Please help!


How did Jessica Kusher create her new material?

Answers

Answer 1

Jessica Kusher created a new material by b. mixing graphite, gypsum, and mica that could be painted on roof shingles.

This innovative formula aims to address two significant issues: reducing a home's cooling costs and potentially lowering ozone pollution in urban areas.

The material is notable for its environmentally friendly impact, focusing on making buildings more energy-efficient by reflecting more sunlight and thus reducing the amount of heat absorbed by the roofs.

This reduction in heat absorption could lead to a decrease in the energy required to cool buildings. The creation of this new material involved experimenting with different components to enhance its efficiency and effectiveness.

Full question:

How did Jessica Kusher create her new material?

a. harvesting rare minerals from deep-sea vents and combining them with organic polymers.

b. mixing graphite, gypsum, and mica that could be painted on roof shingles.

c. genetically engineering bacteria to produce a biodegradable substitute for plastic.

d. extracting nanoparticles from recycled plastic bottles and incorporating them into a concrete mixture for enhanced durability.


Related Questions

A student took a calibrated 200.0 gram mass, weighed it on a laboratory balance, and found it read 186.5 g. What was the student’s percent error?

Answers

Final answer:

The calculated percent error for the student who weighed a 200.0 g mass as 186.5 g is -6.75%, indicating that the measured value was lower than the actual value.

Explanation:

The student's percent error is calculated using the formula [(observed value - true value) / true value] * 100. In this case, the observed value is the value measured by the student, which is 186.5 g. The true value is the actual weight of the object, which is 200.0 g. By substituting these values into the formula, we get percent error = [(186.5 g - 200.0 g) / 200.0 g] * 100, resulting in a percent error of -6.75%. This negative value indicates that the measured value is lower than the actual value.

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A local Dunkin' Donuts shop reported that its sales have increased exactly 20% per year for the last 2 years. This year's sales
were $80,468. What were Dunkin' Donuts' sales 2 years ago? (Round each year's sales to the nearest dollar.)

Answers

Answer:

$55,881

Explanation:

A = P (1 + r)^t

where A is the final amount,

P is the initial amount,

r is the rate,

and t is time.

Given: A = 80468, r = 0.20, and t = 2.

80468 = P (1.20)^2

P ≈ 55881

The sales 2 years ago was approximately $55,881.

Dunkin' Donuts' sales 2 years ago were $55,881.

A = P (1 + r)^t

where A is the final amount, P is the initial amount, r is the rate, and t is time.

A = 80468, r = 0.20, and t = 2.

80468 = P (1.20)^2

P ≈ 55881

The sales 2 years ago were approximately $55,881.

What is a sale?

Sales are activities related to selling or the style of products sold in a given focused term. The shipping of a provider for a rate is likewise considered all through a sale.

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How are NGC 1427A and U different? How are they the same?

Answers

Answer:   NGC 1427A has no general shape, so it is an irregular galaxy. U has a bulge in the center and arms, so it is a spiral galaxy. They are similar in that both contain plenty of dust and gas. Both also have active star-forming sites.

Answer:

NGC 1427A has no specific shape, so it's an irregular galaxy. U has a spiral like shape so it's a spiral galaxy. They're similar because they both contain plenty of dust and gas. Both also have an active star-forming sites.

Explanation:

Put this as my answer and got it right

The graph is the path Beth took on a walk.

A graph with horizontal axis time (seconds) and vertical axis position in (meters). The line runs in 2 straight segments from 0 seconds 2 meters to 6 seconds 8 meters to 10 seconds 0 meters.
What does the line from time 6 to 10 indicate?

Beth slowed down considerably.
Beth went back toward her origin.
Beth sped up considerably.
Beth went farther away from origin.h expression is equivalent to

Answers

Answer:

Beth went back toward her origin

Explanation:

Please, see the attached image that represent's Beth's path.

She started her walk 2 meters from the origin (0) and after 6 seconds she headed back to position zero (0) the origin. Notice the second half of the graph as a segment going down, thus reducing her distance from the origin, and getting closer to it.

Answer:

Beth went back toward her origin.

Beth speed up considerably.

Explanation:

speed of the object is defined as the slope of the position time graph

here we know that

initially it moves from t = 0 to t = 6 from x = 2 to x = 8

so the slope is given as

[tex]v = \frac{x_2 - x_1}{t_2 - t_1}[/tex]

[tex]v = \frac{8 - 2}{6 - 0}[/tex]

[tex]v = 1 m/s[/tex]

similarly for next we have

again it comes to x = 0 after t = 10 s

so the speed is

[tex]v_2 = \frac{x_3 - x_2}{t_3 - t_2}[/tex]

[tex]v_2 = \frac{0 - 8}{10 - 6}[/tex]

[tex]v_2 = -2 m/s[/tex]

so here the velocity is negative which shows that it will move in reverse direction also its velocity is also increase

so correct answers are

Beth went back toward her origin.

Beth speed up considerably.

What’s a Scientific law

Answers

Answer: scientific laws or the laws of science are statements that describe or predict a range of natural phenomena

Explanation:

What is a stock that reinvests its earnings in the business instead of paying regular dividends called?a growth stock , a preferred stock, an income stock, a common stock

Answers

Answer:

Growths stock

Explanation:

Gradpoint verified

You measure the voltage difference of a circuit to be 15 Volts and the resistance to be 675 Ohms.
What is the current in the circuit? (Show the appropriate equation and show your work with units)

Answers

Answer:

0.0222 A

Explanation:

V = I*R

[tex]15v = 675ohms \times i \\ i = \frac{15v}{675ohms} = 0.0222 a [/tex]

Using Ohm's law, which is I = V/R, the current I is calculated by dividing the voltage V (15V) by the resistance R (675Ω), resulting in a current of 22.2 milliamps.

The student is asking how to calculate the current in a circuit when given the voltage and resistance. To find the current (I), we use Ohm's law, which is represented by the equation I = V/R, where I is the current in amperes (A), V is the potential difference in volts (V), and R is the resistance in ohms (
). To solve the student's problem:

Voltage (V) = 15 Volts
Resistance (R) = 675 Ohms

Plugging these values into Ohm's law:

I = V/R
I = 15V / 675 Ω
I = 0.0222 A or 22.2 mA (Milliamps)

Therefore, the current in the circuit is 22.2 milliamps.

When you ride a roller coaster that makes sharp turns ,you feel yourself being pushed to one side . Use Newton’s first law of motion to explain this phenomenon

Answers

Explanation:

Newton's first law says that an object in motion stays in motion, and an object at rest stays at rest, until acted upon by an unbalanced force.

When a roller coaster makes a sharp turn, your body continues going straight until the seat belt pushes you and changes your direction.  If the roller coaster didn't have seat belts, you'd slide off and continue moving straight.

Which of these is important to gathering and interpreting scientific information?
A. Emotion
B. Legend
C. Religion
D. Logic

Answers

Answer:

D.) Logic

Explanation:

Definition:

the reasoning conducted or assessed according to strict principles of validity.

Hope this helps you out ; D

D. Logic.

Scientific information has been the consequence of scientific method, which is based on reason and observation. Hence, the gathering and interpretation of information in a scientific must be based on logic and reasoning, which are based on rules of inference, on what it is observed.

We conclude that correct choice is D.

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Two exactly similar wire of steel and copper are stretched by equal force.if the total elongation is 10cm.find how much each wire is elongated given young's modules for steel =2×10^10 N/M^2 and Young's modules for copper 2×10^10N/M^2.​

Answers

Answer:

The copper wire stretches 6.25 cm and the steel wire stretches 3.75 cm.

Explanation:

Young's modulus is defined as:

E = stress / strain

E = (F / A) / (dL / L)

E = (F L) / (A dL)

Solving for dL:

dL = (F L) / (A E)

The wires have the same force, length, and cross-sectional area.  So:

dL₁ + dL₂ = (FL/A) (1/E₁ + 1/E₂)

Given that dL₁ + dL₂ = 0.10 m, E₁ = 20×10¹⁰ N/m², and E₂ = 12×10¹⁰ N/m²:

0.10 = (FL/A) (1/(20×10¹⁰) + 1/(12×10¹⁰))

FL/A = 0.75×10¹⁰ N/m

Solving for dL₁ and dL₂:

dL₁ = (FL/A) / E₁

dL₁ = (0.75×10¹⁰ N/m) / (20×10¹⁰ N/m²)

dL₁ = 0.0375 m

dL₂ = (FL/A) / E₂

dL₂ = (0.75×10¹⁰ N/m) / (12×10¹⁰ N/m²)

dL₂ = 0.0625 m

The copper wire stretches 6.25 cm and the steel wire stretches 3.75 cm.

Which event happens when a star is forming

Answers

stars are made when atoms of light elements are compress under enough force for their nuclei to undergo fusion.

U. A hockey player takes a slap shot at a puck at rest on
the ice. The puck glides over the ice for 10 ft without
friction, at which point it runs over rough ice. The
puck then accelerates opposite its motion at a uniform
rate of - 20 ft/s2. If the velocity of the puck is 40 ft/s
after traveling 100 ft from the point of impact,
(a) what is the average acceleration imparted to the
puck as it is struck by the hockey stick? (Assume that
the time of contact is 0.01 s.) (b) How far in all does
the puck travel before coming to rest? (c) What is the total time the puck is in motion, neglecting contact time?

Answers

Answer:

a) 7200 ft/s²

b) 140 ft

c) 3.7 s

Explanation:

(a) Average acceleration is the change in velocity over change in time.

a_avg = Δv / Δt

We need to find what velocity the puck reached after it was hit by the hockey player.

We know it reached 40 ft/s after traveling 90 feet over rough ice at an acceleration of -20 ft/s².  Therefore:

v² = v₀² + 2a(x − x₀)

(40 ft/s)² = v₀² + 2(-20 ft/s²)(100 ft − 10 ft)

v₀² = 5200 ft²/s²

v₀ = 20√13 ft/s

So the average acceleration impacted to the puck as it is struck is:

a_avg = (20√13 ft/s − 0 ft/s) / (0.01 s)

a_avg = 2000√13 ft/s²

a_avg ≈ 7200 ft/s²

(b) The distance the puck travels before stopping is:

v² = v₀² + 2a(x − x₀)

(0 ft/s)² = (5200 ft²/s²) + 2(-20 ft/s²)(x − 10 ft)

x = 140 ft

(c) The time the puck takes to travel 10 ft without friction is:

t = (10 ft) / (20√13 ft/s)

t = (√13)/26 s

The time the puck travels over the rough ice is:

v = at + v₀

(0 ft/s) = (-20 ft/s²) t + (20√13 ft/s)

t = √13 s

So the total time is:

t = (√13)/26 s + √13 s

t = (27√13)/26 s

t ≈ 3.7 s

The average acceleration or the total time will be:

(a) 7200 ft/s²(b) 140 ft(c) 3.7 s

According to the question,

Velocity,

[tex]v^2 = 40 \ ft/s[/tex]

Acceleration,

[tex]a = -20 \ ft/s^2[/tex]

(a)

As we know,

→     [tex]v^2=v_0^2+2a(x-x_0)[/tex]

By substituting the values, we get

→ [tex](40)^2=v_0^2+2(-20)(100-10)[/tex]

→     [tex]v_0^2=5200 \ ft^2/s^2[/tex]

→          [tex]= 20\sqrt{13} \ ft/s[/tex]

Now,

The average acceleration will be:

→ [tex]a_{avg} = \frac{\Delta v}{\Delta t}[/tex]

→         [tex]= \frac{20\sqrt{13}-0 }{0.01}[/tex]

→         [tex]= 2000\sqrt{13} \ ft/s^2[/tex]

→         [tex]= 7200 \ ft/s^2[/tex]

(b)

The distance will be:

→   [tex]v^2=v_0^2+2a(x-x_0)[/tex]

→ [tex](0)^2= 5200+2(-20)(x-10)[/tex]

→     [tex]0= 5200-40(x-10)[/tex]

→     [tex]x = 140 \ ft[/tex]

(c)

The time taken to travel 10 ft will be:

→ [tex]t = \frac{10}{20\sqrt{3} }[/tex]

     [tex]= \frac{\sqrt{13} }{26} \ s[/tex]

The time taken over rough ice will be:

→ [tex]v = at+v_0[/tex]

  [tex]0=-20t+20\sqrt{13}[/tex]

[tex]20t = 20\sqrt{13}[/tex]

   [tex]t = \sqrt{13} \ s[/tex]

hence,

The total time taken will be:

→ [tex]t = \frac{\sqrt{13} }{26} +\sqrt{13}[/tex]

     [tex]= \frac{27\sqrt{13} }{26}[/tex]

     [tex]= 3.7 \ s[/tex]

Thus the above answers are correct.    

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(V2 – V.), what do
6 Label In the equation a =
V, and v, represent?

Answers

Final answer:

In physics, specifically in thermodynamics and fluid dynamics, 'V' typically represents volume, which can be molar or specific volume depending on the context. The constant 'a' in the van der Waals equation accounts for intermolecular attraction, and its units vary with the type of volume 'V' used. These parameters are essential in equations of state to describe real gas behavior.

Explanation:

In the context of physics, particularly in the study of thermodynamics and fluid dynamics, V often represents volume or specific volume. Considering the various equations and contexts provided, V can refer to molar volume or specific volume depending on the equation used. The volume variable is significant in equations of state, such as the ideal gas law and the van der Waals equation.

In the van der Waals equation, expressed as (P+a/V²) (V − b) = RT, 'a' represents the measure of attraction between particles within a gas, and 'b' accounts for the finite volume of gas particles, which is subtracted from the total volume V. Here, a essentially corrects for the intermolecular forces, and its units will vary depending on whether the volume V is specific or molar.

When seeking relationships between changing variables such as pressure (p) and volume V, constants a and b play crucial roles. These constants are parameters in the equation that relate pressure to volume, allowing for adaptations from ideal gas behaviors to more real-life scenarios where gases exhibit non-ideal characteristics.

What is the acceleration of a softball if it has a mass of 0.50kg and hits the catchers glove with a force of 25N

Answers

Answer:

50 m/s²

Explanation:

From Newton's second law:

F = ma

25 N = (0.50 kg) a

a = 50 m/s²

Final answer:

The acceleration of a softball with a mass of 0.50kg and a force applied of 25N can be found by using Newton's second law of motion (F=ma). Upon rearranging the equation to solve for acceleration (a) and substituting the given values, we find that the acceleration is 50 m/s².

Explanation:

To find the acceleration of the softball, we use Newton's Second Law of Motion, which states that the acceleration of an object is dependent upon the net force acting upon the object and the mass of the object, represented by the formula F = ma, where F is force, m is mass, and a is acceleration.

In this case, the force (F) applied on the softball is 25N and the mass (m) of the softball is 0.50kg. Rearranging the equation of Newton's second law to solve for acceleration (a), we get a = F/m.

Substituting the given values, we have a = 25N / 0.50kg. Solving the equation yields an acceleration (a) of 50 m/s².  

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9. Which of the following statements is true about scientific theories? (1 point)

Answers

Answer: D

Explanation:

We can immediately cross out A because theories and laws are completely different

We can then cross out B because laws have to go through many trials to prove them

C is wrong because laws and hypothesis are completely different

So that leaves us with D. Hope this helps!

Answer:

Scientific theories summarize patterns found in nature.

Explanation:

A scientific theory is an explanation of certain observed patterns. Scientific theories can be constantly improved, depending on the new phenomena observed that are studied through experiments that follow the scientific method. Therefore, a scientific theory allows to acquire an increasingly accurate knowledge about the mechanisms responsible for the patterns observed in nature.

What do artists and scientists have in common?

Creative thinking processes
Clean laboratory environments
Knowledge of computers
Lack of imagination

FYI this is for science class!!!!!!!!!!!!!!!

Answers

Answer: Creative Thinking process.

Explanation:

Artists process imagination.

Artists don’t use labs.

Scientists and artists have a different type of computer knowledge (artists having graphic design knowledge and scientists knowing more about data.)

Answer:

creative thinking process

If a wave has a period of 0.077 sec, it has a frequency of?

Answers

mathematically,

[tex]frequency = \frac{1}{t} [/tex]

where t = time

from the question, t= 0.077sec

substitute it in the formula

[tex]frequency = \frac{1}{0.077} [/tex]

[tex]frequency = 12.987 {s}^{ - 1} [/tex]

approximately 13s^-1

If a wave has a period of 0.077 sec, it has a frequency of 12.98.

What is the frequency?

The frequency of a repeated event is the number of occurrences per unit of time. It is separate from angular frequency and is sometimes referred to as temporal frequency. The frequency is expressed in hertz (Hz), which equals one occurrence per second.

An example is a human heart that can beat at up to 68 beats per minute.

The frequency is the number of times an observation is repeated between the upper and lower class bounds of that class. Cumulative Frequency is the sum of frequencies up to that class.

Frequency = 1 / t

where t = time

from the question, t = 0.077sec

substitute it in the formula

1 / 0.077 = 12.98

Therefore, the frequency of a wave whose period is 0.077 seconds is 12.98.

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002 10.0 points
A tennis ball with a speed of 10.1 m/s is
moving perpendicular to a wall. After striking
the wall, the ball rebounds in the opposite
direction with a speed of 8.3426 m/s.
If the ball is in contact with the wall for
0.00905 s, what is the average acceleration of
the ball while it is in contact with the wall?
Take “toward the wall” to be the positive
direction.
Answer in units of m/s2.
likel
and
1. ]
I don’t understand pleaseee help!

Answers

Answer:

-2040 m/s²

Explanation:

Taking toward the wall to be positive, the initial velocity is 10.1 m/s and the final velocity is -8.3426 m/s.

Average acceleration is the change in velocity over change in time.

a = Δv / Δt

a = (-8.3426 m/s − 10.1 m/s) / 0.00905 s

a = -2040 m/s²

The average acceleration of the ball while it is in contact with the wall is approximately −2034.39m/s².

The average acceleration of an object is defined as the change in velocity divided by the time interval during which the change occurs. In this case, the tennis ball hits the wall, changes its velocity, and rebounds. The change in velocity is the difference between its initial velocity and its final velocity after rebounding.

Given data:

Initial velocity (vi) = 10.1 m/s (moving toward the wall, positive direction)

Final velocity (vf ) = -8.3426 m/s (moving away from the wall, opposite direction)

Time interval (Δt) = 0.00905s

The change in velocity (Δv) is the difference between the final and initial velocities:

Δv=vf −vi

​Δv = − 8.3426 m/s −10.1m/s=−18.4426m/s

Now, you can calculate the average acceleration (a) using the formula:

a= Δv / Δt

a=  −18.4426m/s / 0.00905s

Calculating this:

a≈−2034.39m/s²

The negative sign indicates that the acceleration is directed toward the wall, which is what we expect since the ball is slowing down as it hits the wall.

So, the average acceleration of the ball while it is in contact with the wall is approximately −2034.39m/s².

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A car accelerates from 25ms to 40ms in 5 seconds. What is the average velocity?​

Answers

Answer:

32.5 m/s

Explanation:

Assuming the acceleration is uniform, the average velocity is simply the average of the initial and final velocities.

v_avg = (v₀ + v) / 2

v_avg = (25 + 40) / 2

v_avg = 32.5

According to Newton’s law of universal gravitation, which statements are true? As we move to higher altitudes, the force of gravity on us decreases. As we move to higher altitudes, the force of gravity on us increases. As we gain mass, the force of gravity on us decreases. As we gain mass, the force of gravity on us increases. As we move faster, the force of gravity on us increases.

Answers

According to Newton’s law of universal gravitation, as we move to higher altitudes, the force of gravity on us decreases and as we gain mass, the force of gravity on us increases both are the true statement.  

Explanation:  

Newton law of universal gravity extends gravity beyond the earth's surface. This gravity depends on the masses directly and inverse to the distance square between their centers.

                                         [tex]F=G \frac{M \times m}{r^{2}}[/tex]

Where,

F – Force, G – gravitational constant, M and m – masses in kg, r – distance in meters.

Since force is proportional to the masses of interacting objects. If the mass of any one object increases, gravity between them also gets increased. When moving to higher altitude, force decreases as the distance is inverse proportion to gravity.

1. How is 0.00069 written in scientific notation? (1 point).
O 69x10--
06.9x104
O 0.69x107
0692104​

Answers

Answer: [tex]6.9 (10)^{-4}[/tex]

Explanation:

When a number is written in scientific notation (representing the number using powers of base ten) it is expressed so that it contains a digit in the place of the units and all other digits after the decimal point, multiplied by the respective exponent.  

Then, the significant digits will be the digits that are before the power of ten.

In the case of [tex]0.00069[/tex]  we have to move the decimal point to the right and the power of base ten will be equal to the spaces moved to the right:

[tex]0.00069=6.9(10)^{-4}[/tex]

Electromagnetic force blank Than the gravitational force

Answers

Answer:

stronger

Explanation:

A magnet can pull up a metal object because it is stronger than the gravitational force of the entire planet.

the answer is : Stronger

a bullet ofmass 0.05kg has a speed of 400m/s.what is its kinetic energy? If it hits a wall of which the averageresistive force is 10000N, calculate the distance penetrated by the bullet​

Answers

Answer:

4000 J

0.4 m

Explanation:

Kinetic energy is one half the mass times the square of velocity:

KE = ½ mv²

Given m = 0.05 kg and v = 400 m/s:

KE = ½ (0.05 kg) (400 m/s)²

KE = 4000 J

Work = change in energy

W = ΔKE

Fd = KE

(10000 N) d = 4000 J

d = 0.4 m

Options: Amplitude, crest, trough, wavelength

Answers

B) amplitude A) crest C) Trough D) wavelength

Positions B and D are 11.3 meters and 1.9 meters above the playing field, respectively. If the ball had a speed of 6.2 m/s in position B, what is its speed in position D?

Answers

Answer:

Speed of the ball in position D [tex]=14.92 \frac{m}{s}[/tex]

Explanation:

Given:

Position of B=11.3[tex]\text { meters }[/tex]

Position of D=1.9[tex]\text { meters }[/tex]

Velocity of B=6.2[tex]\text { meters }[/tex]

To Find:

Velocity of D

Solution:

According to the formula, Velocity is given as

[tex]V d=\sqrt{\left[V b^{2}+(2 \times g \times d y)\right]}[/tex]

[tex]V b[/tex]=Velocity of B

[tex]V d[/tex]=Velocity of D

g=acceleration due to gravity=9.8 m/s^2  

[tex]d y[/tex]=Change in position of B and D

Substitute the all values in the above equation we get  

[tex]d y=11.3-1.9[/tex]

[tex]V d=\sqrt{\left[6.2^{2}+(2 \times 9.8 \times(11.3-1.9))\right]}[/tex]

[tex]=\sqrt{[38.44+(2 \times 9.8 \times(9.4))]}[/tex]

[tex]=\sqrt{[38.44+(19.6 \times 9.4)]}[/tex]

[tex]=\sqrt{38.44+186.24}[/tex]

[tex]=\sqrt{222.68}[/tex]

[tex]=14.92 \frac{m}{s}[/tex]

Result :

The velocity of D is [tex]=14.92 \frac{m}{s}[/tex]

City B is south of City A, and the 200 mile trip by car takes 4 hours. The cities are 120 miles apart in a straight line. What
is the velocity of a trip from City A to City B?
v=?
mph=?

Answers

Answer:

30 mph

Explanation:

Velocity is displacement over time.  Displacement is the straight line distance between the starting point and ending point.

v = x / t

v = 120 mi / 4 hr

v = 30 mph

The relationship among force, mass, and acceleration is stated in ___
A. The law of conversation of momentum
B. Newton's first law of motion
C. Newton's second law of motion
D. Newton's third law of motion

Answers

Final answer:

The relationship between force, mass, and acceleration is delineated in Newton's second law of motion. This rule, summarized as F = ma, implies that force equals mass times acceleration, and it describes how an object's velocity changes when an external force is applied.

Explanation:

The relationship among force, mass, and acceleration is stated in C. Newton's second law of motion. Newton's second law states that force equals mass times acceleration often expressed as F = ma. In this equation, F stands for force, m for mass, and a for acceleration. This law describes how the velocity of an object changes when it is subjected to an external force. For example, if you push a skateboard (imparting a force), it will accelerate depending on both the force of your push (how much you pushed) as well as the mass of the skateboard.

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2. Now imagine that the car is on a rectangular track that is 30 cm on each short side and 60 cm on each long
side. The car begins at the 0 cm position and takes one trip around the track.
a
What is the displacement of the car?
b.
What is the total distance that the car travels?

Answers

Answer:

distance is 180 displacement is 0

Explanation:

Displacement is the distance between one point to another directly in only one direction but distance is the distance traveled altogether in any direction.

Final answer:

The displacement of the car traveling around a rectangular track and returning to the starting point is zero, while the total distance traveled by the car is the sum of all sides of the rectangle, thus 180 cm.

Explanation:

In physics, displacement is defined as the shortest distance from the initial to the final position of a point. Therefore, if a car starts from a point on the track and makes a round trip back to the same point, the displacement of the car is zero.

Total distance traveled by the car, however, is the total length of the path covered by the car. The track is a rectangle with width 30 cm (short side) and length 60 cm (long side). Thus the total distance is calculated by adding up the lengths of all sides of the rectangle (2*30 cm + 2*60 cm) which equals 180 cm.

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The likelihood of developing heart disease is correlated with high rates of

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Final answer:

The development of heart disease is correlated with factors such as high cholesterol levels, obesity, and high blood pressure. Modifiable lifestyle choices, including diet and exercise, greatly influence cardiovascular health, while diabetes and family history also play significant roles.

Explanation:

The likelihood of developing heart disease is correlated with several factors. High cholesterol levels, particularly high amounts of "bad cholesterol", significantly increase the risk of cardiovascular diseases like coronary artery disease (CAD), where arteries narrow due to the buildup of plaques. Similarly, obesity, which involves having a very high percentage of body fat, especially around the abdomen, similarly elevates the risk for heart conditions.

Furthermore, high blood pressure makes the cardiovascular system work harder than normal, potentially leading to conditions like hypertension and contributing to heart disease. These are some of the modifiable factors affecting heart disease, in addition to lifestyle choices such as diet and exercise, which also play a crucial role in cardiovascular health.

It's important to note that preventing cardiovascular disease is possible by controlling these risk factors. Healthy lifestyle choices, such as quitting smoking, regular exercise, and a balanced diet, can lower a person's risk of developing heart disease. Additionally, being aware of the impact of diabetes and family medical history can help in managing and mitigating the risks associated with heart disease.

How is energy transformed from one form to another?

Answers

Energy changes from one form to another by interacting with objects in its environment that resist the influence of that energy.
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