Distance= Time×Speed
= 1800×1.5
= 2700 m
I am not sure it's right. the question itself is confusing.
the resistance of a wire the resistance of a wire of length 100 cm and a diameter of 0.3 mm is found to be 3.0 ohms calculate the resistivity and conduct conductivity
Answer:
The resistivity of this wire is approximately [tex]2.1\times 10^{-7}\; \rm \Omega \cdot m[/tex].
The conductivity of this wire is approximately [tex]4.7\times 10^6\; \rm (\Omega \cdot m)^{-1}[/tex].
Assumption: the perpendicular cross-section of this wire is circular.
Explanation:
Convert all unit to standard ones:
Length of this wire: [tex]l = 100\; \rm cm = 1.00\; \rm m[/tex].Diameter of this wire: [tex]0.3\; \rm mm = 3\times 10^{-4}\; \rm m[/tex].Assume that a wire has a resistivity of [tex]\rho[/tex], a length of [tex]l[/tex], and a cross-section area of [tex]A[/tex]. The formula for the resistance of this wire would be:
[tex]R = \displaystyle \frac{\rho \cdot l}{A}[/tex].
Rearrange this equation to find an expression for [tex]\rho[/tex], the resistivity of this wire:
[tex]\displaystyle \rho = \frac{R\cdot A}{l}[/tex].
For the wire in this question, both length [tex]l[/tex] and resistance [tex]R[/tex] are already given. However, the cross-section area [tex]A[/tex] of this wire needs to be calculated from its diameter, [tex]d[/tex]:
[tex]A = \displaystyle \pi\, \left(\frac{d}{2}\right)^2 \approx 7.08\times 10^{-8}\; \rm m^2[/tex].
Calculate the resistivity of this wire:
[tex]\displaystyle \rho = \frac{R\cdot A}{l} \approx \frac{3.0\; \Omega\times 7.08\times 10^{-8}\; \rm m^2}{1.00\; \rm m} \approx 2.1\times 10^{-7}\; \rm \Omega\cdot m[/tex].
The conductivity of a material is the reciprocal of its resistivity:
[tex]\displaystyle C = \frac{1}{\rho} \approx \frac{1}{2.1\times 10^{-7}\; \Omega\cdot m}\approx 4.7\times 10^{6}\; \rm (\Omega \cdot m)^{-1}[/tex].
Could you add two vectors and have the sum be smaller in magnitude than one of the vectors?
Also, why is it either yes or no?
Answer:
Let there be vectors A and B where B = -A
Then A + B = 0
>
Some people believe that "all you are" is determined by the types and amount of neurotransmitters that ooze
through your synaptic gaps and the electrical current in your brain.
>
• Do you think that all of your thoughts, hopes, dreams and aspirations are results of physiological processes: your
love, hate, anger and memories are only at the synaptic level? Why or why not?
• How would you explain this to someone who knows nothing about how the brain works?
Answer:
No, although the thoughts, hopes, dreams and aspirations entirely the results of physiological processes: Love, hate, anger and memories are not only at the synaptic level because some or part of human behavior and reaction are due to nature and nurture rather than totally dependent on the external stimuli or nurture
Explanation:
The physiological process can be described as a part of a system that plays a role on how the brain works and in inventory management, a part of a product are items that can be counted in inventory and can then be sold or used internally while a product is an item only meant to be sold.
Therefore, a product consist of all the integral parts required to complete a given function
A product such as what determines emotions, aspirations, thoughts, hopes and dreams has only one predetermined purpose or a process which it fits into even before if was sold or made, just like a bus bought to carry future employees of a company that is having a new site office.
While a part such as the fan belt can be changes and used on other vehicles without altering the journey of the bus.
A system is more than just its integral part as the system was desirable even before it was made while a part is made because of the system.
Plz solve this question..
Answer:
Explanation:
Voltage = 12 (the two batteries are in series and the voltage adds).
Resistance = 3 ohms
I = V / R
I = 12/3
I = 4 amperes.
None of the answers are the right ones. If there is a fifth one that reads 4 amperes then it is the correct answer.
Define thermal conductivity.
Answer:
A measure of the ability of a material to transfer heat.
Explanation:
Please mark me as brainliest please
Please help me, it’s due tonight and I’m very confused!! THANK YOU
Explanation:
If your reaction time is 1 second, then the new reaction time for each is:
Alcohol: 0.30 × 1 + 1 = 1.30
Drugs: 0.50 × 1 + 1 = 1.50
Cell phone: 0.20 × 1 + 1 = 1.20
A 5 kg object is dropped from the top of a 40 m tall building. What is its initial potential energy? What is its velocity the instant it hits the ground? What is its velocity after it has fallen 25 m?
Answer:
GPE = mgh = 5.00 kg .
2.20 + 0.30 m = 122.5 J
Explanation:
Would the phases of the moon be affected if the moon did not make one rotation for each revolution of earth. Explain .
Answer:
No. If the moon did not rotate at all we would still see the same visible "fraction" of the moon's surface.
At the full moon phase we would still the entire surface of 1/2 of the moon regardless of which side of the moon we were observing.
Actually the moon does not make one rotation for each revolution of the earth, but rather, one rotation for each complete revolution of the moon around the the earth. That's why we always see the same side of the moon from earth. The back side of the moon is never visible from earth.
a car of mass 500 kg is moving with an instantaneous speed of 80.0 km/h. what is its kinetic energy
Answer:7.5. 10^4 J
Explanation:
Answer:
The Kinetic Energy of the car at that instant will be 123,210 Joules.
Explanation:
Given:
Mass=500 Kg
[tex]Speed= 80 km/h=\frac{80*1000}{3600}\ m/s =22.2 m/s[/tex]
Required:
Kinetic energy (K.E)=?
Formula:
[tex]K.E=\frac{1}{2}mv^{2}[/tex]
Where:
m is the mass.
v is the speed.
Solution:
[tex]K.E=\frac{1}{2}mv^{2}\\K.E=\frac{1}{2} *500* (22.2)^{2} \\K.E=123,210 J[/tex]
The Kinetic Energy of the car at that instant will be 123,210 Joules.
You take a couple of capacitors and connect them in series, to which you observe a total capacitance of 4.8microfarads. However, when you connect them in parallel their combined capacitance is 35microfarads. Determine the value of each capacitor.
Answer:
C₁ = 34.8 μF
C₂ = 0.2 μF
Explanation:
When the capacitors are connected in series their resultant capacitance is given by the formula:
Cs = 1/C₁ + 1/C₂
where,
Cs = Series equivalent capacitance = 4.8 μF
C₁ = Capacitance of 1st Capacitor
C₂ = Capacitance of 2nd Capacitor
Therefore,
4.8 μF = 1/C₁ + 1/C₂
(4.8 μF)(C₁ C₂) = C₁ + C₂ --------------- equation 1
When the capacitors are connected in parallel their resultant capacitance is given by the formula:
Cp = C₁ + C₂
where,
Cp = Parallel equivalent capacitance = 35 μF
Therefore,
35 μF = C₁ + C₂ -------------- equation 2
solving equation 1 and equation 2 simultaneously, we get:
C₁ = 34.8 μF
C₂ = 0.2 μF
The speed of sound in air changes with the temperature. When the temperature T is 32 degrees Fahrenheit, the speed S of sound is 1087.5 feet per second. For each degree increase in temperature, the speed of sound increases by 1.1 feet per second. (Round your answers to two decimal places.) (a) Explain why speed S is a linear function of temperature T. Because S always increases by 1.1 when T increases by 1 Correct: Your answer is correct. , S has a constant rate of change and is a linear function of T. Identify the slope of the function. 1.1 Correct: Your answer is correct. (b) Use a formula to express S as a linear function of T. S = Incorrect: Your answer is incorrect. (c) Solve for T in the equation from part (b) to obtain a formula for temperature T as a linear function of speed S. T = (d) Explain in practical terms the meaning of the slope of the function you found in part (c). The slope of T as a linear function of S is , and this means that an increase in the speed of sound by 1 foot per second corresponds to an increase of degree in temperature.
Answer and Explanation:
A. We have temperature t = 32
Speed of sound, s = 1087.5
As t increases by 1⁰f speed increases by 1.2
So that
S = 1088.6
T= 33⁰f
We have 2 equations
1087.5 = k(32) + c
1088.6 = k(33) + c
Subtracting both equations
(33-32)k = 1088.6-1087.5
K = 1.1
b.). S = kT + c
1087.5 = 32(1.1) + c
Such that
C = 1052.3
Therefore
S = 1.1(t) + 1052.3
C.). S = 1.1t + 1052.3
We make t subject of the formula
T = s/1.1 - 1052.3/1.1
T = 0.90(s) - 956.3
D. This means that We have temperature to rise by 0.90 whenever speed is increased
Two cars A and B with velocity 280m/s and 80m/s respectively, Car B
leaves point X 6:00am and car A also leaves the same point 6:40am
calculate the distance between the two cars after [I] 1hr [ii] where do you
think car A will overtake car B
Car B travels a distance x after time t (measured in seconds) of
x = (80 m/s) t
so that at 6:40 AM (which is 40 min = 2400 s after the starting time of 6:00 AM), it will have moved
(80 m/s) * (2400 s) = 192,000 m
If we take t = 0 to refer to 6:40 AM, the cars' respective positions x at time t are given by
A: x = (280 m/s) t
B: x = 192,000 m + (80 m/s) t
(i) After 1 h = 3600 s, their positions are
A: (280 m/s) * (3600 s) = 1,008,000 m
B: 192,000 m + (80 m/s) * (3600 s) = 480,000 m
away from the point X, so the distance between the two cars is
1,008,000 m - 480,000 m = 528,000 m = 582 km
(ii) Car A moves faster than car B, so A overtakes B as soon as their positions are equal, which happens for
(280 m/s) t = 192,000 m + (80 m/s) t
(200 m/s) t = 192,000 m
t = (192,000 m) / (200 m/s)
t = 960 s = 16 min
So after 16 min, both cars have a position of
(280 m/s) * (960 s) = 268,800 m = 268.8 km
beyond point X.
Please help me with this and if I have good answer u will be marked as brilliant !!!!
Help ASAP). Describe the Net Force lab and explain what the lab demonstrated? Will Mark Brainliest. Working on it now can someone please help
Answer:
In the statement of Newton's first law, the unbalanced force refers to that force that does not become completely balanced (or canceled) by the other individual forces. If either all the vertical forces (up and down) do not cancel each other and/or all horizontal forces do not cancel each other, then an unbalanced force exists. The existence of an unbalanced force for a given situation can be quickly realized by looking at the free-body diagram for that situation. Free-body diagrams for three situations are shown below. Note that the actual magnitudes of the individual forces are indicated on the diagram.
In each of the above situations, there is an unbalanced force. It is commonly said that in each situation there is a net force acting upon the object. The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out. At this point, the rules for summing vectors (such as force vectors) will be kept relatively simple. Observe the following examples of summing two forces:
Observe in the diagram above that a downward vector will provide a partial or full cancellation of an upward vector. And a leftward vector will provide a partial or full cancellation of a rightward vector. The addition of force vectors can be done in the same manner in order to determine the net force (i.e., the vector sum of all the individual forces). Consider the three situations below in which the net force is determined by summing the individual force vectors that are acting upon the objects.
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the Empire State Building. Before the state legislature votes on funding for the project, they would like you to prepare a report on the benefits of upgrading the elevators. One of the numbers that they have requested is the time it will take the elevator to go from the ground floor to the 102nd floor observatory. They are unlikely to approve the project unless the new elevators make the trip much faster than the old elevators. If state law mandates that elevators cannot accelerate more than 2.10 m/s2 or travel faster than 10.3 m/s , what is the minimum time in which an elevator can travel the 373 m from the ground floor to the observatory floor
Answer:
The value is [tex]t_t =41.12 \ s [/tex]
Explanation:
From the question we are told that
The maximum acceleration is [tex]a_m = 2.10 \ m/s^2[/tex]
The maximum velocity is [tex]v_m = 10.3 \ m/s[/tex]
The height of the observatory floor is [tex]H = 373 \ m[/tex]
Generally at the initial state of the motion the elevator accelerates from rest with a maximum acceleration [tex]a_m = 2.10 \ m/s^2[/tex] to attain a maximum velocity [tex]a_m = 2.10 \ m/s^2[/tex] at a time period of [tex]t_a[/tex]
Then it continues with the maximum velocity for a time period of [tex]t_b[/tex]
and finally decelerates with a maximum deceleration [tex] a_m = -2.10 \ m/s^2[/tex] to come to rest at a time period of [tex]t_c[/tex]
Generally the velocity of the elevator for the first part of the motion is
[tex]v = u + at_a[/tex]
given that it started from rest u = 0 m/s
=> [tex]10.3 = 2.10t_a[/tex]
=> [tex]t_a = 4.90 \ s [/tex]
Generally from kinematic equations the distance covered during the first part of the motion is
[tex]S_1 = ut_a + \frac{1}{2} at_a^2[/tex]
=> [tex]S_1 = 0 + \frac{1}{2} (2.10 ) (4.90)^2[/tex]
=> [tex]S_1 = 25.21 \ m [/tex]
Generally the distance covered during the second part of the elevators motion is mathematically represented as
[tex]S_2 = v_m * t_2[/tex]
[tex]S_2 = 10.3 t_b[/tex]
Generally given that the first part of the elevator motion is similar to the third part of the elevator motion it implies that the distance covered is similar
i.e [tex]S_1 = S_3 = 25.21 \ m[/tex]
The total distance covered is mathematically repented as
[tex]H = S_1 + S_2 + S_3[/tex]
=> [tex]373 = 25.21 + 10.3 t_b + 25.21 [/tex]
=> [tex]t_2 = 31.32 \ s [/tex]
Generally the minimum total time taken is
[tex]t_t = t_a + t_b + t_c[/tex]
Generally [tex]t_a = t_c = 4.90 \ s[/tex]
So
[tex]t_t =4.90+ 31.32 +4.90[/tex]
=> [tex]t_t =41.12 \ s [/tex]
A computer model is a very complex type of _______________ model.
Answer:
mathematical model
Explanation:
A computer model is a very complex type of mathematical model.
These complex mathematical models involves series of equations or algorithms known as set of instructions for the computer to perform difficult computations. These mathematical models include dynamical systems, statistical models, or differential equations.
Can someone explain what would happen if you changed something in the past or in the future then time traveled right back to the present day how it would affect the present day.
Answer:
it would affect the present day because you changed what happened so what is happening in present time would be different. think about it this way, our lives right now and what is happening right now is all based on what has happened in the past. If something else were to happen in the past our lives right now would be different.
Answer:
it would affect the present day because you changed what happened so what is happening in present time would be different.
Explanation:
The slope of a displacement position) vs time graph is a measurement called ____?
a) distance
b ) velocity
c ) speed
d) correlation
Answer:
velocity
Explanation:
velocity = displacement/ time
A body moving in the positive x direction passes the origin at time t=0 . Between t=0 and t=1 second , the body has a constant speed of 24 metres per second . At t=1 second , the body is given a constant acceleration of 6 metres per second squared in the negative x direction . The position at t=11 seconds is?
Answer:
The position at t=11 seconds is -96 m or 96 m to the left of the origin
Explanation:
Constant speed and constant acceleration motion
If a body travels the same distance per unit of time, the body has a constant speed. The equation for the distance x is:
[tex]x=v.t[/tex]
Where v is the constant speed and t is the time.
At time t=0 the body is moving at a constant speed of v=24 m/s in the positive x-direction. It keeps that condition for t=1 sec. The distance traveled is:
[tex]x=24m/s\cdot 1\ s=24\ m[/tex]
Now the body is given a constant acceleration of 6 m/s^2 in the negative x-direction, that is, a=-6 m/s^2
The distance traveled by a body at constant acceleration is given by:
[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}[/tex]
Where vo is the initial speed and t is the time.
We need to find the position at t=11 sec, but we must subtract the one second already passed, thus t=10 s
[tex]\displaystyle x=24m/s\cdot 10s+\frac{-6m/s^2.(10)^2}{2}[/tex]
[tex]\displaystyle x=240\ m-360\ m=-120\ m[/tex]
This distance must be added to the actual position of the body, that is:
-120 m + 24 m = -96 m
The position at t=11 seconds is -96 m or 96 m to the left of the origin
Gravity is affected by (2 points)
force only
force and distance
mass and distance
force and mass
Answer:
Mass and distance
Explanation:
Answer:
Mass and distance
Explanation:
the larger the mass the faster it falls or more gravity is applied same goes for the distance the farther it is from the ground its heavier however if its to far gravity then does not apply
hope this helps :)
can have brainlist please
Unimpressed with your previous stunt, the director of the new James
Bond movie has come to you with a more exciting idea. In this stunt,
Bond will run towards a bridge that is 18m above a river. His partner
is in a speedboat 60 meters away from the bridge. Bond jumps
horizontally off the bridge with a speed of 6.7 m/s toward where
his partner is waiting. Starting from rest, his partner begins racing
toward the bridge the moment Bond jumps. What is the minimum
acceleration his partner will need in order to catch Bond before he
hits the water?
Answer:
The minimum acceleration his partner will need in order to catch Bond before he hits the water is 25.688 meters per square second.
Explanation:
Let be the initial position of the sppedboat the reference location, James Bond jumps horizontally and experiments a parabolic motion, which consists in a horizontal motion at constant velocity and an vertical uniform accelerated motion due to gravity.
Speedboat must accelerate from rest and get Bond at right location and instant. Now we describe the appropriate equations of motion for James Bond and for the speedboat:
James Bond
[tex]x_{B} = x_{B,o} + v_{B,o,x} \cdot t[/tex]
[tex]y_{B} = y_{B,o} + v_{B, o, y}\cdot t + \frac{1}{2}\cdot g \cdot t^{2}[/tex]
Speedboat
[tex]x_{S} = x_{S,o}+v_{S,o}\cdot t + \frac{1}{2}\cdot a_{S}\cdot t^{2}[/tex]
Where:
[tex]x_{B,o}[/tex], [tex]x_{S,o}[/tex] - Initial horizontal positions for James Bond and the speedboat, measured in meters.
[tex]x_{B}[/tex], [tex]x_{S}[/tex] - Current horizontal positions for James Bond and the speedboat, measured in meters.
[tex]v_{B,o,x}[/tex], [tex]v_{S,o}[/tex] - Initial horizontal velocities of James Bond and the speedboat, measured in meters per second.
[tex]v_{B,o, y}[/tex] - Initial vertical velocity of James Bond, measured in meters per second.
[tex]t[/tex] - Time, measured in seconds.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.
[tex]a_{S}[/tex] - Acceleration of the speedboat, measured in meters per square second.
We must observe the following conditions such as we may calculate the minimum acceleration of the speedboat:
1) [tex]x_{B} = x_{S}[/tex]
2) [tex]y_{B} = 0\,m[/tex]
Now, if we know that [tex]x_{B,o} = 60\,m[/tex], [tex]x_{S,o} = 0\,m[/tex], [tex]y_{B, o} = 18\,m[/tex], [tex]y_{B} = 0\,m[/tex], [tex]v_{B,o, x} = -6.7\,\frac{m}{s}[/tex], [tex]v_{S,o} = 0\,\frac{m}{s}[/tex], [tex]v_{B,o,y} = 0\,\frac{m}{s}[/tex] and [tex]g = -9.807\,\frac{m}{s^{2}}[/tex], the resulting system of equations is:
[tex]60\,m +\left(-6.7\,\frac{m}{s} \right)\cdot t = 0\,m +\left(0\,\frac{m}{s} \right)\cdot t +\frac{1}{2}\cdot a_{S}\cdot t^{2}[/tex]
[tex]\frac{1}{2}\cdot a_{S}\cdot t^{2} +\left(6.7\,\frac{m}{s} \right)\cdot t -60\,m = 0[/tex] (Eq. 1)
[tex]0\,m = 18\,m +\left(0\,\frac{m}{s} \right)\cdot t +\frac{1}{2}\cdot \left(-9.807\,\frac{m}{s^{2}} \right) \cdot t^{2}[/tex]
[tex]\frac{1}{2}\cdot \left(-9.807\,\frac{m}{s^{2}} \right) \cdot t^{2}+18\,m = 0[/tex] (Eq. 2)
At first we get the time from (Eq. 2) by using the Quadratic Formula:
[tex]t_{1} \approx 1.916\,s[/tex] and [tex]t_{2}\approx -1.916\,s[/tex]
Only the first root is physically reasonable. ([tex]t\approx 1.916\,s[/tex])
Then, we substitute time in (Eq. 1) and clear the acceleration of the speedboat:
[tex]\frac{1}{2}\cdot a_{S}\cdot (1.916\,s)^{2} +\left(6.7\,\frac{m}{s} \right)\cdot (1.916\,s) -60\,m = 0[/tex]
[tex]1.836\cdot a_{S}-47.163\,m = 0[/tex]
[tex]a_{S} = 25.688\,\frac{m}{s^{2}}[/tex]
The minimum acceleration his partner will need in order to catch Bond before he hits the water is 25.688 meters per square second.
Convert 0.0000004372896 to scientific notation.
O 4.372896 x 10^7
O 4.372896 x 10^-7
O 0.437 x 10^-7
O 4.37 x 10^7
Answer:
Based on the scientific notation ,
4.372896 x10^-7 is the answer.
Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations. In what way do laboratory experiments primarily differ from other forms of scientific investigations?
A.
A laboratory experiment is the only accepted form of investigation within the scientific community.
B.
Studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.
C.
Data can only be generated through laboratory experiments, not other forms of investigation.
D.
Laboratory experiments involve the identification and control of variables.
Answer:D:
Laboratory experiments involve the identification and control of variables.
Explanation:
Its D
Laboraty Expirements inolve the Identification and control of variables
a 5.5kg box us pushed across the lunch table. the net force applied to the box is 9.7n. what is the acceleration of the box?
Answer:
1.76 m/s^2
Explanation:
The formula to find the force is F = ma (reference from 2nd law of Newton's Laws of Motion). Since you need to find the acceleration of the box, you need to use the formula a = f/m
a = 9.7 n divided by 5.5 kg = 1.76 m/s^2
The table shows the commonly eaten foods of some groups of organisms.
Commonly Eaten Foods List
Group Commonly Eaten Foods
A squids, crabs, lobsters
B branches, barks, twigs, roots
C insects, leaves, nuts, bird eggs
D vegetables, fish, grains, fruits
Which groups contain both primary and secondary consumers
HELP ASAP
Answer:
c and d
Explanation:
I got your back bro ;)
Answer:
C and D
Explanation:
A.) If its booster rockets accelerate the space shuttle at 15m/s2, how high will it be one minute after launch?
B.) What was its average velocity
during that time?
Answer:
27,000 m
450 m/s
Explanation:
Assuming the initial velocity is 0 m/s:
v₀ = 0 m/s
a = 15 m/s²
t = 60 s
A) Find: Δy
Δy = v₀ t + ½ at²
Δy = (0 m/s) (60 s) + ½ (15 m/s²) (60 s)²
Δy = 27,000 m
B) Find: v_avg
v_avg = Δy / t
v_avg = 27,000 m / 60 s
v_avg = 450 m/s
Which of the following is true about conduction? Question 2 options: It is heat transfer through direct contact It can only occur in a liquid It is heat transfer in currents through a liquid It is heat transfer as a form of light
Answer:
through direct contact
Explanation:
took the test!
. Common household appliances are rated at 110 V, but power companies deliver voltage in the kilovolt range and then step the voltage down using transformers to 110 V to be used in homes. You will learn in later chapters that transformers consist of many turns of wire, which warm up as current flows through them, wasting some of the energy that is given off as heat. This sounds inefficient. Why do the power companies transport electric power using this method
Answer: High voltage transmission minimizes energy losses during electricity transmission.
Explanation:
When electricity is to be transmitted over a long distance, high voltage transmission is preferred to minimize energy losses due to heat.
The higher the transmission voltage, the lower the current and the lesser the resitance in the wire and the lesser the energy lost due to heat during transmission.
High voltage transmission in kilowatts enables light weight cables to be used for long distance electricity transmission.
This explains why, even though only 110 V may be required at home by some appliances, but electricity is transmitted in kilovolts and often require a stepdown transformer
If a set of scores has a mean of 100.00 and
a standard deviation of 5.00, what is the
variance of the standard scores?
Answer:
Variance is 25
Explanation:
Recall that the standard deviation is defined as the square root of the variance. therefore, if you know the standard deviation [tex](\sigma)[/tex], square it and you get the variance:
[tex]Variance= \sigma^2\\Variance= 5^2= 25[/tex]
Since illness can be caused by bacteria that live in water, pollution in water can lead to serious illness. true or false
Answer:
true, there are certain forms of bacteria in water that can cause permanent brain damage (although its rare) so further contamination of water can lead to higher chances of contracting serious illnesses caused by such bacteria.
