex]
Q=(0.16760 + 1.13)× [tex]10^{5}[/tex]
Q=1.2976 × [tex]10^{5}[/tex]
= 129.7KJ
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An object undergoes simple harmonic motion with time period of 2s and amplitude 0.5m. at time t=0 the displacement if the object is a maximum. what is the displacement of the object from the equilibrium position at t=1.5s?
When t is 1.5 seconds displacement of the object is 0.41 m.
Displacement of an object is defined as the shortest path covered by an object. It can be represented in the units centimeters and meters.
The object's time of simple harmonic motion is T.
T = 2 seconds
The object's amplitude simple harmonic motion is a.
a = 0.5 m
Displacement of the object is maximum when t = 0.
The displacement of the object is y.
When t is 1.5 seconds displacement of the object is,
[tex]y = a \: sin( \frac{2\pi}{T} )t[/tex]
[tex]y = 0.5\: sin( \frac{2\pi}{2} ) \times 1.5[/tex]
[tex]y = a \: sin( \pi \: 1.5)[/tex]
y = 0.41 m
Therefore, when t is 1.5 seconds displacement of the object is 0.41 m.
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A student drops a ball from the top of a 24 m tall building. Ignoring air resistance, how long did it take for the ball to hit the ground?
Answer:
1.11111 century mother duck
What is the number of oxygen atom(s) on which the negative charge will resonate following relevant resonance structures?
Two oxygen atoms would share the negative charge.
What are resonance structures?There are some compounds in which a single structure is insufficient to explain the properties of the compound. In that case, we have to involve a number of other structures which contributes to the overall structure of the molecule to different extents.
The arrows are used to show the transformation of the structures of the compounds. Looking at the structures as it has been shown here, we know that the oxygen atoms that would be involved in the resonance are the oxygen atoms that are in the conjugated system.
There are two oxygen atoms in the conjugated system hence they will share the negative charge.
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2. the microscope is an instrument of measurement. measure the size of an object that fills ½ of the field of view under high power, 400x. show your math.
The size of the object is 200 micrometers.
Size of the object = (Diameter of the field of view) / Fit number
Field of view of high power magnification 400X = 0.40mm
Fit number = 2 (object fills ½ of the field of view )
Size of the object = 0.40 / 2 = 0.2mm = 200 micrometer.
Work is completed at a rate determined by power. The Watt is the common metric unit of power. A unit of power is adequate for one unit of work divided by one unit of time, as suggested by the facility equation. As a result, one Watt is adequate for one Joule/second. The term "horsepower" is occasionally wont to describe a machine's output of power for historical reasons. The equivalence of horsepower is roughly 750 Watts. a person is a machine, a bit like a machine with a power rating. Some people possess greater strength than others. In other words, some people have the power to accomplish the same amount of work in the same amount of time or in less time.
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100 POINTS Consider a balloon of mass 0.030kg being inflated with a gas of density 0.54kg/m. What will be the volume of the balloon when it just begins to rise in the air of density 1.29kg/m3. (g=10m/s2) Detailed Explanation Please
Answer: Volume=0.030/0.75
Explanation:
Density= mass/volume ∆density= mass/volume
(1.29- 0.54)= 0.030/volume
0.75 volume= 0.030 Volume=0.030/0.75
Why does 10 gram bigger cooper than 10 gold
Answer: A gram of gold is worth about $25, so 2 grams or better would be viewed as high-grade for bulk tonnage mining.
Explanation:
i looked it up.
8. A rock is dropped from a cliff and takes 6 seconds to hit the ground. At what time is the
acceleration of the rock the greatest?
Answer:
A hiker drops a heavy stone over a cliff and hear it strike the cliff base 2.8seconds after dropping it.
you are a scientist studying the behavior of fish. you decide to conduct a thermodynamic analysis of the fish to determine their efficiency at gaining weight. if you define the fish as your system, would it be an open, closed, or isolated system? or does the type of system depend on some other facto
If the fish is considered as the system, it is an open system
All living things are an open system, since there is a constant exchange of energy and matter with the environment. In this case the fish moves and breathes which will result in a work on the environment.
Thermodynamic analysis is used to study the nature's most diversified energy change. Some of the methods of Thermodynamic analysis are pinch analysis, exergy analysis, second law analysis, and equipartition principles.
Therefore, if the fish is considered as the system, it is an open system
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A researcher tests acceleration due to gravity by dropping a pebble in an evacuated tube. after 0.5 seconds the pebble falls 1.226 meters. What is the acceleration due to gravity measured by the researcher? SHOW WORK
Answer:
See below
Explanation:
d = 1/2 a t^2
1.226 = 1/2 a (.5)^2
a = 1.226/(1/2 * .5^2)
a = 9.808 m/s^2
A researcher tests acceleration due to gravity then the acceleration due to gravity measured by the researcher is 9.808 m/s².
What is acceleration?In mechanics, acceleration refers to the speed at which an object's velocity varies over time. how many accelerations each vector has. An object's acceleration is determined by the direction of the net force exerted on it.
Due to the fact that it has both a magnitude and a direction, acceleration is a vector quantity. Velocity is a different vector property.
According to the question,
Time, t = 0.5 seconds
Distance, s = 1.226 meters
s = 1/2 a t²
1.226 = 1/2 a (0.5)²
a = 1.226 / (1/2 *0.5²)
a = 9.808 m/s²
So, the acceleration due to gravity is 9.808 m/s².
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An automobile is traveling on a long straight highway at a steady 33.5 m/s when the driver sees a wreck 150m ahead on the side of the road. At that instant, she applies the brakes (ignore reaction time). Between her and the wreck are two different surfaces. First there is 100m of ice, where her deceleration is only 1m/s^2. From then on she is on dry concrete, where her deceleration is a more normal 7m/s^2.
a) What was her speed just after leaving the icy portion of the road?
b) How much total distance does it take her to stop?
c) What is the total time it took her to stop?
I just need b and c!! The answers are given but I can't figure out how to get to them.
Answers given by the WS -
B - 165.9m
C - 7.4s
a) her speed is 26.43m/s
b) Total distance traveled = 100 + 49.89
= 149.89m
c) Total time is 10.846 seconds
What is acceleration?acceleration is the rate of change of the velocity of an object with respect to time.
From the question,
a) The car’s speed just after leaving the icy portion of the road is the first part
We have s = ut + 1/2at²
Here s = 100m, a = 1, u = 33.5 m/s
100 = 0* t + 1/2 * (-1) * t²
t = 7.07 seconds
After 7.07 seconds cars speed is given by v =u +at
u = 33.5m/s, a = -1
velocity = 33.5 + (-1) * 7.07 = 26.43m/s
So velocity of car on leaving icy surface = 26.43m/s
b) Time taken after icy surface
0 = 26. 43 - 7 * t
t = 3.776 seconds
Distance traveled during this time
v² = u² + 2as
0 = (26.43)² + 2 * (-7) * S
s = 49.89 m
Total distance traveled = 100 + 49.89
= 149.89m
c) Total time taken = 3.776 + 7.07
Total time is 10.846 seconds
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013 10.0 points
Given: The battleship and enemy ships A
and B lie along a straight line. Neglect air
friction.
A battleship simultaneously fires two shells
with the same initial velocity at these two
enemy ships.
battleship
If the shells follow the parabolic trajectories
shown in the figure, which ship gets hit first?
1. both at the same time
2, need more information
3. A
4. B
Ship A with a greater angle of projection will hit the target first.
What is time of flight?
The time of flight is the time a projectile takes to reach maximum height and return to the plane of projection. The time of flight is just double the maximum-height time.
Mathematically, time of flight is given as;
T = (2usinθ)/g
where;
u is the initial velocity of projectionθ is angle of projectionThe time of flight depends on initial velocity of the object and angle of projection.
When the initial velocity of both ships is the same and angle of projection varies, the difference in the time of flight will depend greatly on the angle of projection.
Thus, ship A with a greater angle of projection will hit the target first.
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According to the graph, the velocity is approximately..?
As we know velocity is the rate of change of position with respect to time.
Mathematically [tex]Velocity = \frac{Position}{Time}[/tex]
Also, in a position-time graph, the velocity of a moving object can be represented by the slope of the graph i.e. Tan[tex]\alpha[/tex].
[tex]\alpha[/tex] is the angle made by the slope by the horizontal X-axis.
Distance travelled by the object is recorded on the Y-axis and time taken to complete that particular distance is noted on X-axis.
[tex]Tan\alpha = \frac{Position}{Time}[/tex]
[tex]Tan\alpha = Velocity = \frac{x}{t}[/tex]
According to the graph
for x = 8m, t = 2s
[tex]Tan \alpha = \frac{8}{2}[/tex] = 4 m/s
for x = 12m, t = 3s
[tex]Tan\alpha = \frac{12}{3}[/tex] = 4 m/s
Therefore for every change in distance, the time changes linearly which gives constant velocity as 4m/s.
Option (d) 4 m/s
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Which word describes something that can cause harm? A hazard, A risk, A warning or A precaution
Answer:
Hazard
Explanation:
A hazard is a source or a situation with the potential for harm in terms of human injury or ill-health, damage to property, damage to the environment, or a combination of these.
6. A rock is dropped from a cliff and takes 6 seconds to hit the ground. At what time is the
speed of the rock the highest?
Answer:
Acceleration due to gravity = g = 9.8 m/s²
Time to reach ground = t = 6 sec
Initial Velocity of the Rock = Vi = 0 m/s (Because, the rock will be at rest, initially)
Hope this answer helps you out!
PLEASE HELP Describe the difference between a simple machine and a complex machine. Give an example of each.
Answer:
SImple machine:A machine with few or no moving parts that is used to make work easier.
Example: Wedge, inclined plane, screw, etc.
Complex machine: A machine that is a combination of two or more simple machines.
Example: Car, refrigerator, sewing machine, etc.
Explanation:
Answer:
a simple machine is a machine with few or no moving parts that is used to make work easier, such as a wedge or screw. a complex machine is a combination of two or more simple machines, such as a car, sewing machine or refrigerator.
Explanation:
A Man's mass on earth is 45kg. What is his mass and weight on space
The correct answer is 441 N.
The force that pulls objects toward the centre of the Earth is known as earth gravity. The acceleration of all the bodies that are affected by gravity is almost equal to the strength of the gravitational field.
The force exerted on an object by gravity is known as the weight of a body.
As a result, we can state that weight is only a force.
Given that the mass of a person on earth is = 45 kg
and that gravity's acceleration on earth is = 9.8 ms^2.
Weight, then, is defined as mass multiplied by the gravitational acceleration, or W = m × g.
W = 45 × 9.8
W = 441 N
Hence, the total weight on Earth will be 441 Newton.
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Advantages and disadvantages of refracting telescope
Answer:
The refractor telescope has many advantages and disadvantages. One of the disadvantages is that the lenses are made of glasses therefore it has to be perfect with no air bubbles or scratches in the glass as this will impair the users viewing. Another disadvantage is that lense are weakest around the edges because they are thinnest there and that is the only place they are being supported by the telescope so this can lead to easy breakage. The lense can have colour distortion which means when white light goes through the lense it is split into colours. Since violet right is refracted more than red, the violet is brought to a focus clearer and this will make the image coloured and blurred, this is called chromatic aberration. Some advantages of refractor telescopes is that refractor telescopes are rugged meaning it is more resistant to misalignment than the reflector telescopes after their initial alignment. The glass surfaces don’t really need cleaning because it is sealed from the atmosphere this is efficient! The images are sharper, steadier and better than a reflector telescope because the tube is closed off from the outside and there will be no effects of changing temperatures or air currents. The focal length of a lense is proportional to the size of the image that is produced. Therefore if the focal length is longer the image will be larger. How bright an image will be also depends on how much light is collected by the telescope.
in a women's 100-m race, accelerating uniformly, laura takes 2.16 s and healan 3.22 s to attain their maximum speeds, which they each maintain for the rest of the race. they cross the finish line simultaneously, both setting a world record of 10.4 s.
The acceleration of Laura is 5.32 m/s² and that of Healen is 3.75 m/s².
What is velocity?Velocity is the directional speed of a moving item as an indication of its rate of change in position as seen from a specific frame of reference and measured by a specific time standard (e.g., 60 km/h northbound). The idea of velocity is crucial in kinematics, the part of classical mechanics that explains the motion of bodies.
A physical vector quantity called velocity requires both magnitude and direction to be defined. Speed is a coherent derived unit that expresses the scalar absolute value (magnitude) of velocity. Its quantity is expressed in SI units (metric system) of metres per second (m/s or ms1). For example, "5 meters per second" is a scalar while "5 meters per second east" is a vector.
Maximum speed of Laura is [tex]\Delta_{t1} = 2s[/tex]
Maximum speed of Healen is [tex]\Delta_{t2} = 3s[/tex]
Each runs at a constant acceleration for a given time interval, giving,
[tex]\Delta x_a = \frac{1}{2} a\Delta t^2[/tex]
This reaches final velocity
⇒ [tex]v = a\Delta t[/tex]
⇒ [tex]\Delta x_v = v(T - \Delta t)[/tex]
⇒ [tex]\Delta x_v =a\Delta t(T - \Delta t)[/tex]
Each sprinter's acceleration is calculated as follows:
Laura :-
⇒ [tex]\Delta t_1 = 2s[/tex]
⇒ [tex]a_1 = \frac{100m}{18.8s^2}[/tex]
⇒ [tex]a_1[/tex] = 5.32 m/s²
Healen :-
⇒ [tex]\Delta t_2 = 3s[/tex]
⇒ [tex]a_2 = \frac{100m}{26.7s^2}[/tex]
⇒ [tex]a_2[/tex] = 3.75 m/s²
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Full question
In a women's 100 m race, accelerating uniformly, Laura takes 2.00 s and Healan 3.00 s to attain their maximum speeds, which they each maintain for the rest of the race. They cross the finish line simultaneously, both setting a world record of 10.4 s.
A) What is the acceleration of each sprinter?
How is the electrostatic force (Felect) related to the separation distance (d) the two charges?
1- Keeping the magnitude of charge on both objects constant, conduct a systematic study to collect data relating separation distance to force. The separation distance is defined as the distance between the centers of the two objects; the best strategy involves centering the objects on a gridline and using distances that are a whole number of squares.
2- Draw a graph represent relationship between force and separation
Answer:The electrostatic force is directly related to the product of the charges and inversely related to the square of the separation distance.
Explanation:
Which of the following is NOT a correct variable assignment?
Group of answer choices
A. name = "Ada"
B. test = 98
C. “Ada” = x
D. name = “Ada” + “Ada”
this is Python btw
Answer:
Choice C
Explanation:
In any programming language, the variable cannot be in quotes.
Many languages regard a string as literal if it is surrounded by a single quote rather than a double quote. Any computer language prohibits putting quotations around a variable. Thus, option C is correct.
What are the variables in programming language?Only letters (including uppercase and lowercase characters), numbers, and underscore are permitted in variable names.
A variable's first letter must either be a letter or an underscore. There is no restriction on the length of a variable name or identifier.
Usually, an experiment contains independent, dependent, and controlled variables.
Therefore, A variable in programming is a value that can change based on external factors or data that has been supplied to the program.
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